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Effective marine oil spill management (MOSM) is crucial to minimize the catastrophic impacts of oil spills. MOSM is a complex system affected by various factors, such as characteristics of spilled oil and environmental conditions. Oil spill detection, characterization, and monitoring; risk evaluation; response selection and process optimization; and waste management are the key components of MOSM demanding timely decision-making. Applying robust computational techniques based on real-time data (e.g., satellite and aerial observations) and historical records of oil spill incidents may considerably facilitate decision-making processes. Various soft-computing and artificial intelligence-based models and mathematical techniques have been used for the implementation of MOSM’s components. This study presents a review of literature published since 2010 on the application of computational techniques in MOSM. A statistical evaluation is performed concerning the temporal distribution of papers, publishers’ engagement, research subfields, countries of studies, and selected case studies. Key findings reported in the literature are summarized for two main practices in MOSM: spill detection, characterization, and monitoring; and spill management and response optimization. Potential gaps in applying computational techniques in MOSM have been identified, and a holistic computational-based framework has been suggested for effective MOSM.
Saeed Mohammadiun; Guangji Hu; Abdorreza Alavi Gharahbagh; Jianbing Li; Kasun Hewage; Rehan Sadiq. Intelligent Computational Techniques in Marine Oil Spill Management: A Critical Review. Journal of Hazardous Materials 2021, 419, 126425 .
AMA StyleSaeed Mohammadiun, Guangji Hu, Abdorreza Alavi Gharahbagh, Jianbing Li, Kasun Hewage, Rehan Sadiq. Intelligent Computational Techniques in Marine Oil Spill Management: A Critical Review. Journal of Hazardous Materials. 2021; 419 ():126425.
Chicago/Turabian StyleSaeed Mohammadiun; Guangji Hu; Abdorreza Alavi Gharahbagh; Jianbing Li; Kasun Hewage; Rehan Sadiq. 2021. "Intelligent Computational Techniques in Marine Oil Spill Management: A Critical Review." Journal of Hazardous Materials 419, no. : 126425.
An integrated geospatial correlation analysis (GCA)-human health risk assessment (HHRA) approach was developed to investigate abandoned industrial sites featured by heterogeneous contamination data. Critical areas of high health risk concerns can be prioritized for remediation using the integrated approach. An abandoned chemical complex site in Hubei, China was investigated as a case study. GCA and HHRA were performed using soil and groundwater sampling data collected in 2016 and 2019. Benzene, chlorobenzene, dichlorobenzenes, 2-nitrochlorobenzene, and α-hexachlorocyclohexane were determined to be critical contaminants in soil. The 2019 sampling data revealed new contaminated locations that were not found in the 2016 sampling campaign. High concentrations (89.81–386.55 mg/L) of vinyl chloride were also found in groundwater samples. Several critical location clusters of high concentrations of dichlorobenzenes, chlorobenzene, and α-hexachlorocyclohexane were found within the site according to the GCA outcomes. These contaminants could pose significant cancer and non-cancer risks to onsite workers. The critical areas were ranked according to cancer and non-cancer risks estimated by HHRA, respectively, for informed remediation planning. Among the critical contaminants, α-hexachlorocyclohexane, 2-nitrochlorobenzene, and 1,4-dichlorobenzene in soil, as well as vinyl chloride in groundwater, contributed a predominant part to the total health risk. The integrated approach can be used to assess the contamination of other similar abandoned industrial complex sites.
Guangji Hu; Huan Liu; Chang Chen; Jianbing Li; Haobo Hou; Kasun Hewage; Rehan Sadiq. An integrated geospatial correlation analysis and human health risk assessment approach for investigating abandoned industrial sites. Journal of Environmental Management 2021, 293, 112891 .
AMA StyleGuangji Hu, Huan Liu, Chang Chen, Jianbing Li, Haobo Hou, Kasun Hewage, Rehan Sadiq. An integrated geospatial correlation analysis and human health risk assessment approach for investigating abandoned industrial sites. Journal of Environmental Management. 2021; 293 ():112891.
Chicago/Turabian StyleGuangji Hu; Huan Liu; Chang Chen; Jianbing Li; Haobo Hou; Kasun Hewage; Rehan Sadiq. 2021. "An integrated geospatial correlation analysis and human health risk assessment approach for investigating abandoned industrial sites." Journal of Environmental Management 293, no. : 112891.
Jianbing Li. Value Added Utilization of Petroleum Sludge Waste. Proceedings of the 5th International Conference of Recent Trends in Environmental Science and Engineering (RTESE'21) 2021, 1 .
AMA StyleJianbing Li. Value Added Utilization of Petroleum Sludge Waste. Proceedings of the 5th International Conference of Recent Trends in Environmental Science and Engineering (RTESE'21). 2021; ():1.
Chicago/Turabian StyleJianbing Li. 2021. "Value Added Utilization of Petroleum Sludge Waste." Proceedings of the 5th International Conference of Recent Trends in Environmental Science and Engineering (RTESE'21) , no. : 1.
Phosphorus (P) is a non-renewable resource, and its recovery and recycling are necessary for meeting future P demands and environmental conservation. Ash and hydrochar from incineration and hydrothermal liquefaction (HTL) of municipal sludge, respectively, represent promising sources for efficient P recovery. The full-scale application of wet-chemical techniques has proven their technical feasibility for P recovery from sludge-derived ash. HTL for sludge treatment has received significant attention for producing biocrude with net-positive energy recovery. P recovery from the solid by-product of sludge HTL, hydrochar, is a critical step in holistic sustainable sludge management. This review aims to guide P recovery from sludge-derived ash and hydrochar by presenting recent advances in wet-chemical extraction and precipitation. By comparing their characteristics, ash and hydrochar derived from municipal sludge exhibit similar feasibilities and challenges for P recovery. Extraction is recognized as the critical step for P recovery. The advantages and disadvantages of various P extraction approaches are provided. Acidic extraction achieves high efficiency (up to 100%) but requires removal of co-extracted heavy metals. Alkaline extraction prevents metals contamination but shows low efficiency (<70%). Sequential extraction is first identified as an important advance in this review, with promising P extraction efficiencies (70–91%) and low metal interferences. Three possible fertilizers (struvite, calcium phosphates, and vivianite) are recommended through the final precipitation, given their pros and cons of recovery. Ultimately, this review highlights the need for a wastewater biorefinery integrating wastewater treatment, HTL (energy recovery), and nutrient recovery for sustainable sludge management.
Huan Liu; Guangji Hu; Ibrahim Alper Basar; Jianbing Li; Nathalie Lyczko; Ange Nzihou; Cigdem Eskicioglu. Phosphorus recovery from municipal sludge-derived ash and hydrochar through wet-chemical technology: A review towards sustainable waste management. Chemical Engineering Journal 2021, 417, 129300 .
AMA StyleHuan Liu, Guangji Hu, Ibrahim Alper Basar, Jianbing Li, Nathalie Lyczko, Ange Nzihou, Cigdem Eskicioglu. Phosphorus recovery from municipal sludge-derived ash and hydrochar through wet-chemical technology: A review towards sustainable waste management. Chemical Engineering Journal. 2021; 417 ():129300.
Chicago/Turabian StyleHuan Liu; Guangji Hu; Ibrahim Alper Basar; Jianbing Li; Nathalie Lyczko; Ange Nzihou; Cigdem Eskicioglu. 2021. "Phosphorus recovery from municipal sludge-derived ash and hydrochar through wet-chemical technology: A review towards sustainable waste management." Chemical Engineering Journal 417, no. : 129300.
The challenging oil spill response in the Arctic calls for effective response decision support tools. In this study, a framework comprising the development of various integrated fuzzy decision tree and regression (FDTR) models as well as model optimization was developed to facilitate the selection of suitable response methods for oil spill accidents in Arctic waters. The FDTR models took into account the influential attributes affecting the effectiveness of oil spill response in harsh Arctic environments. Different FDTR models were developed based on the combinations of three regression analyses, including linear, non-linear, and Gaussian process regression (GPR) and four information evaluation measures for splitting a decision tree, including information gain, deviance, GINI impurities (GINI), and misclassification error. Non-dominated sorting differential evolution (NSDE) optimization was employed to enhance the predictive performance of the FDTR models. The prediction performance of the FDTR models was compared using an oil spill dataset. Using this framework, the average prediction accuracy and the number of rules (representing the robustness) of FDTRs were increased by 14% and decreased by 57%, respectively. A set of optimal prediction models to promptly select an appropriate response method can be obtained using this framework. Among all models, GPR-GINI performed the best concerning optimal values of objective functions.
Saeed Mohammadiun; Guangji Hu; Abdorreza Alavi Gharahbagh; Reza Mirshahi; Jianbing Li; Kasun Hewage; Rehan Sadiq. Optimization of integrated fuzzy decision tree and regression models for selection of oil spill response method in the Arctic. Knowledge-Based Systems 2020, 213, 106676 .
AMA StyleSaeed Mohammadiun, Guangji Hu, Abdorreza Alavi Gharahbagh, Reza Mirshahi, Jianbing Li, Kasun Hewage, Rehan Sadiq. Optimization of integrated fuzzy decision tree and regression models for selection of oil spill response method in the Arctic. Knowledge-Based Systems. 2020; 213 ():106676.
Chicago/Turabian StyleSaeed Mohammadiun; Guangji Hu; Abdorreza Alavi Gharahbagh; Reza Mirshahi; Jianbing Li; Kasun Hewage; Rehan Sadiq. 2020. "Optimization of integrated fuzzy decision tree and regression models for selection of oil spill response method in the Arctic." Knowledge-Based Systems 213, no. : 106676.
Oil-based drill cuttings (OBDCs) were managed in two scenarios including low-temperature thermal desorption (LTTD) and secure landfill through a case study. The removal of polycyclic aromatic hydrocarbons (PAHs) and heavy metals in OBDCs by LTTD under different conditions was investigated. Probabilistic human health risk assessment was performed to quantify the health risk posed to waste management workers under the two scenarios, while the associated costs were also analyzed. The results show that LTTD at 300 °C for >20 min could remove 96.27% of PAHs in OBDCs but its removal effect on heavy metals was not significant. It was found that cancer risks posed by PAHs in both securely landfilled and LTTD-treated OBDCs were not significant (<1e-06); however, significant cancer risks (7.95e-05–9.45e-05) were identified for exposure to toxic heavy metals. Increased health risk was observed as a result of exposure to LTTD treatment residues compared to securely landfilled OBDCs. Inhalation of chromium(VI) and oral ingestion of arsenic in OBDCs were critical exposure routes. Both cancer and non-cancer risks in the secure landfill scenario were negligible. The cost analysis results suggest that LTTD combined with stabilization/solidification could be more economically attractive than secure landfill for the handling of OBDCs.
Guangji Hu; Huan Liu; Chang Chen; Haobo Hou; Jianbing Li; Kasun Hewage; Rehan Sadiq. Low-temperature thermal desorption and secure landfill for oil-based drill cuttings management: Pollution control, human health risk, and probabilistic cost assessment. Journal of Hazardous Materials 2020, 410, 124570 .
AMA StyleGuangji Hu, Huan Liu, Chang Chen, Haobo Hou, Jianbing Li, Kasun Hewage, Rehan Sadiq. Low-temperature thermal desorption and secure landfill for oil-based drill cuttings management: Pollution control, human health risk, and probabilistic cost assessment. Journal of Hazardous Materials. 2020; 410 ():124570.
Chicago/Turabian StyleGuangji Hu; Huan Liu; Chang Chen; Haobo Hou; Jianbing Li; Kasun Hewage; Rehan Sadiq. 2020. "Low-temperature thermal desorption and secure landfill for oil-based drill cuttings management: Pollution control, human health risk, and probabilistic cost assessment." Journal of Hazardous Materials 410, no. : 124570.
Guangming Zhang; Jianbing Li; Hongjie Wang; Akintunde Babatunde. Recent advances in constructed wetland for wastewater treatment. Bioresource Technology 2020, 321, 124378 .
AMA StyleGuangming Zhang, Jianbing Li, Hongjie Wang, Akintunde Babatunde. Recent advances in constructed wetland for wastewater treatment. Bioresource Technology. 2020; 321 ():124378.
Chicago/Turabian StyleGuangming Zhang; Jianbing Li; Hongjie Wang; Akintunde Babatunde. 2020. "Recent advances in constructed wetland for wastewater treatment." Bioresource Technology 321, no. : 124378.
In recent years, ionic liquids have received increasing interests as an effective demulsifier due to their characteristics of non-flammability, thermal stability, recyclability, and low vapor pressure. In this study, emulsion formation and types, chemical demulsification system, the application of ionic liquids as a chemical demulsifier, and key factors affecting their performance were comprehensively reviewed. Future challenges and opportunities of ionic liquids application for chemical demulsification were also discussed. The review indicted that the demulsification performance was affected by the type, molecular weight, and concentration of ionic liquids. Moreover, other factors, including the salinity of aqueous phase, temperature, and oil types, could affect the demulsification process. It can be concluded that ionic liquids can be used as a suitable substitute for commercial demulsifiers, but future efforts should be required to develop non-toxic and less expensive ionic liquids with low viscosity, and the demulsification efficiency could be improved through the application of ionic liquids with other methods such as organic solvents.
Nahid Hassanshahi; Guangji Hu; Jianbing Li. Application of Ionic Liquids for Chemical Demulsification: A Review. Molecules 2020, 25, 4915 .
AMA StyleNahid Hassanshahi, Guangji Hu, Jianbing Li. Application of Ionic Liquids for Chemical Demulsification: A Review. Molecules. 2020; 25 (21):4915.
Chicago/Turabian StyleNahid Hassanshahi; Guangji Hu; Jianbing Li. 2020. "Application of Ionic Liquids for Chemical Demulsification: A Review." Molecules 25, no. 21: 4915.
A fuzzy decision tree (FDT) based framework was developed to facilitate the selection of suitable oil spill response methods in the Arctic. Hypothetical oil spill cases were developed based on six identified attributes, while the suitability of three spill response methods (mechanical containment and recovery, use of chemical dispersants, and in-situ burning) for each spill case was obtained based on expert judgments. Fuzzy sets were used to address the associated uncertainties, and FDTs were then developed through generating: i) one decision tree for all three response methods (FDT-AP1) and ii) one decision tree for each response method and the development of linear regression models at terminal nodes (FDT-LR). The FDT-LR approach exhibited higher prediction accuracy than the FDT-AP1 approach. A maximum of 100% accurate predictions could be achieved for testing cases using it. On average, 75% of suitable oil spill response methods out of 10,000 performed iterations were predicted correctly.
Guangji Hu; Saeed Mohammadiun; Abdorreza Alavi Gharahbagh; Jianbing Li; Kasun Hewage; Rehan Sadiq. Selection of oil spill response method in Arctic offshore waters: A fuzzy decision tree based framework. Marine Pollution Bulletin 2020, 161, 111705 .
AMA StyleGuangji Hu, Saeed Mohammadiun, Abdorreza Alavi Gharahbagh, Jianbing Li, Kasun Hewage, Rehan Sadiq. Selection of oil spill response method in Arctic offshore waters: A fuzzy decision tree based framework. Marine Pollution Bulletin. 2020; 161 ():111705.
Chicago/Turabian StyleGuangji Hu; Saeed Mohammadiun; Abdorreza Alavi Gharahbagh; Jianbing Li; Kasun Hewage; Rehan Sadiq. 2020. "Selection of oil spill response method in Arctic offshore waters: A fuzzy decision tree based framework." Marine Pollution Bulletin 161, no. : 111705.
This study investigated the Pb(II) and Cd(II) sorption from aqueous solution by oily sludge-derived char (OSDC) prepared at different pyrolysis temperatures and chemical activation. The maximum Pb(II) sorption capacity for OSDC at pyrolysis temperature of 500 °C (OS500) was found as 351.48 mg/g, which was greater than that of OSDC produced at other temperatures. Post-sorption characterizations using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and sequential extraction test indicated the precipitation was the principal mechanism of sorption of Pb(II) onto OSDC prepared at low pyrolysis temperature (≤ 500 °C). The Pb(II) sorption capacity dramatically decreased as the pyrolysis increased from 500 to 900 °C. This is because the alkaline minerals decomposed at high temperature (≥ 700 °C), thereby the mineral precipitation with Pb(II) was inhibited. With increasing pyrolysis temperature from 500 to 900 °C, the contribution of precipitation to Pb(II) sorption decreased from 93.79 to 34.63%, while the contribution of complexation increased from 0 to 44.68%. The sorption capacity of Cd(II) was less than that of Pb(II), and no precipitation was formed during Cd(II) sorption by OSDC. Sorption results showed that OSDC prepared at pyrolysis temperature of 700 °C (OS700) had the best sorption capacity for Cd(II) (92.14 mg/g). The high sorption capacity of OS700 for Cd(II) was mainly attributed to the carboxyl/hydroxyl functional groups and complexation with mineral oxides. The hydrothermal treatment (8M NaOH solution) activated OS500 significantly with respect to surface area, cation exchange capacity (CEC), and total pore volume (PV). The substitution of Pb(II) with alkaline earth metals led to precipitation in the form of hydrocerussite (Pb3(CO3)2(OH)2) that was mainly responsible for Pb(II) sorption on activated OS500 (accounted for 93.79%). The activated OS500 showed a higher sorption capacity (90.06 mg/g) for Cd(II) than OS500 (23.95 mg/g) because the conversion of barite (BaSO4) to witherite (BaCO3) after chemical activation favored the precipitation of Cd carbonate. The contributions of precipitation to the total Cd(II) removal was 0% for OS500 but 76.12% for the activated OS500.
Yuan Tian; Jianbing Li; William B. McGill; Todd W. Whitcombe. Impact of pyrolysis temperature and activation on oily sludge-derived char for Pb(II) and Cd(II) removal from aqueous solution. Environmental Science and Pollution Research 2020, 28, 5532 -5547.
AMA StyleYuan Tian, Jianbing Li, William B. McGill, Todd W. Whitcombe. Impact of pyrolysis temperature and activation on oily sludge-derived char for Pb(II) and Cd(II) removal from aqueous solution. Environmental Science and Pollution Research. 2020; 28 (5):5532-5547.
Chicago/Turabian StyleYuan Tian; Jianbing Li; William B. McGill; Todd W. Whitcombe. 2020. "Impact of pyrolysis temperature and activation on oily sludge-derived char for Pb(II) and Cd(II) removal from aqueous solution." Environmental Science and Pollution Research 28, no. 5: 5532-5547.
The life cycle impacts of treatment of typical oil-based drill cuttings (OBDCs) using three low-temperature thermal desorption (LTTD)-based systems, including thermomechanical cuttings cleaner (TCC), screw-type dryer (STD), and rotary drum dryer (RDD), were explored with a case study in British Columbia, Canada. Two energy supply scenarios, including diesel generator-based onsite (scenario i) and hydropower-based offsite (scenario ii) treatments, were considered in the assessment. The results show that RDD generated the lowest life cycle impacts in terms of damages to human health, ecosystems, and resources in scenario i. TCC-scenario ii generated the lowest impacts among all assessed cases, suggesting that using renewable energy can greatly reduce the impacts of LTTD-based OBDCs treatment. Also, net environmental benefits could be achieved considering the reuse of recovered oil, and the highest net environmental benefits were obtained in TCC-scenario ii. The process contribution analysis found that thermal desorption process accounted for 80 to 95% of impacts in almost all impact categories. Energy consumption contours and linear regression models were also developed to help drilling waste managers estimate the life cycle impacts of using hydropower-driven TCC to treat OBDCs with different water and oil contents.
Guangji Hu; Huan Liu; Anber Rana; Jianbing Li; Saeed Bikass; Kasun Hewage; Rehan Sadiq. Life cycle assessment of low-temperature thermal desorption-based technologies for drill cuttings treatment. Journal of Hazardous Materials 2020, 401, 123865 .
AMA StyleGuangji Hu, Huan Liu, Anber Rana, Jianbing Li, Saeed Bikass, Kasun Hewage, Rehan Sadiq. Life cycle assessment of low-temperature thermal desorption-based technologies for drill cuttings treatment. Journal of Hazardous Materials. 2020; 401 ():123865.
Chicago/Turabian StyleGuangji Hu; Huan Liu; Anber Rana; Jianbing Li; Saeed Bikass; Kasun Hewage; Rehan Sadiq. 2020. "Life cycle assessment of low-temperature thermal desorption-based technologies for drill cuttings treatment." Journal of Hazardous Materials 401, no. : 123865.
To examine the status and risk of heavy metal pollution in an urban wetland in China, the distribution and speciation of chromium (Cr) and other metals (Cd, Cu, Pb, and Zn) were examined. We investigated the impact of three major land uses (residential and industrial (RI), orange plantation (OP), and mixed OP and RI (OPRI)) on the heavy metal characteristics using sediment cores (0–60 cm below water/sediment interface) collected in Sanyang Wetland, China. It was found that all the metals (Cr, Cd, Cu, Pb, and Zn) had lower concentrations in the top layers but higher contents in the bottom layers of sediments. Species of metals in sediments were dominated by their secondary phase (i.e., exchangeable and carbonate bound, Fe-Mn bound and organic bound) with relatively low contents of primary phase (i.e., residual form), except for Cr in RI affected river sediments that had a relatively high content of primary phase (20.97–36.07%). The ratio of secondary phase to primary phase (RSP) and risk assessment code (RAC) methods were applied to assess environmental risk. The results implied that the metal mobility and bioavailability could significantly cause urban wetland environmental quality decline, and thus enhanced strategies should be required to target the capture and removal of metals.
Shuai Shao; Huan Liu; Xiuquan Tai; Feng Zheng; Jianbing Li; Yubao Li. Speciation and migration of heavy metals in sediment cores of urban wetland: bioavailability and risks. Environmental Science and Pollution Research 2020, 27, 23914 -23925.
AMA StyleShuai Shao, Huan Liu, Xiuquan Tai, Feng Zheng, Jianbing Li, Yubao Li. Speciation and migration of heavy metals in sediment cores of urban wetland: bioavailability and risks. Environmental Science and Pollution Research. 2020; 27 (19):23914-23925.
Chicago/Turabian StyleShuai Shao; Huan Liu; Xiuquan Tai; Feng Zheng; Jianbing Li; Yubao Li. 2020. "Speciation and migration of heavy metals in sediment cores of urban wetland: bioavailability and risks." Environmental Science and Pollution Research 27, no. 19: 23914-23925.
We proposed a nutrient‐phytoplankton interaction model with a discrete and distributed time delay to provide a better understanding of phytoplankton growth dynamics and nutrient‐phytoplankton oscillations induced by delay. Standard linear analysis indicated that delay can induce instability of a positive equilibrium via Hopf bifurcation. We derived the conditions guaranteeing the existence of Hopf bifurcation and tracked its direction and the stability of the bifurcating periodic solutions. We also obtained the sufficient conditions for the global asymptotic stability of the unique positive steady state. Numerical analysis in the fully nonlinear regime showed that the stability of the positive equilibrium is sensitive to changes in delay values under select conditions. Numerical results were consistent with results predicted by linear analysis.
Qing Guo; Chuanjun Dai; Hengguo Yu; He Liu; Xiuxiu Sun; Jianbing Li; Min Zhao. Stability and bifurcation analysis of a nutrient‐phytoplankton model with time delay. Mathematical Methods in the Applied Sciences 2019, 43, 3018 -3039.
AMA StyleQing Guo, Chuanjun Dai, Hengguo Yu, He Liu, Xiuxiu Sun, Jianbing Li, Min Zhao. Stability and bifurcation analysis of a nutrient‐phytoplankton model with time delay. Mathematical Methods in the Applied Sciences. 2019; 43 (6):3018-3039.
Chicago/Turabian StyleQing Guo; Chuanjun Dai; Hengguo Yu; He Liu; Xiuxiu Sun; Jianbing Li; Min Zhao. 2019. "Stability and bifurcation analysis of a nutrient‐phytoplankton model with time delay." Mathematical Methods in the Applied Sciences 43, no. 6: 3018-3039.
This study presents a comparative life cycle assessment (LCA) of traditional and emerging treatment approaches for hazardous refinery oily sludge handling. Two traditional oily sludge disposal approaches, including incineration and landfilling, and two emerging energy recovery approaches, including solvent extraction and pyrolysis, were investigated. Life cycle inventories listing all energy and material flows were established for the two emerging treatment approaches, and the life cycle environmental impacts were assessed by following the International Organization for Standardization (ISO) 14040 procedure. The TRACI 2.1 method and Ecoinvent 3 database were used in the LCA. The results show that the two emerging energy recovery approaches only account for <10% of the total impacts posed by the traditional alternatives. Traditional oily sludge treatment approaches are generally associated with relatively high global warming potential, ecotoxicity, and adverse human health effects. Solvent extraction has the lowest total effect on the environment, and the main adverse effects are related to ecotoxicity and fossil fuel depletion. In solvent extraction treatment, vacuum distillation and combustion of recovered oil account for the main impacts. In pyrolysis treatment, processes such as drying, pyrolysis, and combustion of pyrolysis products are the main contributors to the total impact. The energy recovery processes used in the two emerging approaches can significantly offset the total adverse impacts. The two energy recovery approaches have great potential to be used for low-impact oily sludge treatment.
Guangji Hu; Haibo Feng; Pengwei He; Jianbing Li; Kasun Hewage; Rehan Sadiq. Comparative life-cycle assessment of traditional and emerging oily sludge treatment approaches. Journal of Cleaner Production 2019, 251, 119594 .
AMA StyleGuangji Hu, Haibo Feng, Pengwei He, Jianbing Li, Kasun Hewage, Rehan Sadiq. Comparative life-cycle assessment of traditional and emerging oily sludge treatment approaches. Journal of Cleaner Production. 2019; 251 ():119594.
Chicago/Turabian StyleGuangji Hu; Haibo Feng; Pengwei He; Jianbing Li; Kasun Hewage; Rehan Sadiq. 2019. "Comparative life-cycle assessment of traditional and emerging oily sludge treatment approaches." Journal of Cleaner Production 251, no. : 119594.
The objective of this study was to investigate the physicochemical properties of oily sludge-derived char produced from pyrolysis at 500 °C (OS500) and its sorption behavior towards lead (Pb2+) and cadmium (Cd2+) in aqueous solution. The sorption kinetics and isotherm of Pb2+ and Cd2+ sorption on OS500 were determined. The results were fitted with four kinetic (pseudo first order, pseudo second order, Elovich equation, and intraparticle diffusion) and six isotherm (Langmuir, Freundlich, Sips, Redlich-Peterson, Temkin, and Dubinin-Radushkevich) models. The maximum sorption capacity (QL) of Pb2+ obtained from the Langmuir model was 373.2 mg/g, while QL of Cd2+ was 23.19 mg/g. The mechanisms of lead and cadmium sorption on OS500 and their quantitative contributions were further studied by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and sequential extraction test. The results indicated the chemical characteristics (e.g., alkaline minerals and effective cation exchange capacity (CEC)) but not microstructure of OS500 controlled its Pb2+ and Cd2+ sorption. New mineral precipitates (i.e., hydrocerussite (Pb3(CO3)2(OH)2) and cerussite (PbCO3)) formed during Pb2+ sorption. The Pb2+-π interaction and complexation of Cd2+ with hydroxyl functional groups were evidenced by FTIR. Mineral precipitation with Pb2+ was the predominant mechanism for Pb2+ sorption on OS500 (accounted for 93.79%), whereas the complexation dominated Cd2+ sorption (accounted for 84.15%). The OS500 shows application potential in removing heavy metal contaminants from solution, especially Pb2+.
Yuan Tian; Jianbing Li; Todd W. Whitcombe; William B. McGill; Ron Thring. Application of oily sludge-derived char for lead and cadmium removal from aqueous solution. Chemical Engineering Journal 2019, 384, 123386 .
AMA StyleYuan Tian, Jianbing Li, Todd W. Whitcombe, William B. McGill, Ron Thring. Application of oily sludge-derived char for lead and cadmium removal from aqueous solution. Chemical Engineering Journal. 2019; 384 ():123386.
Chicago/Turabian StyleYuan Tian; Jianbing Li; Todd W. Whitcombe; William B. McGill; Ron Thring. 2019. "Application of oily sludge-derived char for lead and cadmium removal from aqueous solution." Chemical Engineering Journal 384, no. : 123386.
A bench-scale apparatus was used for the low-temperature thermal desorption (LTTD) treatment of oil-based drill cuttings (OBDCs). The effects of treatment temperature, treatment duration, sand/OBDCs mixing ratio, and initial oil content on the LTTD treatment performance were investigated. It was found that the petroleum hydrocarbons (PHCs) were barely left in the high-oil-content drill cuttings after LTTD (at 300 °C for 20 min), and thus the overall soil health was improved. The desorption kinetics models of PHCs under various conditions were established, and it was found that the LTTD of OBDCs followed nonlinear least-squares exponential kinetics (adjusted R2 > 0.9). The energy consumption models of LTTD treatment under different temperatures were also developed. The modeling results are of practical guiding significance and useful for designing effective LTTD treatment systems of OBDCs.
Huan Liu; Jianbing Li; Min Zhao; Yubao Li; Yimeng Chen. Remediation of oil-based drill cuttings using low-temperature thermal desorption: Performance and kinetics modeling. Chemosphere 2019, 235, 1081 -1088.
AMA StyleHuan Liu, Jianbing Li, Min Zhao, Yubao Li, Yimeng Chen. Remediation of oil-based drill cuttings using low-temperature thermal desorption: Performance and kinetics modeling. Chemosphere. 2019; 235 ():1081-1088.
Chicago/Turabian StyleHuan Liu; Jianbing Li; Min Zhao; Yubao Li; Yimeng Chen. 2019. "Remediation of oil-based drill cuttings using low-temperature thermal desorption: Performance and kinetics modeling." Chemosphere 235, no. : 1081-1088.
Land use – land cover (LULC) change and the associated risk of soil erosion have become a global environmental concern. We herein presented a geospatial analysis to detect LULC changes (1984-2010) in a Canadian watershed by using object based classification of Landsat satellite images. We found that the watershed experienced a substantial increase in forest clear-cutting and built-up areas. The detected LULC changes were implemented into the Revised Universal Soil Loss Equation (RUSLE) to examine the soil erosion potential. We divided the soil erosion risk into 5 classes ranging from very low (<6 ton ha−1year−1) to severe (33 ton ha−1year−1) levels. The random forest algorithm was then implemented and detected that the topography and LULC conditions of 1999 and 2010 had the most influence on the erosion in 2010. The findings of this study will support efficient LULC management to reduce soil erosion and the consequent degradation of water quality.
Siddhartho Shekhar Paul; Jianbing Li; Yubao Li; Lei Shen. Assessing land use–land cover change and soil erosion potential using a combined approach through remote sensing, RUSLE and random forest algorithm. Geocarto International 2019, 36, 361 -375.
AMA StyleSiddhartho Shekhar Paul, Jianbing Li, Yubao Li, Lei Shen. Assessing land use–land cover change and soil erosion potential using a combined approach through remote sensing, RUSLE and random forest algorithm. Geocarto International. 2019; 36 (4):361-375.
Chicago/Turabian StyleSiddhartho Shekhar Paul; Jianbing Li; Yubao Li; Lei Shen. 2019. "Assessing land use–land cover change and soil erosion potential using a combined approach through remote sensing, RUSLE and random forest algorithm." Geocarto International 36, no. 4: 361-375.
In this paper, a predator–prey system with Crowley–Martin functional response, which is described by a couple of reaction–diffusion equations with impulsive, is studied analytically and numerically. The aim of this research is to analyze how the impulsive effect influences dynamics of the system. Dynamics of the system, including the ultimate boundedness, permanence and extinction, are investigated firstly under impulsive effects. Significantly, it is found that there exists a unique positive periodic solution that is globally asymptotically stable when impulsive effects reach some critical state. Additionally, a series of numerical simulations are carried out to further study the dynamics of the system, which are consistent with the analytical results.
He Liu; Hengguo Yu; Chuanjun Dai; Qi Wang; Jianbing Li; Ravi P. Agarwal; Min Zhao. Dynamic analysis of a reaction–diffusion impulsive hybrid system. Nonlinear Analysis: Hybrid Systems 2019, 33, 353 -370.
AMA StyleHe Liu, Hengguo Yu, Chuanjun Dai, Qi Wang, Jianbing Li, Ravi P. Agarwal, Min Zhao. Dynamic analysis of a reaction–diffusion impulsive hybrid system. Nonlinear Analysis: Hybrid Systems. 2019; 33 ():353-370.
Chicago/Turabian StyleHe Liu; Hengguo Yu; Chuanjun Dai; Qi Wang; Jianbing Li; Ravi P. Agarwal; Min Zhao. 2019. "Dynamic analysis of a reaction–diffusion impulsive hybrid system." Nonlinear Analysis: Hybrid Systems 33, no. : 353-370.
Recyclable magnetic Fe3O4/BiOBr microspheres (m-Fe3O4/BiOBr MSs) were synthesized by a simple solvethermal method. The crystals' optical, morphology, and magnetic properties of m-Fe3O4/BiOBr MSs were characterized using X-ray diffraction, scanning electron microscopy, transmission electron microscopy, energy dispersive analysis of X-rays, UV–vis diffuse reflectance spectroscopy, Brunauer–Emmett–Teller, and vibrating sample magnetometry techniques. An anionic dye, Congo red (CR), was selected as a model pollutant to evaluate the photocatalytic activity of m-Fe3O4/BiOBr MSs under simulated solar light irradiation. By calculation, the pseudo-first-order rate constant for photocatalytic degradation of CR was 0.0011 and 0.0046 min−1 using pure BiOBr MSs and m-Fe3O4/BiOBr MSs, respectively. Enhanced photocatalytic activity of m-Fe3O4/BiOBr MSs can result from superior adsorption and transfer performance to organic contaminants in aqueous system. Both the h+ radicals and O2•− radicals were main active species that drive the photocatalytic decolorization of CR solution by m-Fe3O4/BiOBr MSs. Furthermore, the m-Fe3O4/BiOBr MSs can be easily recovered and recycled after the treatment process because of the presence of magnetic Fe3O4. This work suggests that m-Fe3O4/BiOBr MSs may be a promising photocatalyst for photocatalytic treatment of organic wastewater and other environmental remediation.
Ru Jiang; Hua-Yue Zhu; Shen-Tao Jiang; Yong-Qian Fu; En-Min Zong; Jianbing Li; Guang-Ming Zeng. Magnetically Separable Fe3O4/BiOBr Microspheres: Synthesis, Characterization, and Photocatalytic Performance for Removal of Anionic Azo Dye. Environmental Engineering Science 2019, 36, 466 -477.
AMA StyleRu Jiang, Hua-Yue Zhu, Shen-Tao Jiang, Yong-Qian Fu, En-Min Zong, Jianbing Li, Guang-Ming Zeng. Magnetically Separable Fe3O4/BiOBr Microspheres: Synthesis, Characterization, and Photocatalytic Performance for Removal of Anionic Azo Dye. Environmental Engineering Science. 2019; 36 (4):466-477.
Chicago/Turabian StyleRu Jiang; Hua-Yue Zhu; Shen-Tao Jiang; Yong-Qian Fu; En-Min Zong; Jianbing Li; Guang-Ming Zeng. 2019. "Magnetically Separable Fe3O4/BiOBr Microspheres: Synthesis, Characterization, and Photocatalytic Performance for Removal of Anionic Azo Dye." Environmental Engineering Science 36, no. 4: 466-477.
The treatment of metal-contaminated oily waste was investigated by using an approach of co-pyrolysis with hog fuel in a fixed bed reactor. Both oil recovery and heavy metal immobilization were evaluated. Three experimental factors, including pyrolysis temperature, reaction time, and hog fuel addition in the feedstock, were examined to find their effects on the treatment performance. Metal immobilization in the solid char obtained from co-pyrolysis was examined from its speciation characteristics. A higher pyrolysis temperature led to a decreased oil recovery but more non-bioavailable metal species in the char residue. This is also evident from the calculated risk index (RI) for eco-toxicity assessment, with RI of 34.6 and 117.1 at 600 °C and 400 °C, respectively. The addition of hog fuel into oily waste for co-pyrolysis also led to increased metal immobilization but a decreased overall oil recovery. A low temperature co-pyrolysis (400 °C) by adding 20% of hog fuel was found as the most effective oily waste disposal strategy with satisfactory oil recovery and an acceptable risk index of 54.1.
Yuan Tian; Jianbing Li; Xiuyi Yan; Todd Whitcombe; Ron Thring. Co-pyrolysis of metal contaminated oily waste for oil recovery and heavy metal immobilization. Journal of Hazardous Materials 2019, 373, 1 -10.
AMA StyleYuan Tian, Jianbing Li, Xiuyi Yan, Todd Whitcombe, Ron Thring. Co-pyrolysis of metal contaminated oily waste for oil recovery and heavy metal immobilization. Journal of Hazardous Materials. 2019; 373 ():1-10.
Chicago/Turabian StyleYuan Tian; Jianbing Li; Xiuyi Yan; Todd Whitcombe; Ron Thring. 2019. "Co-pyrolysis of metal contaminated oily waste for oil recovery and heavy metal immobilization." Journal of Hazardous Materials 373, no. : 1-10.