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Dr. Chunjiang An
Department of Building, Civil and Environmental Engineering, Concordia University, Montreal H3G 1M8, QC, Canada

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Research Keywords & Expertise

0 Environmental Sustainability
0 Solid waste composting and digestion
0 Waste utilization and resource recovery
0 Advanced physiochemical and biological treatment
0 Contaminant transport in multiphase

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Surface water and groundwater quality
Environmental risk assessment and management
Waste utilization and resource recovery

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Journal article
Published: 17 August 2021 in Journal of Cleaner Production
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Due to the extensive application of sulfonamide antibiotics for disease control on humans and livestock, the discharge of their residuals has caused serious pollution to the water environment. To mitigate this pollution, various types of carbonaceous materials have been used as adsorbents to remove antibiotics from water. In this study, adsorption characteristics of three sulfonamide antibiotics on four carbonaceous materials under complex conditions have been explored in terms of the cycle of adsorption, desorption, and re-adsorption processes, single and interactive effects of multiple influencing factors, kinetics, isotherms, and thermodynamics. Adsorption isotherms of the main substance (sulfamethoxazole) in the co-adsorption system were also analyzed to illustrate the competitive effects of coexisting substances (sulfamerazine and sulfamethazine) and the degree of competition. Results showed that initial concentration, pH, and the interactions of them had significant effects on the adsorption process. The optimal combination of these factors was the initial concentration of 30 mg/L, pH value of 4.0, temperature below/beyond 298 K, and ionic strength of 0–0.1 mol/L. The adsorbed amount of SMX was the highest for four materials under the optimal condition (i.e., 91.51 mg/g for PAC, 258.7 mg/g for W-GAC, 184.7 mg/g for 3M-GAC, and 46.14 mg/g for GP). Adsorbents had great potentials to remove sulfonamide antibiotics after desorption, which is valuable for materials' reusability. In addition, the existence of competitive substances would not change main substance's exothermic or endothermic properties. These results could help reveal the adsorption, desorption, and re-adsorption mechanisms of various carbonaceous materials under complicated situations and provide reference to identify the regeneration conditions of adsorbents as well as determine the levels of influencing factors to remove sulfonamides antibiotics from water.

ACS Style

Bin Luo; Guohe Huang; Yao Yao; ChunJiang An; Peng Zhang; Kai Zhao. Investigation into the influencing factors and adsorption characteristics in the removal of sulfonamide antibiotics by carbonaceous materials. Journal of Cleaner Production 2021, 319, 128692 .

AMA Style

Bin Luo, Guohe Huang, Yao Yao, ChunJiang An, Peng Zhang, Kai Zhao. Investigation into the influencing factors and adsorption characteristics in the removal of sulfonamide antibiotics by carbonaceous materials. Journal of Cleaner Production. 2021; 319 ():128692.

Chicago/Turabian Style

Bin Luo; Guohe Huang; Yao Yao; ChunJiang An; Peng Zhang; Kai Zhao. 2021. "Investigation into the influencing factors and adsorption characteristics in the removal of sulfonamide antibiotics by carbonaceous materials." Journal of Cleaner Production 319, no. : 128692.

Original paper
Published: 31 July 2021 in Environmental Chemistry Letters
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The COVID-19 pandemic has induced many issues for all societal sectors, in particular in the production and disposal of municipal solid waste. This may be because successive easing and reimposing of lockdown measures have deeply changed people’s movements, consumers’ behaviors and waste management. Previous studies have focused on the short-term effects of lockdowns on waste changes, yet there is little knowledge on waste variations during successive lockdowns and unlocking of various lockdown intensities. Moreover, the efficiency of lockdown and its relation to people’s mobility in different countries are still not clear. Here, we studied the variations of amount and composition of municipal solid waste before the pandemic in 2019 and during the pandemic in 2020–2021 in USA, Brazil, Canada, UK, France and Italy. We used a stringency index and a composite mobility index to assess the lockdown intensity and people’s movements. Results show that the mobility index sharply decreased with lockdown intensity, and enforcing measures were more efficient in France and Italy. Compared to 2019, prolonged lockdowns caused larger decreases in the quantity of commercial and construction wastes versus household waste. The initial implementation of lockdown or unlocking measures promoted inhabitants’ consumption, generally leading to the increased waste amount, by about 9% for Trento and 12% for Montreal at the beginning of lockdown, respectively. Moreover, larger variations in the waste amount in Trento, from − 25.3 to 9.8%, were in line with higher lockdown intensity compared to those in Montreal, from − 9.5 to 12.7%, affected by people’s mobility, consumers’ behaviors and waste management.

ACS Style

Mengfan Cai; Christophe Guy; Martin Héroux; Eric Lichtfouse; ChunJiang An. The impact of successive COVID-19 lockdowns on people mobility, lockdown efficiency, and municipal solid waste. Environmental Chemistry Letters 2021, 1 -7.

AMA Style

Mengfan Cai, Christophe Guy, Martin Héroux, Eric Lichtfouse, ChunJiang An. The impact of successive COVID-19 lockdowns on people mobility, lockdown efficiency, and municipal solid waste. Environmental Chemistry Letters. 2021; ():1-7.

Chicago/Turabian Style

Mengfan Cai; Christophe Guy; Martin Héroux; Eric Lichtfouse; ChunJiang An. 2021. "The impact of successive COVID-19 lockdowns on people mobility, lockdown efficiency, and municipal solid waste." Environmental Chemistry Letters , no. : 1-7.

Journal article
Published: 22 July 2021 in Science of The Total Environment
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Marine oil spills are often reported as a result of activities associated with oil exploration, production and transportation. The spilled oil may reach the shoreline, and then the stranded oil can persist for a long time, exerting many negative effects on coastal ecosystems. Conventional shoreline cleanup methods cannot effectively remove the oil residues from affected areas and are very expensive. Therefore, the use of alginate hydrogel coatings was proposed as a new initiative for emergent shoreline oiling prevention. The alginate hydrogel-coated gravels showed high surface roughness, as well as remarkable water wetting and low-oil-adhesion properties. There was a low oil adhesion on the coated gravels in the continuous test with oil/water emulsion flow, indicating the excellent oil-repellent properties of the coated substrate. The results of batch oil-repellent tests showed that independent of the kind or weathering degree of the oil used, oil can be easily washed out from the coated gravels. The coated gravels had good environmental stability and the slightly partial de-crosslinking of alginate structure would not reduce the oil repellence performance. Moreover, the performance of the alginate hydrogel-coated gravel was further proved with a laboratory shoreline tank simulator, in which more stranded oil floated to the water surface and less oil remained on gravels and entered into subsurface. This proposed oiling prevention method can be used not only for shorelines but also for coastal piers, seaports, and solid manmade shorelines. The coating material is derived from the biomass in the ocean and can be degraded under natural conditions. This study may provide a unique direction for the future development of green oil spill control strategy.

ACS Style

Huifang Bi; ChunJiang An; Catherine N. Mulligan; Zheng Wang; Baiyu Zhang; Kenneth Lee. Exploring the use of alginate hydrogel coating as a new initiative for emergent shoreline oiling prevention. Science of The Total Environment 2021, 797, 149234 .

AMA Style

Huifang Bi, ChunJiang An, Catherine N. Mulligan, Zheng Wang, Baiyu Zhang, Kenneth Lee. Exploring the use of alginate hydrogel coating as a new initiative for emergent shoreline oiling prevention. Science of The Total Environment. 2021; 797 ():149234.

Chicago/Turabian Style

Huifang Bi; ChunJiang An; Catherine N. Mulligan; Zheng Wang; Baiyu Zhang; Kenneth Lee. 2021. "Exploring the use of alginate hydrogel coating as a new initiative for emergent shoreline oiling prevention." Science of The Total Environment 797, no. : 149234.

Journal article
Published: 21 July 2021 in Journal of Hazardous Materials
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Understanding the interactions between oil and other particles in shoreline can help determine the environmental risk and cleanup strategy after oil spill. Nevertheless, far less has been known regarding the impact of aged MPs on oil behavior in the shoreline environment. In this study, the aging course of polyethylene (PE) in shaking seawater and ultraviolet (UV) radiation conditions was investigated. The seawater aging mainly affected the physical properties of MPs, increasing its surface pores and hydrophilicity. UV aging significantly affected both the physical and chemical properties of MPs, which increased its hydrophilicity and crystallinity, decreased its mean particle size and introduced oxygen-containing functional groups onto MPs. The two-dimensional correlation spectroscopy (2D COS) analysis confirmed the evolution of oxygen-containing functional groups from C–O to CO. The effects of aged MPs on oil behavior in water-sand system were further explored. The oil remaining percentages were non-linearly changed with the increasing aging degree of MPs. The particle size of the aqueous phase after washing was inversely related to the oil remaining percentage. Further FTIR analysis revealed that C–O and C–H functional groups played an important role in the process of oil adsorbed on MPs.

ACS Style

Qi Feng; ChunJiang An; Zhi Chen; Jianan Yin; Baiyu Zhang; Kenneth Lee; Zheng Wang. Investigation into the impact of aged microplastics on oil behavior in shoreline environments. Journal of Hazardous Materials 2021, 421, 126711 .

AMA Style

Qi Feng, ChunJiang An, Zhi Chen, Jianan Yin, Baiyu Zhang, Kenneth Lee, Zheng Wang. Investigation into the impact of aged microplastics on oil behavior in shoreline environments. Journal of Hazardous Materials. 2021; 421 ():126711.

Chicago/Turabian Style

Qi Feng; ChunJiang An; Zhi Chen; Jianan Yin; Baiyu Zhang; Kenneth Lee; Zheng Wang. 2021. "Investigation into the impact of aged microplastics on oil behavior in shoreline environments." Journal of Hazardous Materials 421, no. : 126711.

Journal article
Published: 14 July 2021 in Journal of Environmental Management
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Coastal environment is one of the most important ecological and socioeconomic areas. However, increasing energy demand and economic development lead to a continuous gas and oil exploration, production, and traffics, which notably raise the risk of oil spill accidents in coastal areas. Sensitivity assessment aiming to determine the coastal features that would be severely impaired by spill incidents is a crucial part of the response planning. In this study, an innovative framework for coastal sensitivity mapping that incorporated ecosystem service (ES) valuation and multidimensional assessment was proposed. Sensitivity was computed by valuing physical, biological, and social-economical indicators from ES perspective and separating each indicator into specific coastal domains. For different ES typologies, provisioning services contributed most to the overall ES value followed by culture services, supporting services, and regulating services. For ES value in different coastal domains, the highest value was recorded in the water column followed by water surface, shoreline, and seabed. However, the shoreline ranked highest regarding the ES value per ha. Sensitivity assessment revealed that sensitive areas differed in different domains, both in distribution and extent. Compared with the scoring method, the ES valuation method showed more coincidence with Ecologically and Biologically Significant Areas (EBSA), representing a more precise and practical approach for sensitivity assessment. A three-dimensional (3D) oil spill model was also applied to generate maps of oil contamination probability in shoreline, water surface, and water column. The obtained results highlighted the significance of incorporating different coastal domains into oil spill responses, and the urgent demand to broaden and deepen our understanding of ecological processes across the vertical coastal zones.

ACS Style

Qi Feng; ChunJiang An; Zhi Chen; Edward Owens; Haibo Niu; Zheng Wang. Assessing the coastal sensitivity to oil spills from the perspective of ecosystem services: A case study for Canada's pacific coast. Journal of Environmental Management 2021, 296, 113240 .

AMA Style

Qi Feng, ChunJiang An, Zhi Chen, Edward Owens, Haibo Niu, Zheng Wang. Assessing the coastal sensitivity to oil spills from the perspective of ecosystem services: A case study for Canada's pacific coast. Journal of Environmental Management. 2021; 296 ():113240.

Chicago/Turabian Style

Qi Feng; ChunJiang An; Zhi Chen; Edward Owens; Haibo Niu; Zheng Wang. 2021. "Assessing the coastal sensitivity to oil spills from the perspective of ecosystem services: A case study for Canada's pacific coast." Journal of Environmental Management 296, no. : 113240.

Journal article
Published: 05 July 2021 in Environmental Pollution
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Oil spills are a serious environmental problem. To better support risk assessment and pollution control for oil spills, a good understanding of oil transport in the environment is required. This study focused on the numerical simulation of the nearshore oil behaviors based on computational fluid dynamics. Based on the Navier-Stokes momentum equations for an incompressible viscous fluid and volume of fluid (VOF) method, a 3D numerical model of three-phase transient flow was developed. The wave number, averaged flow velocity and oil properties would affect the oil spread extent and the oil volume fraction. The higher the averaged flow velocity and wave number, the lower the oil concentration, and the faster the horizontal movement of the oil. The spilled oil may move to contact the seafloor by increasing the averaged flow velocity at the inlet boundary. Through increasing the wave number, the oil would stay near the water surface. In the nearshore, where the wave is the main seawater motion, the oil containment boom should be set preferentially to the direction of wave transmission for oil cleaning. This study shows that by doubling the wave number and increasing the averaged flow velocity (ten times) at the same time, the maximum oil volume fraction would be reduced by around 32%. Finally, the water temperature had no significant impact on the oil migration, and the impact of evaporation should be considered in the simulation.

ACS Style

Mohammadmehdi Raznahan; ChunJiang An; S. Samuel Li; Xiaolong Geng; Michel Boufadel. Multiphase CFD simulation of the nearshore spilled oil behaviors. Environmental Pollution 2021, 288, 117730 .

AMA Style

Mohammadmehdi Raznahan, ChunJiang An, S. Samuel Li, Xiaolong Geng, Michel Boufadel. Multiphase CFD simulation of the nearshore spilled oil behaviors. Environmental Pollution. 2021; 288 ():117730.

Chicago/Turabian Style

Mohammadmehdi Raznahan; ChunJiang An; S. Samuel Li; Xiaolong Geng; Michel Boufadel. 2021. "Multiphase CFD simulation of the nearshore spilled oil behaviors." Environmental Pollution 288, no. : 117730.

Journal article
Published: 26 June 2021 in Journal of Contaminant Hydrology
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Alberta has over 70% of total irrigated land in Canada and 13 irrigation districts are mainly located along the rivers in southern Alberta. The runoff and irrigation return flow can carry excess nutrients, pesticides, and sediments, which adversely affect the river water quality. In the present study, the comprehensive spatiotemporal analysis of land use pattern and stream water quality in southern Alberta was conducted. The water quality monitoring on the South Saskatchewan River watershed within Alberta showed that most water quality indicators did not significantly change between 2003 and 2017. Land use maps demonstrated significant urban expansion and cropland decline in the study area from 2005 to 2015, while the irrigation area increased. Correlation analysis and redundancy analysis revealed that cropland, built-up land, and native grassland were three land use types that were positively correlated with water quality indicators. Stronger correlations between nitrogen concentration and built-up land were found in dry seasons compared with wet seasons. According to the results of cluster analysis, higher water quality indicator concentrations could be observed in groups with a higher proportion of cropland and built-up land. Significant relationships between land use patterns and water quality were found in this study, which demonstrated that further investigation is needed to identify the sources of water pollutants at a smaller scale.

ACS Style

Zhikun Chen; ChunJiang An; Qian Tan; Xuelin Tian; Gongchen Li; Yang Zhou. Spatiotemporal analysis of land use pattern and stream water quality in southern Alberta, Canada. Journal of Contaminant Hydrology 2021, 242, 103852 .

AMA Style

Zhikun Chen, ChunJiang An, Qian Tan, Xuelin Tian, Gongchen Li, Yang Zhou. Spatiotemporal analysis of land use pattern and stream water quality in southern Alberta, Canada. Journal of Contaminant Hydrology. 2021; 242 ():103852.

Chicago/Turabian Style

Zhikun Chen; ChunJiang An; Qian Tan; Xuelin Tian; Gongchen Li; Yang Zhou. 2021. "Spatiotemporal analysis of land use pattern and stream water quality in southern Alberta, Canada." Journal of Contaminant Hydrology 242, no. : 103852.

Editorial
Published: 23 June 2021 in Sustainability
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To prevent the transmission of the Coronavirus (SARS-CoV-2) in the public, the demand and consumption of personal protective equipment (PPE) increased drastically. Such wide use of PPE has brough a new challenge to waste management and disposal. It is difficult to sort PPE waste before further treatment, and such waste will often end up being processed by some traditional disposal methods. During the pandemic, incineration and landfill facilities are currently under significant pressure. In addition, a certain amount of PPE waste is discarded into the environment rather than going to landfills and incinerators. It not only directly affects the ecosystem, but also indirectly threatens human health through various routes of exposure. PPE waste is also the source and carrier of pathogens and chemical contaminants, causing a secondary pollution. Therefore, it is necessary to establish appropriate strategies to deal with the PPE problems related to energy, environment and health, requiring the collaborative efforts of researchers, practitioners, policymakers, and governments.

ACS Style

Zheng Wang; Christophe Guy; Kelvin Ng; ChunJiang An. A New Challenge for the Management and Disposal of Personal Protective Equipment Waste during the COVID-19 Pandemic. Sustainability 2021, 13, 7034 .

AMA Style

Zheng Wang, Christophe Guy, Kelvin Ng, ChunJiang An. A New Challenge for the Management and Disposal of Personal Protective Equipment Waste during the COVID-19 Pandemic. Sustainability. 2021; 13 (13):7034.

Chicago/Turabian Style

Zheng Wang; Christophe Guy; Kelvin Ng; ChunJiang An. 2021. "A New Challenge for the Management and Disposal of Personal Protective Equipment Waste during the COVID-19 Pandemic." Sustainability 13, no. 13: 7034.

Review
Published: 23 June 2021 in Renewable and Sustainable Energy Reviews
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Bioenergy is considered a promising alternative to achieve carbon neutrality and emission reduction. There is a debate over the role of bioenergy in climate change mitigation because of carbon emissions from the production and utilization of biofuels. Recently, studies on emissions of biogenic volatile organic compounds (BVOCs) have substantially increased as they have a significant impact on human health and climate change due to large emissions and high reactivity. A scientometric analysis of 2895 journal papers during 1991 and 2020 related to BVOC emissions from the Web of Science Core Collection was conducted by CiteSpace and Carrot2. Results showed that three main knowledge domains were BVOC emissions and drivers, BVOCs and their oxidation products in biosphere-atmosphere exchange, and soil BVOCs in plant-microbe interactions during the period under study. Generally, the relationships between plant BVOC emissions and environmental variables (e.g., temperature, drought, light solar radiation, humidity, availability of nutrients, carbon dioxide, ozone, etc.) can be investigated by measurement techniques (i.e., chamber) or models (i.e., Model of Emissions of Gases and Aerosols from Nature). Soils could work as both the sink and source of BVOCs through various processes that are affected by soil temperatures, pH, organic matter, and moisture. Anthropogenic activities might affect the emission of BVOCs and promote the formation of BVOC-derived pollutants (e.g., ozone, particles, etc.). Incorporating BVOC emissions and their relationships with pollutants, biomass, and energy into environmental management and decision-making is a promising direction.

ACS Style

Mengfan Cai; ChunJiang An; Christophe Guy. A scientometric analysis and review of biogenic volatile organic compound emissions: Research hotspots, new frontiers, and environmental implications. Renewable and Sustainable Energy Reviews 2021, 149, 111317 .

AMA Style

Mengfan Cai, ChunJiang An, Christophe Guy. A scientometric analysis and review of biogenic volatile organic compound emissions: Research hotspots, new frontiers, and environmental implications. Renewable and Sustainable Energy Reviews. 2021; 149 ():111317.

Chicago/Turabian Style

Mengfan Cai; ChunJiang An; Christophe Guy. 2021. "A scientometric analysis and review of biogenic volatile organic compound emissions: Research hotspots, new frontiers, and environmental implications." Renewable and Sustainable Energy Reviews 149, no. : 111317.

Journal article
Published: 22 June 2021 in Environmental Pollution
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As a volatile organic compound existing in the atmosphere, methanol plays a key role in atmospheric chemistry due to its comparatively high abundance and long lifetime. Croplands are a significant source of biogenic methanol, but there is a lack of systematic assessment for the production and emission of methanol from crops in various phases. In this study, methanol emissions from spring wheat during the growing period were estimated using a developed emission model. The temporal and spatial variations of methanol emissions of spring wheat in a Canadian province were investigated. The averaged methanol emission of spring wheat is found to be 37.94 ± 7.5 μg·m−2·h−1, increasing from north to south and exhibiting phenological peak to valley characteristics. Moreover, cold crop districts are projected to be with higher increase in air temperature and consequent methanol emissions during 2020–2099. Furthermore, the seasonality of methanol emissions is found to be positively correlated to concentrations of CO, filterable particulate matter, and PM10 but negatively related to NO2 and O3. The uncertainty and sensitivity analysis results suggest that methanol emissions show a Gamma probabilistic distribution, and growth length, air temperature, solar radiation and leafage are the most important influencing variables. In most cases, methanol emissions increase with air temperature in the range of 3–35 °C while the excessive temperature may result in decreased methanol emissions because of inactivated enzyme activity or increased instant methanol emissions due to heat injury. Notably, induced emission might be the major source of biogenic methanol of mature leaves. The results of this study can be used to develop appropriate strategies for regional emission management of cropping systems.

ACS Style

Mengfan Cai; ChunJiang An; Christophe Guy; Chen Lu; Fereshteh Mafakheri. Assessing the regional biogenic methanol emission from spring wheat during the growing season: A Canadian case study. Environmental Pollution 2021, 287, 117602 .

AMA Style

Mengfan Cai, ChunJiang An, Christophe Guy, Chen Lu, Fereshteh Mafakheri. Assessing the regional biogenic methanol emission from spring wheat during the growing season: A Canadian case study. Environmental Pollution. 2021; 287 ():117602.

Chicago/Turabian Style

Mengfan Cai; ChunJiang An; Christophe Guy; Chen Lu; Fereshteh Mafakheri. 2021. "Assessing the regional biogenic methanol emission from spring wheat during the growing season: A Canadian case study." Environmental Pollution 287, no. : 117602.

Review article
Published: 26 May 2021 in Journal of Cleaner Production
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Despite advances in technology and safety measures, accidental releases of crude oil and refined products into marine and freshwater environments remains a major environmental concern. To minimize the impacts of future spills on our aquatic ecosystems and human health, numerous studies have been refocused on the development of novel approaches to remove oil from water. An emerging low-cost, eco-friendly method is based on the use non-toxic and biodegradable cellulose-based sorbents for oil retrieval and recovery from water. Herein we seek to succinctly analyze the progress of cellulose-based materials developed to date in terms of their effectiveness as an oil sorbent and development potential into a commercial product for oil spill recovery operations. The results of the review highlight the potential use of cellulose nanocrystals and cellulose nanofibrils as sorbent materials with highly desirable properties for oil spills cleanup. With unique hydrophobic and oleophilic properties (in terms of oil selectivity) and physical and mechanical properties (high surface area and small pore size), cellulose-based sorbents may be an ideal alternative material for use in cleaning up oil spills. Combining both hydrophobic and magnetic properties by introduction of iron oxide nanoparticles offers high reusability and functionality, easy operation and facile separation of the cellulose-based sorbents; thus, it would offer a new approach against oil spills and fouling challenges. Furthermore, their reusability after oil uptake serves as additional steps to sustainability. Nevertheless, work is still required to determine and figure out the practical levels of utility of the cellulose-based sorbents on a commercial scale, facilitating the control and management of minor oil spills.

ACS Style

Samia ben Hammouda; Zhi Chen; ChunJiang An; Kenneth Lee. Recent advances in developing cellulosic sorbent materials for oil spill cleanup: A state-of-the-art review. Journal of Cleaner Production 2021, 311, 127630 .

AMA Style

Samia ben Hammouda, Zhi Chen, ChunJiang An, Kenneth Lee. Recent advances in developing cellulosic sorbent materials for oil spill cleanup: A state-of-the-art review. Journal of Cleaner Production. 2021; 311 ():127630.

Chicago/Turabian Style

Samia ben Hammouda; Zhi Chen; ChunJiang An; Kenneth Lee. 2021. "Recent advances in developing cellulosic sorbent materials for oil spill cleanup: A state-of-the-art review." Journal of Cleaner Production 311, no. : 127630.

Paper
Published: 11 May 2021 in Environmental Science: Nano
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Surface functional groups and the resultant changes in adsorption performance can be changed by long-term effects on pyrogenic organic matters with TBBPA, causing impacts to native vegetations.

ACS Style

Jian Shen; Guohe Huang; ChunJiang An; Yao Yao; Peng Zhang; Xiaying Xin; Scott Rosendahl. Long-term effects of TBBPA-contaminated pyrogenic organic matter under abiotic aging: insights on immobilization capacity, surface functionality correlation, and phytotoxicity to Thinopyrum ponticum. Environmental Science: Nano 2021, 1 .

AMA Style

Jian Shen, Guohe Huang, ChunJiang An, Yao Yao, Peng Zhang, Xiaying Xin, Scott Rosendahl. Long-term effects of TBBPA-contaminated pyrogenic organic matter under abiotic aging: insights on immobilization capacity, surface functionality correlation, and phytotoxicity to Thinopyrum ponticum. Environmental Science: Nano. 2021; ():1.

Chicago/Turabian Style

Jian Shen; Guohe Huang; ChunJiang An; Yao Yao; Peng Zhang; Xiaying Xin; Scott Rosendahl. 2021. "Long-term effects of TBBPA-contaminated pyrogenic organic matter under abiotic aging: insights on immobilization capacity, surface functionality correlation, and phytotoxicity to Thinopyrum ponticum." Environmental Science: Nano , no. : 1.

Journal article
Published: 08 May 2021 in Journal of Hazardous Materials
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The COVID-19 pandemic has driven explosive growth in the use of masks has resulted in many issues related to the disposal and management of waste masks. As improperly disposed masks enter the ocean, the risk to the marine ecological system is further aggravated, especially in the shoreline environment. The objective of this study is to explore the changing characteristics and environmental behaviors of disposable masks when exposed to the shoreline environment. The transformation of chain structure and chemical composition of masks as well as the decreased mechanical strength of masks after UV weathering were observed. The melt-blown cloth in the middle layer of masks was found to be particularly sensitive to UV irradiation. A single weathered mask can release more than 1.5 million microplastics to the aqueous environment. The physical abrasion caused by sand further exacerbated the release of microplastic particles from masks, with more than 16 million particles released from just one weathered mask in the presence of sand. The study results indicate that shorelines are not only the main receptor of discarded masks from oceans and lands, but also play host to further transformation of masks to plastic particles.

ACS Style

Zheng Wang; ChunJiang An; Xiujuan Chen; Kenneth Lee; Baiyu Zhang; Qi Feng. Disposable masks release microplastics to the aqueous environment with exacerbation by natural weathering. Journal of Hazardous Materials 2021, 417, 126036 .

AMA Style

Zheng Wang, ChunJiang An, Xiujuan Chen, Kenneth Lee, Baiyu Zhang, Qi Feng. Disposable masks release microplastics to the aqueous environment with exacerbation by natural weathering. Journal of Hazardous Materials. 2021; 417 ():126036.

Chicago/Turabian Style

Zheng Wang; ChunJiang An; Xiujuan Chen; Kenneth Lee; Baiyu Zhang; Qi Feng. 2021. "Disposable masks release microplastics to the aqueous environment with exacerbation by natural weathering." Journal of Hazardous Materials 417, no. : 126036.

Review
Published: 07 April 2021 in Environmental Systems Research
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Over the past decades, a large amount of petroleum pollutants has been released into the environment resulting from various activities related to petrochemicals. The discharge of wastewater with petrochemicals can pose considerable risk of harm to the human health and the environment. The use of adsorbents has received much consideration across the environmental field as an effective approach for organic pollutant removal. There is a particular interest in the use of biomass adsorbent as a promising environmentally-friendly and low-cost option for removing pollutants. In this article, we present a review of biomass-derived adsorbents for the removal of petroleum pollutants from water. The features of different adsorbents such as algae, fungi, and bacteria biomasses are summarized, as is the process of removing oil and PAHs using biomass-derived adsorbents. Finally, recommendations for future study are proposed.

ACS Style

Azar Vahabisani; ChunJiang An. Use of biomass-derived adsorbents for the removal of petroleum pollutants from water: a mini-review. Environmental Systems Research 2021, 10, 1 -10.

AMA Style

Azar Vahabisani, ChunJiang An. Use of biomass-derived adsorbents for the removal of petroleum pollutants from water: a mini-review. Environmental Systems Research. 2021; 10 (1):1-10.

Chicago/Turabian Style

Azar Vahabisani; ChunJiang An. 2021. "Use of biomass-derived adsorbents for the removal of petroleum pollutants from water: a mini-review." Environmental Systems Research 10, no. 1: 1-10.

Journal article
Published: 01 April 2021 in Journal of Cleaner Production
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The assessment of GHG emissions from spring wheat cropping system in Saskatchewan was conducted in this study. A general emission assessment model was developed. The main sources of GHG included emissions from farming operations, emissions from the manufacturing and transportation of N/P fertilizer, emissions from herbicides usage, and direct and indirect land emissions. The total GHG emission was around 3.36 × 106 Mg CO2-eq in 2012. The total GHG emissions mainly came from the manufacturing, storage, delivery, and application of nitrogen fertilizer and environmental conditions had a significant effect on GHG emissions. From north to south Saskatchewan, the total GHG emission was decreasing as Pr/PE decreased. In high Pr/PE area, there was a GHG emission of 474 kg CO2-eq t−1 of grain, which was 41% greater than that in low Pr/PE. Through applying multivariate factorial analysis, it was found that the emission factor from direct emission had the most significant impact on the total GHG emission. The total GHG emission in higher Pr/PE area was more sensitive to the N fertilizer application. The understanding of detailed effects of these parameters and interactions can help determine what would have significant effects on total GHG emission and develop the appropriate strategy for sustainable management of agriculture.

ACS Style

Yarong Shi; Guohe Huang; ChunJiang An; Yang Zhou; Jianan Yin. Assessment of regional greenhouse gas emissions from spring wheat cropping system: A case study of Saskatchewan in Canada. Journal of Cleaner Production 2021, 301, 126917 .

AMA Style

Yarong Shi, Guohe Huang, ChunJiang An, Yang Zhou, Jianan Yin. Assessment of regional greenhouse gas emissions from spring wheat cropping system: A case study of Saskatchewan in Canada. Journal of Cleaner Production. 2021; 301 ():126917.

Chicago/Turabian Style

Yarong Shi; Guohe Huang; ChunJiang An; Yang Zhou; Jianan Yin. 2021. "Assessment of regional greenhouse gas emissions from spring wheat cropping system: A case study of Saskatchewan in Canada." Journal of Cleaner Production 301, no. : 126917.

Journal article
Published: 28 March 2021 in Journal of Cleaner Production
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Government subsidy for waste incineration is an effective measure to promote the economic growth of the waste management system. It is of vital importance to formulate optimal management strategies for decision-makers by considering conflicting objectives among system cost and environmental risk under complex uncertainties. In this study, an inexact two-stage multi-objective planning (ITMOP) model is proposed for supporting municipal solid waste (MSW) management. This model advanced existing optimization methods through integrating interval linear programming and two-stage stochastic programming within the multi-objective programming framework, where various uncertainties expressed as interval value and probability distributions were effectively reflected. The environmental risks associated with exhaust gas and leachate emission from incineration and landfill are quantitively assessed. The economic performance of these two waste disposal facilities is evaluated through the introduction of different energy recovery and subsidy policy scenarios. The ITMOP-based municipal solid waste management model is applied to a case study of MSW management planning in the Baotou city of China. Ten scenarios integrated with different economic incentives are designed for analyzing the optimized solutions. The generated waste flow allocation pattern and facility expansion capacity results provide scientific waste management strategies for local authorities. Moreover, the obtained total system cost and environmental risks under different scenarios can help policymakers resolve eco-economic conflicts according to their preferences. Waste incineration will gradually replace landfilling as the mainstream of waste treatment in the future. Revenues from energy recovery and financial subsidies for incineration can compensate for its high economic cost and promote waste resource utilization. The results indicate that the local government can use the subsidy policy to encourage waste disposal to proper facilities and simultaneously reduce environmental emissions.

ACS Style

Jianan Yin; Guohe Huang; Yulei Xie; ChunJiang An; Xiujuan Chen. An inexact two-stage multi-objective waste management planning model under considerations of subsidies and uncertainties: A case study of Baotou, China. Journal of Cleaner Production 2021, 298, 126873 .

AMA Style

Jianan Yin, Guohe Huang, Yulei Xie, ChunJiang An, Xiujuan Chen. An inexact two-stage multi-objective waste management planning model under considerations of subsidies and uncertainties: A case study of Baotou, China. Journal of Cleaner Production. 2021; 298 ():126873.

Chicago/Turabian Style

Jianan Yin; Guohe Huang; Yulei Xie; ChunJiang An; Xiujuan Chen. 2021. "An inexact two-stage multi-objective waste management planning model under considerations of subsidies and uncertainties: A case study of Baotou, China." Journal of Cleaner Production 298, no. : 126873.

Journal article
Published: 21 March 2021 in Journal of Environmental Management
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The shorelines frequently suffer adverse impacts from oil spill accidents. As one important technique of shoreline cleanup, the application of surface washing agents (SWAs) can help achieve high oil removal from shoreline substrates with less damage to affected zone. In this study, a framework for evaluation and selection of SWAs in oil spill incidents was constructed to better understand and apply this technique. A decision tree was firstly developed to illustrate all possible scenarios which are appropriate to use SWAs in consideration of oil collectability, shoreline character, types and amount of stranded oil, and cleanup requirement. Based on literature review, theoretical modeling, and experts’ suggestions, an integrated multi-criteria decision analysis (MCDA) method was then come up to select the most preferred SWA from five aspects of toxicity, effectiveness, minimal dispersion, demonstrated field test, and cost. Its suitability and rationality were proved by a hypothetical case. In addition, sensitivity analysis was performed by changing the weight of each criterion independently to check the priority rank of alternatives, and it also verified the robustness and stability of this model. The presented framework has significant implications for future research and application of SWAs in the shoreline cleanup.

ACS Style

Huifang Bi; ChunJiang An; Edward Owens; Kenneth Lee; Zhi Chen; Catherine Mulligan; Elliott Taylor; Michel Boufadel. A framework for the evaluation and selection of shoreline surface washing agents in oil spill response. Journal of Environmental Management 2021, 287, 112346 .

AMA Style

Huifang Bi, ChunJiang An, Edward Owens, Kenneth Lee, Zhi Chen, Catherine Mulligan, Elliott Taylor, Michel Boufadel. A framework for the evaluation and selection of shoreline surface washing agents in oil spill response. Journal of Environmental Management. 2021; 287 ():112346.

Chicago/Turabian Style

Huifang Bi; ChunJiang An; Edward Owens; Kenneth Lee; Zhi Chen; Catherine Mulligan; Elliott Taylor; Michel Boufadel. 2021. "A framework for the evaluation and selection of shoreline surface washing agents in oil spill response." Journal of Environmental Management 287, no. : 112346.

Journal article
Published: 01 March 2021 in Sustainable Cities and Society
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Biomass, as one of the most available renewable energies, could reduce dependency on fossil fuels and the consequent environmental impacts. There is a need for biomass supply chain management, which is managing bioenergy production from harvesting feedstock to energy conversion facilities. In case of remote communities, bioenergy adoption requires dealing with dispersed geographies of suppliers and places of consumption with small scales of energy demand. As such, coordination plays a key role in increasing the efficiency of the biomass supply chain network through bundling of demand and thus improving the economy of scale. This paper employs a game-theoretic approach to formulate a coordinated biomass supply chain with three echelons including suppliers, hubs, and energy convertors. To investigate the strategic interactions of participants, three decision making structure scenarios have been considered under Stackelberg game providing insights into the impact of power distribution, the role of side payments in enforcing the flow of decisions, and the resulting efficiency and performance improvements. In doing so, a case study bioenergy supply chain for three northern Canadian communities is explored to demonstrate the application of the proposed formulation, solution methods, and the practicality and significance of the adopted approach and outcomes for remote communities.

ACS Style

Zahra Vazifeh; Fereshteh Mafakheri; ChunJiang An. Biomass supply chain coordination for remote communities: A game-theoretic modeling and analysis approach. Sustainable Cities and Society 2021, 69, 102819 .

AMA Style

Zahra Vazifeh, Fereshteh Mafakheri, ChunJiang An. Biomass supply chain coordination for remote communities: A game-theoretic modeling and analysis approach. Sustainable Cities and Society. 2021; 69 ():102819.

Chicago/Turabian Style

Zahra Vazifeh; Fereshteh Mafakheri; ChunJiang An. 2021. "Biomass supply chain coordination for remote communities: A game-theoretic modeling and analysis approach." Sustainable Cities and Society 69, no. : 102819.

Research article
Published: 26 February 2021 in Environmental Science and Pollution Research
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This study focused on the impact of microalgal biomass on the oil behavior in a sand-water system. The microalgal biomass was characterized, and the interaction between microalgal biomass and oil was analyzed through Fourier transform infrared (FTIR) spectroscopy. The effects of different conditions including microalgal biomass dose, pH, temperature, and salinity on the oil behavior were investigated. A two-level factorial analysis was also used to further explore the interactions of these conditions. The microalgal biomass was found to be the most influential parameter for the residual crude oil on sand. Higher microalgal biomass dose resulted in less residual oil on sand. The remaining oil decreased with increasing solution pH from 4 to 7, and an increase of remaining oil was observed when the pH was further increased above 7. In addition, temperature and salinity could affect the removal of crude oil in the presence of microalgal biomass. Increasing the temperature could result in less residual oil on sand and there was higher oil removal at the high salinity. The effects of microalgal biomass on the oil behavior could also be impacted by environmental conditions. The results of this study indicate that the presence of algae in the oiled shoreline can be considered in the comprehensive evaluation of spill risk and prediction of oil fate.

ACS Style

Azar Vahabisani; ChunJiang An; Xiaying Xin; Edward Owens; Kenneth Lee. Exploring the effects of microalgal biomass on the oil behavior in a sand-water system. Environmental Science and Pollution Research 2021, 28, 32985 -32994.

AMA Style

Azar Vahabisani, ChunJiang An, Xiaying Xin, Edward Owens, Kenneth Lee. Exploring the effects of microalgal biomass on the oil behavior in a sand-water system. Environmental Science and Pollution Research. 2021; 28 (25):32985-32994.

Chicago/Turabian Style

Azar Vahabisani; ChunJiang An; Xiaying Xin; Edward Owens; Kenneth Lee. 2021. "Exploring the effects of microalgal biomass on the oil behavior in a sand-water system." Environmental Science and Pollution Research 28, no. 25: 32985-32994.

Journal article
Published: 26 February 2021 in Science of The Total Environment
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The oily waste generated from the cleanup operations during shoreline spill response can result in challenging environmental and socioeconomic problems. In this study, an inexact inventory-theory-based optimization model (ITOM) for oily waste management during shoreline spill response was developed to support the spill management team. The most appropriate facilities and optimal waste allocation scheme under uncertainty can be selected to achieve minimum total system cost. To satisfy the demand of oily waste treatment, these oily waste management facilities can be selectively opened depending on the situation. In the combination with the economic order quantity model of inventory theory, the developed model can provide the optimal solutions of batch size and order cycle for treatment facilities to minimize the inventory cost. A case study was used to demonstrate the application of ITOM. The obtained solutions include the facilities selection and waste allocation for waste collection and destocking stages under different risk levels. These solutions can provide a good guideline with managers to analyze the trade-offs between system cost and constraint-violation risks. The developed model has high application potential as a job-aid tool to manage the oily waste generated from oiled shoreline cleanup operations.

ACS Style

Zhikun Chen; ChunJiang An; Xiujuan Chen; Elliott Taylor; Ashutosh Bagchi; Xuelin Tian. Inexact inventory-theory-based optimization of oily waste management system in shoreline spill response. Science of The Total Environment 2021, 777, 146078 .

AMA Style

Zhikun Chen, ChunJiang An, Xiujuan Chen, Elliott Taylor, Ashutosh Bagchi, Xuelin Tian. Inexact inventory-theory-based optimization of oily waste management system in shoreline spill response. Science of The Total Environment. 2021; 777 ():146078.

Chicago/Turabian Style

Zhikun Chen; ChunJiang An; Xiujuan Chen; Elliott Taylor; Ashutosh Bagchi; Xuelin Tian. 2021. "Inexact inventory-theory-based optimization of oily waste management system in shoreline spill response." Science of The Total Environment 777, no. : 146078.