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This study addresses students’ perceptions of using urban green spaces (UGSs) after the easing of COVID-19 lockdown in China. We questioned whether they are still mindful of the risks from the outdoor gathering, or conversely, starting to learn the restoration benefits from the green spaces. Online self-reported surveys were distributed to the Chinese students aging from 14 to 30 who study in Hunan and Jiangsu Provinces, China. We finally obtained 608 complete and valid questionnaire forms from all participants. Their intentions of visiting UGSs were investigated based on the extended theory of planned behavior model. Structural equation modeling was employed to test the hypothesized psychological model. The results have shown good estimation performance on risk perception and perceived knowledge to explain the variances in their attitudes, social norms, and perceived behavior control. Among these three endogenous variables, the perceived behavior control owns the greatest and positive influence on the behavioral intention, inferring that controllability is crucial for students to make decisions of visiting green spaces in a post-pandemic context.
Jiayi Liu; Zhikai Peng; Xiaoxi Cai; You Peng; Jiang Li; Tao Feng. Students’ Intention of Visiting Urban Green Spaces after the COVID-19 Lockdown in China. International Journal of Environmental Research and Public Health 2021, 18, 8601 .
AMA StyleJiayi Liu, Zhikai Peng, Xiaoxi Cai, You Peng, Jiang Li, Tao Feng. Students’ Intention of Visiting Urban Green Spaces after the COVID-19 Lockdown in China. International Journal of Environmental Research and Public Health. 2021; 18 (16):8601.
Chicago/Turabian StyleJiayi Liu; Zhikai Peng; Xiaoxi Cai; You Peng; Jiang Li; Tao Feng. 2021. "Students’ Intention of Visiting Urban Green Spaces after the COVID-19 Lockdown in China." International Journal of Environmental Research and Public Health 18, no. 16: 8601.
Life course events can change household travel demand dramatically. Recent studies of car ownership have examined the impacts of life course events on the purchasing, replacing, and disposing of cars. However, with the increasing diversification of mobility tools, changing the fleet size is not the only option to adapt to the change caused by life course events. People have various options with the development of sustainable mobility tools including electric car, electric bike, and car sharing. In order to determine the impacts of life course events on car ownership and the decision of mobility tool type, a stated choice experiment was conducted. The experiment also investigated how the attributes of mobility tools related to the acceptance of them. Based on existing literature, we identified the attributes of mobility tools and several life course events which are considered to be influential in car ownership decision and new types of mobility tools choice. The error component random parameter logit model was estimated. The heterogeneity across people on current car and specific mobility tools are considered. The results indicate people incline not to sell their current car when they choose an electric bike or shared car. Regarding the life course events, baby birth increases the probability to purchase an additional car, while it decreases the probability to purchase an electric bike or joining a car sharing scheme. Moreover, the estimation of error components implies that there is unobserved heterogeneity across respondents on the sustainable mobility tools choice and the decision on household’s current car.
Gaofeng Gu; Tao Feng; Chixing Zhong; Xiaoxi Cai; Jiang Li. The Effects of Life Course Events on Car Ownership and Sustainable Mobility Tools Adoption Decisions: Results of an Error Component Random Parameter Logit Model. Sustainability 2021, 13, 6816 .
AMA StyleGaofeng Gu, Tao Feng, Chixing Zhong, Xiaoxi Cai, Jiang Li. The Effects of Life Course Events on Car Ownership and Sustainable Mobility Tools Adoption Decisions: Results of an Error Component Random Parameter Logit Model. Sustainability. 2021; 13 (12):6816.
Chicago/Turabian StyleGaofeng Gu; Tao Feng; Chixing Zhong; Xiaoxi Cai; Jiang Li. 2021. "The Effects of Life Course Events on Car Ownership and Sustainable Mobility Tools Adoption Decisions: Results of an Error Component Random Parameter Logit Model." Sustainability 13, no. 12: 6816.
Wetland in the urban or peri-urban areas has been recognized as an important component of urban ecosystems and provides ecological and environmental services. Wetland park emerged as a kind of restoration of natural wetlands in the context of increasing pressure on land and eco-environment caused by urban sprawl, which has played an essential role in providing recreational spaces/opportunities and improving social interactions. However, little research has been conducted on the theoretical formulation elaborating individuals’ perceived quality of wetland parks when people are engaging in activities therein. This study is an attempt to develop a method to measure the quality of wetland parks based on individuals’ various perceptions and attitudes. From the view of human-nature interaction, the perceived quality is hypothetically conceptualized as a composite of two dimensions, such as comfort perception and environmental satisfaction. A series of questionnaire-based surveys were conducted among respondents (N = 936) in Yanghu wetland park in Changsha, China. Based on the measured items from on-site surveys, second-order factor structural equation modeling is applied to estimate the hypothesis of a hierarchical structure for elaborating how the quality of wetland park is perceived by individual respondents. The results test the hypothesis that the quality of wetland park as a second-order theoretical construct can be conceptualized by two first-order theoretical constructs, individuals’ comfort (loading = 0.749), and environmental satisfaction (loading = 0.828). In addition, a significant influence of attitudes toward green space on the perceived quality of wetland park has been identified.
Jiang Li; Qiao Pan; You Peng; Tao Feng; Shaobo Liu; Xiaoxi Cai; Chixing Zhong; Yicheng Yin; Wenbo Lai. Perceived Quality of Urban Wetland Parks: A Second-Order Factor Structure Equation Modeling. Sustainability 2020, 12, 7204 .
AMA StyleJiang Li, Qiao Pan, You Peng, Tao Feng, Shaobo Liu, Xiaoxi Cai, Chixing Zhong, Yicheng Yin, Wenbo Lai. Perceived Quality of Urban Wetland Parks: A Second-Order Factor Structure Equation Modeling. Sustainability. 2020; 12 (17):7204.
Chicago/Turabian StyleJiang Li; Qiao Pan; You Peng; Tao Feng; Shaobo Liu; Xiaoxi Cai; Chixing Zhong; Yicheng Yin; Wenbo Lai. 2020. "Perceived Quality of Urban Wetland Parks: A Second-Order Factor Structure Equation Modeling." Sustainability 12, no. 17: 7204.
Biochar obtained by pyrolysis of the fiber plant kenaf was mixed with bismuth ferrite (BiFeO3) in a chitosan-containing acetic acid solution, magnetized, and modified to prepare a chitosan-crosslinked BiFeO3/biochar coupled magnetic material. The adsorption properties of the composite were investigated using methylene blue dissolved in water, and the effects of external conditions, such as pH, methylene blue concentration, reaction time, and temperature, on the adsorption performance were studied. The adsorption data were fitted and analyzed with kinetic and isotherm models, and the results showed that the BiFeO3/biochar coupled magnetic material effectively adsorbed methylene blue. The amounts adsorbed onto this magnetic material increased with increasing initial methylene blue concentration, reaction time, and temperature, and the adsorption performance improved under neutral and alkaline conditions. The pseudo-first-order kinetic and Langmuir isotherm models satisfactorily fitted the adsorption data, showing that the adsorption of methylene blue involved both chemical and physical adsorption. The maximum adsorption capacity of methylene blue onto the BiFeO3/biochar coupled magnetic material reached 18.942 mg·g−1 at 25 °C, confirming the excellent dye binding activity of this material.
Xiaoxi Cai; Jiang Li; Yunguo Liu; Xinjiang Hu; Xiaofei Tan; Shaobo Liu; Hui Wang; Yanling Gu; Lerong Luo; Liu. Design and Preparation of Chitosan-Crosslinked Bismuth Ferrite/Biochar Coupled Magnetic Material for Methylene Blue Removal. International Journal of Environmental Research and Public Health 2019, 17, 6 .
AMA StyleXiaoxi Cai, Jiang Li, Yunguo Liu, Xinjiang Hu, Xiaofei Tan, Shaobo Liu, Hui Wang, Yanling Gu, Lerong Luo, Liu. Design and Preparation of Chitosan-Crosslinked Bismuth Ferrite/Biochar Coupled Magnetic Material for Methylene Blue Removal. International Journal of Environmental Research and Public Health. 2019; 17 (1):6.
Chicago/Turabian StyleXiaoxi Cai; Jiang Li; Yunguo Liu; Xinjiang Hu; Xiaofei Tan; Shaobo Liu; Hui Wang; Yanling Gu; Lerong Luo; Liu. 2019. "Design and Preparation of Chitosan-Crosslinked Bismuth Ferrite/Biochar Coupled Magnetic Material for Methylene Blue Removal." International Journal of Environmental Research and Public Health 17, no. 1: 6.
A novel graphite-phase carbon nitride (g-C3N4)/bismuth ferrite (BiFeO3)/carbon nanotubes (CNTs) ternary magnetic composite (CNBT) was prepared by a hydrothermal synthesis. Using this material, Cr(VI) and methylene blue (MB) were removed from wastewater through synergistic adsorption and photocatalysis. The effects of pH, time, and pollutant concentration on the photocatalytic performance of CNBT, as well as possible interactions between Cr(VI) and MB species were analyzed. The obtained results showed that CNTs could effectively reduce the recombination rate of electron-hole pairs during the photocatalytic reaction of the g-C3N4/BiFeO3 composite, thereby improving its photocatalytic performance, while the presence of MB increased the reduction rate of Cr(VI). After 5 h of the simultaneous adsorption and photocatalysis by CNBT, the removal rates of Cr(VI) and MB were 93% and 98%, respectively. This study provides a new theoretical basis and technical guidance for the combined application of photocatalysis and adsorption in the treatment of wastewaters containing mixed pollutants.
Huiwen Huo; Xinjiang Hu; Hui Wang; Jiang Li; Guangyu Xie; Xiaofei Tan; Qi Jin; Daixi Zhou; Chuang Li; Guoqiang Qiu; Yunguo Liu. Synergy of Photocatalysis and Adsorption for Simultaneous Removal of Hexavalent Chromium and Methylene Blue by g-C3N4/BiFeO3/Carbon Nanotubes Ternary Composites. International Journal of Environmental Research and Public Health 2019, 16, 3219 .
AMA StyleHuiwen Huo, Xinjiang Hu, Hui Wang, Jiang Li, Guangyu Xie, Xiaofei Tan, Qi Jin, Daixi Zhou, Chuang Li, Guoqiang Qiu, Yunguo Liu. Synergy of Photocatalysis and Adsorption for Simultaneous Removal of Hexavalent Chromium and Methylene Blue by g-C3N4/BiFeO3/Carbon Nanotubes Ternary Composites. International Journal of Environmental Research and Public Health. 2019; 16 (17):3219.
Chicago/Turabian StyleHuiwen Huo; Xinjiang Hu; Hui Wang; Jiang Li; Guangyu Xie; Xiaofei Tan; Qi Jin; Daixi Zhou; Chuang Li; Guoqiang Qiu; Yunguo Liu. 2019. "Synergy of Photocatalysis and Adsorption for Simultaneous Removal of Hexavalent Chromium and Methylene Blue by g-C3N4/BiFeO3/Carbon Nanotubes Ternary Composites." International Journal of Environmental Research and Public Health 16, no. 17: 3219.
The acute toxicity of divalent mercury ion to Anguilla japonica from seawater and freshwater aquaculture was assessed. In particular, the effects of toxicity on the microstructures of the gill and liver tissues were examined using the hydrostatic method, without feeding, at a water temperature of 20 °C. The median lethal concentrations (LC50) of divalent mercury ion to fishes in seawater and freshwater over various durations were: 24 h = 1.637 and 1.428 mg/L; 48 h = 1.562 and 1.377 mg/L; 72 h = 1.530 and 1.284 mg/L; and 96 h = 1.442 and 1.228 mg/L. The safety mass concentrations were 0.1442 and 0.01228 mg/L, respectively. After exposure to divalent mercury ion, adhesion between the gill lamellae and massive cellular disintegration and necrotic shedding were observed in the gill tissue sections. The liver tissues underwent hyperemia and swelling, with the appearance of blood spots, swelling of the hepatocyte mitochondria, dilation of the rough endoplasmic reticulum, and intercellular inflation.
Yuanqiang Tang; Yunguo Liu; Tao Zhang; Jiang Li; Xiaohua Wang; Wei Zhang; Guangming Zeng; Shaobo Liu; Lei Guan. Acute Toxicity of Divalent Mercury Ion to Anguilla japonica from Seawater and Freshwater Aquaculture and Its Effects on Tissue Structure. International Journal of Environmental Research and Public Health 2019, 16, 1965 .
AMA StyleYuanqiang Tang, Yunguo Liu, Tao Zhang, Jiang Li, Xiaohua Wang, Wei Zhang, Guangming Zeng, Shaobo Liu, Lei Guan. Acute Toxicity of Divalent Mercury Ion to Anguilla japonica from Seawater and Freshwater Aquaculture and Its Effects on Tissue Structure. International Journal of Environmental Research and Public Health. 2019; 16 (11):1965.
Chicago/Turabian StyleYuanqiang Tang; Yunguo Liu; Tao Zhang; Jiang Li; Xiaohua Wang; Wei Zhang; Guangming Zeng; Shaobo Liu; Lei Guan. 2019. "Acute Toxicity of Divalent Mercury Ion to Anguilla japonica from Seawater and Freshwater Aquaculture and Its Effects on Tissue Structure." International Journal of Environmental Research and Public Health 16, no. 11: 1965.
Increasingly applications of graphene nanomaterials have resulted in their release into the water environments where lot kinds of chemicals and inorganic nanoparticles co-exist. In this work, the influences of two common inorganic nanoparticles (INPs), namely SiO2 and Al2O3, on the adsorption of 17β-estradiol (E2) onto graphene oxide (GO) were examined by using batch adsorption experiments in combination with microscopic, spectroscopic, and computational methods. Results exhibited that the presence of INPs significantly inhibited the adsorption and increased the time to reach adsorption equilibrium for the adsorption of E2 onto GO. Besides, the impact of Al2O3 was greater than that of SiO2 due to the enhanced electrostatic attraction between positively charged Al2O3 and negatively charged GO. Derjaguin-Landau-Verwey-Overbeek calculation revealed that GO tended to first homoaggregate and then heteroaggregate with SiO2. However, oppositely charged Al2O3 and GO were likely to heteroaggregation rather than homoaggregation. This was also demonstrated by the zeta potential measurement, and scanning electron microscope. These observations highlighted the significant influence of INPs on the adsorption of contaminants onto GO, and also provided new insights into the fate and transport of GO and pollutants in natural water environments.
Luhua Jiang; Yunguo Liu; Guangming Zeng; Shaobo Liu; Wei Que; Jiang Li; Meifang Li; Jun Wen. Adsorption of 17β-estradiol by graphene oxide: Effect of heteroaggregation with inorganic nanoparticles. Chemical Engineering Journal 2018, 343, 371 -378.
AMA StyleLuhua Jiang, Yunguo Liu, Guangming Zeng, Shaobo Liu, Wei Que, Jiang Li, Meifang Li, Jun Wen. Adsorption of 17β-estradiol by graphene oxide: Effect of heteroaggregation with inorganic nanoparticles. Chemical Engineering Journal. 2018; 343 ():371-378.
Chicago/Turabian StyleLuhua Jiang; Yunguo Liu; Guangming Zeng; Shaobo Liu; Wei Que; Jiang Li; Meifang Li; Jun Wen. 2018. "Adsorption of 17β-estradiol by graphene oxide: Effect of heteroaggregation with inorganic nanoparticles." Chemical Engineering Journal 343, no. : 371-378.
This paper comparatively investigated the removal efficiency and mechanisms of rice straw biochars prepared under three pyrolytic temperatures for two kinds of tetracycline and quinolone antibiotics (doxycycline and ciprofloxacin). The influencing factors of antibiotic adsorption (including biochar dosage, pH, background electrolytes, humic acid, initial antibiotics concentration, contact time, and temperature) were comprehensively studied. The results suggest that biochars produced at high-temperature [i.e., 700°C (BC700)], have higher adsorption capacity for the two antibiotics than low-temperature (i.e., 300–500°C) biochars (BC300 and BC500). Higher surface area gives rise to greater volume of micropores and mesopores, and higher graphitic surfaces of the BC700 contributed to its higher functionality. The maximum adsorption capacity was found to be in the following order: DOX > CIP. The π-π EDA interaction and hydrogen bonding might be the predominant adsorption mechanisms. Findings in this study highlight the important roles of high-temperature biochars in controlling the contamination of tetracycline and quinolone antibiotics in the environment.
Zhi-Wei Zeng; Xiao-Fei Tan; Yun-Guo Liu; Si-Rong Tian; Guang-Ming Zeng; Lu-Hua Jiang; Shao-Bo Liu; Jiang Li; Ni Liu; Zhi-Hong Yin. Comprehensive Adsorption Studies of Doxycycline and Ciprofloxacin Antibiotics by Biochars Prepared at Different Temperatures. Frontiers in Chemistry 2018, 6, 80 .
AMA StyleZhi-Wei Zeng, Xiao-Fei Tan, Yun-Guo Liu, Si-Rong Tian, Guang-Ming Zeng, Lu-Hua Jiang, Shao-Bo Liu, Jiang Li, Ni Liu, Zhi-Hong Yin. Comprehensive Adsorption Studies of Doxycycline and Ciprofloxacin Antibiotics by Biochars Prepared at Different Temperatures. Frontiers in Chemistry. 2018; 6 ():80.
Chicago/Turabian StyleZhi-Wei Zeng; Xiao-Fei Tan; Yun-Guo Liu; Si-Rong Tian; Guang-Ming Zeng; Lu-Hua Jiang; Shao-Bo Liu; Jiang Li; Ni Liu; Zhi-Hong Yin. 2018. "Comprehensive Adsorption Studies of Doxycycline and Ciprofloxacin Antibiotics by Biochars Prepared at Different Temperatures." Frontiers in Chemistry 6, no. : 80.
Yi Wu; Wei Que; Yun-Guo Liu; Jiang Li; Li Cao; Shao-Bo Liu; Guang-Ming Zeng; Jing Zhang. Efficiency estimation of urban metabolism via Emergy, DEA of time-series. Ecological Indicators 2018, 85, 276 -284.
AMA StyleYi Wu, Wei Que, Yun-Guo Liu, Jiang Li, Li Cao, Shao-Bo Liu, Guang-Ming Zeng, Jing Zhang. Efficiency estimation of urban metabolism via Emergy, DEA of time-series. Ecological Indicators. 2018; 85 ():276-284.
Chicago/Turabian StyleYi Wu; Wei Que; Yun-Guo Liu; Jiang Li; Li Cao; Shao-Bo Liu; Guang-Ming Zeng; Jing Zhang. 2018. "Efficiency estimation of urban metabolism via Emergy, DEA of time-series." Ecological Indicators 85, no. : 276-284.
Montmorillonite/hydrochar (MMT/HC) with or without modification by KOH via hydrothermal carbonization process (HTC) were applied to remove 17β-estradiol (E2) and 17α-ethynylestradiol (EE2).
Si-Rong Tian; Yun-Guo Liu; Shao-Bo Liu; Guang-Ming Zeng; Lu-Hua Jiang; Xiaofei Tan; Xi-Xian Huang; Zhi-Hong Yin; Ni Liu; Jiang Li. Hydrothermal synthesis of montmorillonite/hydrochar nanocomposites and application for 17β-estradiol and 17α-ethynylestradiol removal. RSC Advances 2018, 8, 4273 -4283.
AMA StyleSi-Rong Tian, Yun-Guo Liu, Shao-Bo Liu, Guang-Ming Zeng, Lu-Hua Jiang, Xiaofei Tan, Xi-Xian Huang, Zhi-Hong Yin, Ni Liu, Jiang Li. Hydrothermal synthesis of montmorillonite/hydrochar nanocomposites and application for 17β-estradiol and 17α-ethynylestradiol removal. RSC Advances. 2018; 8 (8):4273-4283.
Chicago/Turabian StyleSi-Rong Tian; Yun-Guo Liu; Shao-Bo Liu; Guang-Ming Zeng; Lu-Hua Jiang; Xiaofei Tan; Xi-Xian Huang; Zhi-Hong Yin; Ni Liu; Jiang Li. 2018. "Hydrothermal synthesis of montmorillonite/hydrochar nanocomposites and application for 17β-estradiol and 17α-ethynylestradiol removal." RSC Advances 8, no. 8: 4273-4283.
Rice straw biochar that produced at three pyrolysis temperatures (400, 500 and 600 °C) were used to investigate the adsorption properties of 17β-estradiol (E2). The biochar samples were characterized by scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FTIR), elemental analysis and BET surface area measurements. The influences of pyrolysis temperature, E2 concentration, pH, ionic strength, background electrolyte and humic acid were studied. Kinetic and isotherm results illustrated that the adsorption process could be well described by pseudo-second-order and Freundlich models. Experimental results showed that ionic strength had less influence on the adsorption of E2 by 500 and 600 °C rice straw biochar. Further, multivalent ions had positive impact on E2 removal than monovalent ions and the influence of the pyrolysis temperature was unremarkable when background electrolyte existed in solutions. The adsorption capacity of E2 decreased with the pH ranged from 3.0 to 12.0 and the humic acid concentration from 2 to 10 mg L–1. Electrostatic attractions and π-π interaction were involved in the adsorption mechanisms. Compared to low-temperature biochar, high-temperature biochar exhibited a better adsorption capacity for E2 in aqueous solution, indicated it had a greater potential for E2 pollution control.
Xiaohua Wang; Ni Liu; Yunguo Liu; Luhua Jiang; Guangming Zeng; Xiaofei Tan; Shaobo Liu; Zhihong Yin; Sirong Tian; Jiang Li. Adsorption Removal of 17β-Estradiol from Water by Rice Straw-Derived Biochar with Special Attention to Pyrolysis Temperature and Background Chemistry. International Journal of Environmental Research and Public Health 2017, 14, 1213 .
AMA StyleXiaohua Wang, Ni Liu, Yunguo Liu, Luhua Jiang, Guangming Zeng, Xiaofei Tan, Shaobo Liu, Zhihong Yin, Sirong Tian, Jiang Li. Adsorption Removal of 17β-Estradiol from Water by Rice Straw-Derived Biochar with Special Attention to Pyrolysis Temperature and Background Chemistry. International Journal of Environmental Research and Public Health. 2017; 14 (10):1213.
Chicago/Turabian StyleXiaohua Wang; Ni Liu; Yunguo Liu; Luhua Jiang; Guangming Zeng; Xiaofei Tan; Shaobo Liu; Zhihong Yin; Sirong Tian; Jiang Li. 2017. "Adsorption Removal of 17β-Estradiol from Water by Rice Straw-Derived Biochar with Special Attention to Pyrolysis Temperature and Background Chemistry." International Journal of Environmental Research and Public Health 14, no. 10: 1213.
BACKGROUND Antibiotics are widely used for the treatment of bacterial infections in humans and animals, but it can be released into water sources due to incomplete metabolism in humans or via discharge from drug manufacturers. RESULTS The efficiency of removal of three antibiotics was enhanced with increasing biochar dosage. The adsorption of three antibiotics by RH700 was much higher than by RH300 and RH500, which might be due to the larger surface area and adsorption pore volume of RH700 (211.76 m2 g‐1 and 6.25 nm, respectively). In addition, the adsorption capacity was greatly affected by the solution pH, background electrolyte and humic acid. The kinetics experiment data were well fitted by the pseudo‐second‐order kinetic model. The maximum adsorption capacities of tetracycline hydrochloride (TC), doxycycline hydrochloride (DC) and ciprofloxacin (CF) based on the Langmuir model by RH700 at 318 K were 80.9, 85.2 and 36.1 mg g‐1, respectively. RH700 exhibited high affinity for antibiotics, mainly ascribed to the chemical interaction between oxygen‐containing functional groups (phenolic hydroxyl group, carboxyl and alkoxy groups) of the biochar surface and TC, DC and CF. CONCLUSION The rice husk biochar produced at high temperature could be applied as a potential adsorbent for removal of antibiotics from water. © 2017 Society of Chemical Industry
Zhi-Wei Zeng; Si-Rong Tian; Yun-Guo Liu; Xiao-Fei Tan; Guang-Ming Zeng; Lu-Hua Jiang; Zhi-Hong Yin; Ni Liu; Shao-Bo Liu; Jiang Li. Comparative study of rice husk biochars for aqueous antibiotics removal. Journal of Chemical Technology & Biotechnology 2017, 93, 1075 -1084.
AMA StyleZhi-Wei Zeng, Si-Rong Tian, Yun-Guo Liu, Xiao-Fei Tan, Guang-Ming Zeng, Lu-Hua Jiang, Zhi-Hong Yin, Ni Liu, Shao-Bo Liu, Jiang Li. Comparative study of rice husk biochars for aqueous antibiotics removal. Journal of Chemical Technology & Biotechnology. 2017; 93 (4):1075-1084.
Chicago/Turabian StyleZhi-Wei Zeng; Si-Rong Tian; Yun-Guo Liu; Xiao-Fei Tan; Guang-Ming Zeng; Lu-Hua Jiang; Zhi-Hong Yin; Ni Liu; Shao-Bo Liu; Jiang Li. 2017. "Comparative study of rice husk biochars for aqueous antibiotics removal." Journal of Chemical Technology & Biotechnology 93, no. 4: 1075-1084.
BACKGROUND This article reports the synthesis and characterisation of titanium dioxide‐coated biochar composites (TBCs) by pyrolysing titanium dioxide‐treated biomass prepared by a modified sol–gel method. Their adsorptive and photocatalytic activities were evaluated based on the removal of safranine T (ST) from an aqueous solution with/without UV‐light irradiation. RESULTS Characterisation studies suggested that TiO2 was successfully loaded on the biochar substrate. The biochar and TiO2 contents of the composite significantly affected its performance. The ST removal capabilities of the TBCs with 1, 1.5, 2, and 2.5 g of the biomass are 1.7, 2.3, 7.2, and 2.3 times better than that of the raw biochar, respectively. Thus, the optimum amount of biomass in TBC‐x was determined to be 2 g, with the corresponding sample exhibiting excellent stability, effectiveness over a wide pH range, and a maximum ST removal capacity of 226.7 mg g‐1. CONCLUSION The loading of TiO2 significantly enhanced the adsorption performance of biochar and the high specific surface area of the biochar synergistically promoted the photocatalytic activity of TiO2. Both adsorption and photocatalytic degradation were confirmed to contribute to the decolourisation of the aqueous solution because of the removal of ST, with the effect of adsorption being slightly higher than that of photocatalysis. The synthesised composite is a promising alternative material for removing chemical contaminants. © 2017 Society of Chemical Industry
Xiaoxi Cai; Jiang Li; Yunguo Liu; Zhili Yan; Xiaofei Tan; Shaobo Liu; Guangming Zeng; Yanling Gu; Xinjiang Hu; Luhua Jiang. Titanium dioxide‐coated biochar composites as adsorptive and photocatalytic degradation materials for the removal of aqueous organic pollutants. Journal of Chemical Technology & Biotechnology 2017, 93, 783 -791.
AMA StyleXiaoxi Cai, Jiang Li, Yunguo Liu, Zhili Yan, Xiaofei Tan, Shaobo Liu, Guangming Zeng, Yanling Gu, Xinjiang Hu, Luhua Jiang. Titanium dioxide‐coated biochar composites as adsorptive and photocatalytic degradation materials for the removal of aqueous organic pollutants. Journal of Chemical Technology & Biotechnology. 2017; 93 (3):783-791.
Chicago/Turabian StyleXiaoxi Cai; Jiang Li; Yunguo Liu; Zhili Yan; Xiaofei Tan; Shaobo Liu; Guangming Zeng; Yanling Gu; Xinjiang Hu; Luhua Jiang. 2017. "Titanium dioxide‐coated biochar composites as adsorptive and photocatalytic degradation materials for the removal of aqueous organic pollutants." Journal of Chemical Technology & Biotechnology 93, no. 3: 783-791.
In this work, Fe–Mn binary oxide modified hydrochar (hydrochar-FMBO) was successfully prepared by deposition of Fe–Mn binary oxide (FMBO) nanoparticles on pristine hydrochar.
Qimeng Ning; Yunguo Liu; Shaobo Liu; Luhua Jiang; Guangming Zeng; Zhiwei Zeng; Xiaohua Wang; Jiang Li; Zulhumar Kare. Fabrication of hydrochar functionalized Fe–Mn binary oxide nanocomposites: characterization and 17β-estradiol removal. RSC Advances 2017, 7, 37122 -37129.
AMA StyleQimeng Ning, Yunguo Liu, Shaobo Liu, Luhua Jiang, Guangming Zeng, Zhiwei Zeng, Xiaohua Wang, Jiang Li, Zulhumar Kare. Fabrication of hydrochar functionalized Fe–Mn binary oxide nanocomposites: characterization and 17β-estradiol removal. RSC Advances. 2017; 7 (59):37122-37129.
Chicago/Turabian StyleQimeng Ning; Yunguo Liu; Shaobo Liu; Luhua Jiang; Guangming Zeng; Zhiwei Zeng; Xiaohua Wang; Jiang Li; Zulhumar Kare. 2017. "Fabrication of hydrochar functionalized Fe–Mn binary oxide nanocomposites: characterization and 17β-estradiol removal." RSC Advances 7, no. 59: 37122-37129.
Synthesizing biochar-based nano-composites can obtain new composites and combine the advantages of biochar with nano-materials. The resulting composites usually exhibit great improvement in functional groups, pore properties, surface active sites, catalytic degradation ability and easy to separation. These composites have excellent abilities to adsorb a range of contaminants from aqueous solutions. Particularly, catalytic material-coated biochar can exert simultaneous adsorption and catalytic degradation function for organic contaminants removal. Synthesizing biochar-based nano-composites has become an important practice for expanding the environmental applications of biochar and nanotechnology. This paper aims to review and summarize the various synthesis techniques for biochar-based nano-composites and their effects on the decontamination of wastewater. The characteristic and advantages of existing synthesis methods are summarized and discussed. Application of biochar-based nano-composites for different contaminants removal and the underlying mechanisms are reviewed. Furthermore, knowledge gaps that exist in the fabrication and application of biochar-based nano-composites are also identified.
Xiaofei Tan; Yun-Guo Liu; Yan-Ling Gu; Yan Xu; Guang-Ming Zeng; Xin-Jiang Hu; Shao-Bo Liu; Xin Wang; Si-Mian Liu; Jiang Li. Biochar-based nano-composites for the decontamination of wastewater: A review. Bioresource Technology 2016, 212, 318 -333.
AMA StyleXiaofei Tan, Yun-Guo Liu, Yan-Ling Gu, Yan Xu, Guang-Ming Zeng, Xin-Jiang Hu, Shao-Bo Liu, Xin Wang, Si-Mian Liu, Jiang Li. Biochar-based nano-composites for the decontamination of wastewater: A review. Bioresource Technology. 2016; 212 ():318-333.
Chicago/Turabian StyleXiaofei Tan; Yun-Guo Liu; Yan-Ling Gu; Yan Xu; Guang-Ming Zeng; Xin-Jiang Hu; Shao-Bo Liu; Xin Wang; Si-Mian Liu; Jiang Li. 2016. "Biochar-based nano-composites for the decontamination of wastewater: A review." Bioresource Technology 212, no. : 318-333.
Aquatic macrophytes are considered to be promising in controlling harmful cyanobacterial blooms. In this research, an aqueous extract of Sagittaria trifolia tubers was prepared to study its inhibitory effect on Microcystis aeruginosa in the laboratory. Several physiological indices of M. aeruginosa, in response to the environmental stress, were analyzed. Results showed that S. trifolia tuber aqueous extract significantly inhibited the growth of M. aeruginosa in a concentration-dependent way. The highest inhibition rate reached 90% after 6 day treatment. The Chlorophyll-a concentration of M. aeruginosa cells decreased from 343.1 to 314.2 μg/L in the treatment group. The activities of superoxide dismutase and peroxidase and the content of reduced glutathione in M. aeruginosa cells initially increased as a response to the oxidative stress posed by S. trifolia tuber aqueous extract, but then decreased as time prolonged. The lipid peroxidation damage of the cyanobacterial cell membranes was reflected by the malondialdehyde level, which was notably higher in the treatment group compared with the controls. It was concluded that the oxidative damage of M. aeruginosa induced by S. trifolia tuber aqueous extract might be one of the mechanisms for the inhibitory effects.
Jiang Li; Yunguo Liu; Pingyang Zhang; Guangming Zeng; Xiaoxi Cai; Shaobo Liu; Yicheng Yin; Xinjiang Hu; Xi Hu; Xiaofei Tan. Growth inhibition and oxidative damage of Microcystis aeruginosa induced by crude extract of Sagittaria trifolia tubers. Journal of Environmental Sciences 2016, 43, 40 -47.
AMA StyleJiang Li, Yunguo Liu, Pingyang Zhang, Guangming Zeng, Xiaoxi Cai, Shaobo Liu, Yicheng Yin, Xinjiang Hu, Xi Hu, Xiaofei Tan. Growth inhibition and oxidative damage of Microcystis aeruginosa induced by crude extract of Sagittaria trifolia tubers. Journal of Environmental Sciences. 2016; 43 ():40-47.
Chicago/Turabian StyleJiang Li; Yunguo Liu; Pingyang Zhang; Guangming Zeng; Xiaoxi Cai; Shaobo Liu; Yicheng Yin; Xinjiang Hu; Xi Hu; Xiaofei Tan. 2016. "Growth inhibition and oxidative damage of Microcystis aeruginosa induced by crude extract of Sagittaria trifolia tubers." Journal of Environmental Sciences 43, no. : 40-47.
A Cd-tolerant plant species named Boehmeria nivea (L.) Gaudich (ramie) was applied to study its Cd accumulation and translocation mechanisms with the addition of ethylene diamine tetracetic acid (EDTA) or nitrilotriacetic acid (NTA).
Yicheng Yin; Yaqin Wang; Yunguo Liu; Guangming Zeng; Xinjiang Hu; Xi Hu; Lu Zhou; Yiming Guo; Jiang Li. Cadmium accumulation and apoplastic and symplastic transport in Boehmeria nivea (L.) Gaudich on cadmium-contaminated soil with the addition of EDTA or NTA. RSC Advances 2015, 5, 47584 -47591.
AMA StyleYicheng Yin, Yaqin Wang, Yunguo Liu, Guangming Zeng, Xinjiang Hu, Xi Hu, Lu Zhou, Yiming Guo, Jiang Li. Cadmium accumulation and apoplastic and symplastic transport in Boehmeria nivea (L.) Gaudich on cadmium-contaminated soil with the addition of EDTA or NTA. RSC Advances. 2015; 5 (59):47584-47591.
Chicago/Turabian StyleYicheng Yin; Yaqin Wang; Yunguo Liu; Guangming Zeng; Xinjiang Hu; Xi Hu; Lu Zhou; Yiming Guo; Jiang Li. 2015. "Cadmium accumulation and apoplastic and symplastic transport in Boehmeria nivea (L.) Gaudich on cadmium-contaminated soil with the addition of EDTA or NTA." RSC Advances 5, no. 59: 47584-47591.
To overcome the limitation of powder TiO2, the TiO2-impregnated glutaraldehyde-crosslinked alginate beads (TIGCAB) were prepared. The TIGCAB were characterized by DC, DBM, SEM, BET, XRD, Raman and TG. These synthesized beads were applied to reduce toxic Cr(VI) to Cr(III) in acidic aqueous solution under UV irradiation. In the system without TIGCAB or UV light, no chromium reduction was observed. The reduction rate of Cr(VI) was about 8% when the system was exposed to UV irradiation with blank beads. Photoreduction rate of Cr(VI) decreased with increasing pH. The reduction efficiency of Cr(VI) decreased with the increase of initial Cr(VI) concentration in the range of 5–20 mg L−1. Fe(III) ions improved the photoreduction of Cr(VI) because they can promote the trapping of electrons and holes. Moreover, TIGCAB can maintain full photoreduction activity for at least three cycles. The results show that TIGCAB are promising materials for the photoreduction of Cr(VI) from acidic aqueous solution in environmental pollution cleanup.
Yun-Guo Liu; Xin-Jiang Hu; Hui Wang; An-Wei Chen; Si-Mian Liu; Yi-Ming Guo; Yuan He; Xi Hu; Jiang Li; Shao-Heng Liu; Ya-Qin Wang; Lu Zhou. Photoreduction of Cr(VI) from acidic aqueous solution using TiO2-impregnated glutaraldehyde-crosslinked alginate beads and the effects of Fe(III) ions. Chemical Engineering Journal 2013, 226, 131 -138.
AMA StyleYun-Guo Liu, Xin-Jiang Hu, Hui Wang, An-Wei Chen, Si-Mian Liu, Yi-Ming Guo, Yuan He, Xi Hu, Jiang Li, Shao-Heng Liu, Ya-Qin Wang, Lu Zhou. Photoreduction of Cr(VI) from acidic aqueous solution using TiO2-impregnated glutaraldehyde-crosslinked alginate beads and the effects of Fe(III) ions. Chemical Engineering Journal. 2013; 226 ():131-138.
Chicago/Turabian StyleYun-Guo Liu; Xin-Jiang Hu; Hui Wang; An-Wei Chen; Si-Mian Liu; Yi-Ming Guo; Yuan He; Xi Hu; Jiang Li; Shao-Heng Liu; Ya-Qin Wang; Lu Zhou. 2013. "Photoreduction of Cr(VI) from acidic aqueous solution using TiO2-impregnated glutaraldehyde-crosslinked alginate beads and the effects of Fe(III) ions." Chemical Engineering Journal 226, no. : 131-138.