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The non-negligible environmental risk of recycling halogenated flame retardants associated with plastic regeneration in China

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Science of the Total environment 2019年 646卷 1090-1096页

作者： Cao, Zhiguo Chen, Qiaoying Li, Xiaoxiao Zhang, Yacai Ren, Meihui Sun, Lifang Wang, Mengmeng Liu, Xiaotu Yu, Gang Ministry of Education Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control School of Environment Henan Normal University Xinxiang 453007 Henan China Beijing Key Laboratory for Emerging Organic Contaminants Control State Key Joint Laboratory of Environment Simulation and Pollution Control (SKLESPC) School of Environment Tsinghua University Beijing 100084 China School of Environment Jinan University Guangzhou 510632 Guangdong China

To investigate halogenated flame retardant (HFR) contents in recycled plastic materials, 23 recycled plastic samples manufactured in five Chinese provinces were randomly purchased online, and the ∑12HFR concentrations of these samples (including 8 polybrominated diphenyl ethers (PBDEs, BDE 28, 47, 99, 100, 154, 153, 183 and 209), decabromodiphenylethane (DBDPE), 1,2-bis(2,4,6-tribromophenoxy)ethane (BTBPE), and 2 dechlorane plus isomers (DP, syn-DP and anti-DP)) varied from ND to 169,000 ng g⁻¹ (mean ± SD, 46,900 ± 44,700 ng g⁻¹). BDE 209 and DBDPE were the dominant components and their concentration ranges were from ND to 106,000 ng g⁻¹ and ND to 81,900 ng g⁻¹, respectively. Generally, the HFR content and plastic variety closely correlate, and the ∑HFR concentrations in the polyvinyl chloride (PVC, N = 5), polypropylene (PP, N = 9), acrylonitrile butadiene styrene (ABS, N = 5), polystyrene (PS, N = 1) and polyethylene (PE, N = 3) samples were 65,300 ± 42,400, 36,700 ± 56,000, 30,000 ± 25,200, 24,300 and 4330 ± 7500 ng g⁻¹, respectively. The HFR abundance in plastic from Guangdong (76,000 ± 56,400 ng g⁻¹, N = 7) and Hebei (37,500 ± 11,500 ng g⁻¹, N = 4) was much higher than that for other provinces/cities. © 2018

关键词： environmental risk Halogenated flame retardants Plastic Recycling

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Correction: Iron-based clusters embedded in nitrogen doped activated carbon catalysts with superior cathodic activity in microbial fuel cells

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Journal of Materials Chemistry A 2020年第21期8卷 11056-11057页

作者： Xiaoyuan Zhang Xingguo Guo Qiuying Wang Rufan Zhang Ting Xu Peng Liang Xia Huang State Key Joint Laboratory of Environment Simulation and Pollution Control School of Environment Tsinghua University Beijing 100084 China Department of Chemical Engineering Tsinghua University Beijing 100084 China

Correction for ‘Iron-based clusters embedded in nitrogen doped activated carbon catalysts with superior cathodic activity in microbial fuel cells’ by Xiaoyuan Zhang et al., J. Mater. Chem. A, 2020, DOI: 10.1039/C9TA...

Correction for ‘Iron-based clusters embedded in nitrogen doped activated carbon catalysts with superior cathodic activity in microbial fuel cells’ by Xiaoyuan Zhang et al., J. Mater. Chem. A, 2020, DOI: 10.1039/C9TA10797E.

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Source attribution for mercury deposition with an updated atmospheric mercury emission inventory in the Pearl River Delta Region, China

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Frontiers of environmental Science & Engineering 2019年第1期13卷 39-52页

作者： Jiajun Liu Long Wang Yun Zhu Che-Jen Lin Carey Jang Shuxiao Wang Jia Xing Bin Yu Hui Xu Yuzhou Pan Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control College of Environment and Energy South ChinaUniversity of Technology Guangzhou Higher Education Mega Center Guangzhou 510006 China Department of Civil and Environmental Engineering Lamar University Beaumont TX 77710 USA US EPA Office of Air Quality Planning & Standards Res Triangle Park NC 27711 USA State Key Joint Laboratory of Environment Simulation and Pollution Control School of Environment. Tsinghua University Beijing 100084 China Guangzhou Environmental Monitoring Centre Guangzhou 510030 China

We used CMAQ-Hg to simulate mercury pollution and identify main sources in the Pearl River Delta (PR.D) with updated local emission inventory and latest regional and global emissions. The total anthropogenic mercury emissions in the PRD for 2014 were 11,939.6 kg. Power plants and industrial boilers were dominant sectors, responsible for 29.4 and 22.7%. We first compared model predictions and observations and the results showed a good performance. Then five scenarios with power plants (PP), municipal solid waste incineration (MSWI), industrial point sources (IP), natural sources (NAT), and boundary conditions (BCs) zeroed out separately were simulated and compared with the base case. BCs was responsible for over 30% of annual average mercury concentration and total deposition while NAT contributed around 15%. Among the anthropogenic sources, IP (22.9%) was dominant with a contribution over 20.0% and PP (18.9%) and MSWI (11.2%) ranked second and third. Results also showed that power plants were the most important emission sources in the central PRD, where the ultra-low emission for thermal power units need to be strengthened. In the northern and western PRD, cement and metal productions were priorities for mercury control. The fast growth of municipal solid waste incineration were also a key factor in the core areas. In addition, a coordinated regional mercury emission control was important for effectively controlling pollution. In the future, mercury emissions will decrease as control measures are strengthened, more attention should be paid to mercury deposition around the large point sources as high levels of pollution are observed.

关键词： Emission inventory Mercury deposition Pearl River Delta (PRD) Source attribution control strategy

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Highly active and selective sandwich-like SiO 2 @Cu-Fe@H-SiO 2 catalysts for CO 2 upgrading via reverse water-gas shift: The effect of Fe doping position

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Journal of environmental Chemical Engineering 2025年第4期13卷

作者： Xiaoyu Liang Feng Yan Hanjun Liu Feng Xie Yixuan Lu Linying Huang Xuehua Shen Zuotai Zhang School of Environmental Science and Engineering Shenzhen Key Laboratory of Municipal Solid Waste Recycling Technology and Management Southern University of Science and Technology Shenzhen 518055 China Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control Southern University of Science and Technology Shenzhen 518055 China DeCarbon Technology (Shenzhen) Co. Ltd. Shenzhen 518055 China Shenzhen Energy Environment Co. Ltd. Shenzhen 518055 China

The reverse water-gas shift (RWGS) reaction plays an important role for converting the greenhouse gas CO 2 and renewable H 2 into liquid hydrocarbons under moderate conditions. Yet, the development of low-temperature RWGS catalysts remains a significant challenge, considering the CO 2 conversion, CO selectivity, long-term stability. This study presents a novel strategy to encapsulate the Cu-Fe nanoclusters within a hollow silica shell, addressing the key challenges of low-temperature activity and sintering resistance. The synthesized SiO 2 @Cu-Fe@H-SiO 2 catalyst achieved superior RWGS performance, with CO 2 conversion reaching 50.7 % at 500°C (30,000 mL·gcat⁻¹·h⁻¹, H 2 /CO 2 = 4:1) and nearly 100 % CO selectivity maintained over a wide temperature range (300°C–750°C). Stability tests under stringent conditions confirmed the remarkable durability of the catalyst during a continuous 100-h run. Based on the serials of characterization, the innovative sandwich-like SiO 2 @Cu-Fe@H-SiO 2 nanostructure significantly enhanced the metal dispersion and prevented agglomeration under the demanding reaction conditions; meanwhile, the introduction of Fe improved the Cu-Fe interfacial interactions and enhanced the surface basicity, which was critical for activating CO 2 molecule and improving catalytic efficiency. Comparative analysis reveals that this system outperformed many state-of-the-art RWGS catalysts, offering competitive activity and selectivity while being economically viable due to its noble-metal-free composition. This work underscores the potential of encapsulation strategy in designing high-performance, sintering-resistant catalysts for CO 2 utilization, paving the way for scalable and sustainable CO production from CO 2 and renewable hydrogen under mild conditions.

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Ozonation as an efficient pretreatment method to alleviate reverse osmosis membrane fouling caused by complexes of humic acid and calcium ion

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Frontiers of environmental Science & Engineering 2019年第4期13卷 89-100页

作者： Xuehao Zhao Yinhu Wu Xue Zhang Xin Tong Tong Yu Yunhong Wang Nozomu Ikuno Kazuki Ishii Hongying Hu Environmental Simulation and Pollution Control State Key Joint Laboratory State Environmental Protection Key Laboratory of Microorganism Application and Risk Control (SMARC)School of EnvironmentTsinghua UniversityBeijing 100084China Collaborative Innovation Center for Advanced Nuclear Energy Technology Institute of Nuclear and New Energy TechnologyTsinghua UniversityBeijing 100084China Kurita Water Industries Ltd. Nakano-kuTokyo 164-0001Japan Shenzhen Environmental Science and New Energy Technology Engineering Laboratory Tsinghua-Berkeley Shenzhen InstituteShenzhen 518055China

Humic acid has been considered as one of the most significant sources in feed water causing organic fouling of reverse osmosis (RO) membranes, but the relationship between the fouling behavior of humic acid and the change of its molecular structure has not been well developed yet. In this study, the RO membrane fouling behavior of humic acid was studied systematically with ozonation as a pretreatment method to control RO membrane fouling. Furthermore, the effect of ozone on the structure ofhumic acid was also explored to reveal the mechanisms. Humic acid alone (10-90 mg/L, in deionized water) was found not to cause obvious RO membrane fouling in 45-h operation. However, the presence of Ca^2+ aggravated significantly the RO membrane fouling caused by humic acid, with significant flux reduction and denser fouling layer on RO membrane, as it was observed by scanning electron microscope (SEM) and atomic force microscope (AFM). However, after the pretreatment by ozone, the influence of Ca^2+ was almost eliminated. Further analysis revealed that the addition of Ca^2+ increased the particle size of humic acid solution significantly, while ozonation reduced the SUVA254, particle size and molecular weight of the complexes of humic acid and Ca^2+(HA-Ca^2+ complexes). According to these results and literature, the bridge effect of Ca^2+ aggregating humic acid molecules and the cleavage effect of ozone breaking HA-Ca^2+ complexes were summarized. The change of the structure of humic acid under the effect of Ca^2+ and ozone is closely related to the change of its membrane fouling behavior.

关键词： Reverse osmosis Membrane fouling Humic acid Ca^2+ Ozone

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Benthic bioturbations weaken the stability of blue carbon storage

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National Science Open 2025年第2期4卷 205-218页

作者： Yingrong Huang Peng Zhang He-Bo Peng Feng Pan Yan Liu Kai Wang Yu Cai Jianyu Wang Zhenyan Wang Chunmiao Zheng Hailong Li Ding He Junjian Wang Chenyuan Dang Pengbao Wu Ji Chen Damien Maher Kai Xiao School of Environmental Science and Engineering Southern University of Science and TechnologyShenzhen 518055China Guangdong Provincial Key Laboratory of Water Quality Improvement and Ecological Restoration for Watersheds Institute of Environmental and Ecological EngineeringGuangdong University of TechnologyGuangzhou 510006China Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems Fujian Key Laboratory of Coastal Pollution Prevention and ControlCollege of the Environment&EcologyXiamen UniversityXiamen 361102China Department of Ocean Science and Engineering Southern University of Science and TechnologyShenzhen 318055China Center for Turbulence Research Stanford UniversityStanfordCA 94305USA Eastern Institute for Advanced Study Eastern Institute of TechnologyNingbo 315200China Department of Ocean Science and Center for Ocean Research in Hong Kong and MacaoThe Hong Kong University of Science and TechnologyHong Kong 999077China Hubei Key Laboratory of Multi-Media Pollution Cooperative Control in Yangtze Basin School of Environmental Science&EngineeringHuazhong University of Science and TechnologyWuhan 430074China School of Geography and Tourism Huizhou UniversityHuizhou 516007China State Key Laboratory of Loess and Quaternary Geology Institute of Earth EnvironmentChinese Academy of SciencesXi’an 710061China Faculty of Science and Engineering Southern Cross UniversityLismoreNew South Wales 2480Australia CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation Yantai Institute of Coastal Zone ResearchChinese Academy of SciencesYantai 264003China

Coastal ecosystems are known for their ability to sequester organic carbon(OC),termed“blue carbon”.The molecular composition of dissolved organic matter(DOM)can affect sediment OC content;however,the impact of benthic bioturbation on DOM properties and OC storage stability is not well *** study examined the effects of bio-turbation by fiddler crabs on DOM molecular properties and OC storage stability along the Chinese *** findings indicate that crab bioturbation enhanced the release of labile molecules by 59%on *** increase is controlled by the coupling reactions of iron and manganese minerals,and is influenced by climatic ***,fiddler crab bioturbation diminishes the durability of blue carbon storage,with the most significant effects observed in mangrove forests,followed by bare mudflats,tidal creek banks,and *** results underscore the critical role of benthic bioturbation in global blue carbon budgets.

关键词： blue carbon crab bioturbation Fe and Mn minerals climate change molecular level continental scale

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Numerical simulation of Tidal Beach Seawater-Groundwater Circulations Using Dimensionless Method

SSRN

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SSRN 2024年

作者： Wang, Wei Cui, Laitong Geng, Xiaolong Luo, Manhua Yu, Shengchao Wang, Qianqian Li, Hailong School of Environmental Science and Engineering Southern University of Science and Technology Shenzhen518055 China State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control School of Environmental Science and Engineering Southern University of Science and Technology Shenzhen China School of Water Resources and Environment China University of Geosciences-Beijing Beijing100083 China Department of Earth Sciences University of Hawai‘i at Mānoa HonoluluHI96822 United States Water Resources Research Center University of Hawai‘i at Mānoa HonoluluHI96822 United States Department of Civil and Resource Engineering Center for Water Resources Studies Dalhousie University HalifaxNS Canada State Key Laboratory of Estuarine and Coastal Research East China Normal University Shanghai China

Our previous study developed a dimensionless model to quantify seawater-groundwater circulations in tidally influenced beach systems, wherein the model parameters were non-dimensionalized. Although the model can be reasonably transformed to apply to various dimensionalized beach domains with slopes ranging from 3.16% to 31.6%, the model was limited by a narrow applicable range of the permeability parameter (K) values, excluding very permeable or less permeable beaches (i.e., the hydraulic conductivity K > 10-3 m/s or © 2024, The Authors. All rights reserved.

关键词： Hydraulic conductivity

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Enhancing the green efficiency of fundamental sectors in China’s industrial system:A spatial-temporal analysis

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Journal of Management Science and Engineering 2021年第4期6卷 393-412页

作者： Jiangxue Zhang Xu Liu Xue Zhang Yuan Chang Changbo Wang Lixiao Zhang School of Economics and Resource Management Beijing Key Lab of SCI-TECH Strategy for Urban Green DevelopmentBeijing Normal UniversityBeijing100875China School of Business Harbin University of CommerceHarbin150028China School of Management Science and Engineering Central University of Finance and EconomicsBeijing100081China College of Economics and Management&Research Center for Soft Energy Science Nanjing University of Aeronautics and AstronauticsNanjing210016China State Key Joint Laboratory of Environmental Simulation and Pollution Control School of EnvironmentBeijing Normal UniversityBeijing100875China

Due to sectoral interactions in the economy,the overall green efficiency(GE)of China’s industrial system relies heavily on fundamental sectors that contribute substantial energy to the supply chain production of other sectors but shows low sectoral *** the three fundamental sectors in China’s industrial systems,namely the smelting and pressing of nonferrous metals(SPNFM),the processing of petroleum,coking,and nuclear fuel(PPCNF);and the manufacturing of nonmetallic mineral products(MNMMP),we employed a three-stage data envelopment analysis(DEA)model to measure GE in the fundamental sectors in 30 provinces from 2010 to *** then adopted a stochastic frontier analysis(SFA)model to evaluate the influence of technological innovation(TI),industrial agglomeration(IA),environmental regulation(ER),and intraindustry competition(IC).The results showed that GE in the three fundamental sectors varied ***,TI promoted GE in MNMMP,but the effect was not obvious in the SPNFM and PPCNF ***,ER had positive impacts on GE in the fundamental *** effects of IA and IC on GE in the fundamental sectors varied in direction and *** eliminating the impacts of environmental effects and statistical noise,the real GE in the three fundamental sectors varied significantly compared to the comprehensive *** opportunities for enhancing GE in the fundamental sectors mainly lie in region-specific policy and regulations that avoid a“one-size-fits-all”governance approach.

关键词： Fundamental sectors Green efficiency Three-stage DEA Spatial differences

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Screening Triazine Herbicides in Drinking Water in the Yangtze River Delta, China: Occurrence and Health Risk

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SSRN 2022年

作者： Wang, Rui Cai, MingHong Wang, Feng Zheng, Hongyuan Xiao, Kaiyan Xu, Zhicheng Zhang, Shengwei Zhu, Jincai Ministry of Natural Resources Key Laboratory for Polar Science Polar Research Institute of China 451 Jinqiao Road Shanghai200136 China State Key Laboratory of Water Environment Simulation School of Environment Beijing Normal University Beijing100875 China School of Oceanography Shanghai Jiao Tong University 1954 Huashan Road Shanghai200030 China Department of Municipal and Environmental Engineering School of Civil Engineering Beijing Jiaotong University Beijing100044 China State Key Laboratory of Pollution Control and Resource Reuse College of Environmental Science and Engineering Tongji University Shanghai200092 China

Triazine herbicides are toxic to humans and aquatic organisms. However, current research on triazine herbicides in water has focused on atrazine and has largely ignored the potential risks of other herbicides, particularly in drinking water. In this study, we tested the drinking water of the Yangtze River Delta region for 13 triazine herbicides using the high-throughput organic analysis testing combined with high volume solid-phase extraction. We detected 11 of these targeted triazine herbicides in tap water (TW) (mean: 5.29 ± 6.1 ng/L). The herbicide with the highest percentage in TW was terbutryn, which may be related to the treatment process of the water treatment plant. Nine triazine herbicides were detected in barreled water (BW) (mean: 1.67 ± 0.538 ng/L). Concentrations of most triazine herbicides were higher in TW than in BW. The quality of the water source significantly impacts the distribution of triazine herbicides in BW, with deep treatment reducing the content of some pesticide residues. The difference in herbicide types in drinking water was mainly influenced by both the water treatment process and the source water. There were no significant differences between urban and suburban areas, with large differences between cities. Triazine herbicides were ingested more through TW, with an estimated daily intake 3–4 times higher (range: 0.018–0.05 ng/kg-bw/d) than that through BW (range: 0.006–0.016 ng/kg-bw/d). The acute toxicities of the two groups of drinking water samples were negligible. This study provides the first overview of the occurrence, regional distribution characteristics, and associated potential human health risks of triazine herbicides in drinking water in China. © 2022, The Authors. All rights reserved.

关键词： Potable water

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Characterization of a phenanthrene-degrading methanogenic community

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Frontiers of environmental Science & Engineering 2018年第5期12卷 146-154页

作者： Quanhui Ye Chengyue Liang Chongyang Wang Yun Wang Hui Wang State Key Joint Laboratory on Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China

Polycyclic aromatic hydrocarbons(PAHs)often occur in oil-contaminated soil,coke wastewater and domestic sludge;however,associated PAH degraders in these environments are not *** we evaluated phenanthrene degradation potential in the mixed samples of above environments,and obtained a methanogenic community with different microbial profile compared to those from *** was efficiently degraded(1.26 mg/L/d)and nonstoichiometric amount of methane was produced simultaneously.16S rRNA gene sequencing demonstrated that bacterial populations were mainly associated with Comamonadaceae Nocardiaceae and Thermodesulfobiaceae,and that methanogenic archaea groups were dominated by Methanobacterium and *** such as hexane,hexadecane,benzene and glucose showed the most positive effects on phenanthrene *** utilization tests indicated that this culture could not utilize other *** analyses could offer us some suggestions on the putative phenanthrene-degrading microbes in such environments,and might help us develop strategies for the removal of PAHs from contaminated soil and sludge.

关键词： Phenanthrene degradation potential Methanogenic Bacterial population Archaeal group

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