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Sorption kinetics of parent and substituted PAHs for low-density polyethylene（LDPE）:Determining their partition coefficients between LDPE and water(KLDPE) for passive sampling

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Journal of environmental Sciences 2020年第1期32卷 349-360页

作者： Pei Lei Jinjie Zhu Ke Pan Hong Zhang State Key Laboratory of Pollution Control and Resources Reuse School of the EnvironmentNanjing UniversityNanjing 210023China State Key Laboratory cf Environmental Aquatic Chemistry Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China Institute for Advanced Study Shenzhen UniversityShenzhen 518060China University of Chinese Academy of Sciences Beijing 100049China

Low-density polyethylene(LDPE)has been widely used as a sorbent for passive sampling of hydrophobic organic contaminants(HOCs)in aquatic ***,it has seen only limited application in passive sampling for measurement of freely dissolved concentrations of parent and substituted PAHs(SPAHs),which are known to be toxic,mutagenic and ***,the 16 priority PAHs and some typical PAHs were selected as target compounds and were simultaneously determined by gas chromatography–mass spectrometer(GC–MS).Some batch experiments were conducted in the laboratory to explore the adsorption kinetics of the target compounds in LDPE *** results showed that both PAHs and SPAHs could reach equilibrium status within19–38 days in sorption kinetic *** coefficients of partitioning between LDPE film(50μm thickness)and water(KLDPE)for the 16 priority PAHs were in good agreement with previously reported values,and the values of KLDPEfor the 9 SPAHs are reported in this study for the first *** linear relationships were observed,i.e.,log KLDPE=0.705×log KOW+1.534 for PAHs(R^2=0.8361,p<0.001)and log KLDPE=0.458×log KOW+3.092 for SPAHs(R^2=0.5609,p=0.0077).The selected LDPE film was also proven to meet the condition of"zero sink"for the selected target *** results could provide basic support for the configuration and in situ application of passive samplers.

关键词： Low-density polyethylene(LDPE) PAHs Substituted PAHs(SPAHs) Freely dissolved concentrations Passive sampling

The Overlooked Role of Co(Oh)2 in Co3o4 Activated Pms System: Suppression of Co2+ Leaching and Enhanced Degradation Performance of Antibiotics

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SSRN 2022年

作者： Wang, Hongjie Chen, Guanhan Dong, Wenyi Ding, Wenhui Wang, Feifei Zhao, Zilong Huang, Yuxiong School of Civil and Environmental Engineering Harbin Institute of Technology Shenzhen Shenzhen518055 China Tsinghua-Berkeley Shenzhen Institute Tsinghua Shenzhen International Graduate School Tsinghua University Shenzhen518055 China Shenzhen Key Laboratory of Water Resource Utilization and Environmental Pollution Control Shenzhen518055 China State Key Laboratory of Urban Water Resource and Environment School of Environment Harbin Institute of Technology Harbin150090 China

Cobalt oxide (Co 3 O 4 ) activated peroxymonosulfate (PMS) system was extensively studied due to its excellent catalytic performance. However, the relatively high cobalt (Co 2+ ) leaching (up to 2 mg/L) would pose high ecotoxicological risks. Herein, we identified the existence of Co(OH) 2 on the surface of Co 3 O 4 were the major source of Co 2+ leaching in the Co 3 O 4 activated PMS system. Furthermore, the Co 2+ leaching was effectively suppressed by converting Co(OH) 2 to Co 3 O 4 via pyrolysis treatment. In addition, reduced graphene oxide (rGO) was engaged to enhance the degradation performance of antibiotics in the Co 3 O 4 activated PMS system. The oxygen functionalities of rGO would catalyze PMS to generate sulfate radicals (SO 4 - ·) and trigger the non-radical pathway of singlet oxygen ( 1 O 2 ). We have achieved outstanding catalytic performance for carbamazepine (CAZ) degradation with low Co 2+ leaching, as CAZ (5 mg/L) could be completely degraded in 30 min. Combining experimental investigation and theoretical calculation, we also revealed the degradation pathways and mechanisms that CAZ would be oxidized and detoxified by 1 O 2 and SO 4 - ·. We have provided a simple approach to inhibit the Co 2+ leaching and enhance the catalytic performance of Co 3 O 4 activated PMS system for the effective control of antibiotics. © 2022, The Authors. All rights reserved.

关键词： Graphene

The Overlooked Role of Co(Oh)2 in Co3o4 Activated Pms System: Suppression of Co2+ Leaching and Enhanced Degradation Performance of Antibiotics

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SSRN 2022年

作者： Chen, Guanhan Wang, Hongjie Dong, Wenyi Ding, Wenhui Wang, Feifei Zhao, Zilong Huang, Yuxiong School of Civil and Environmental Engineering Harbin Institute of Technology Shenzhen Shenzhen518055 China Tsinghua-Berkeley Shenzhen Institute Tsinghua Shenzhen International Graduate School Tsinghua University Shenzhen518055 China Shenzhen Key Laboratory of Water Resource Utilization and Environmental Pollution Control Shenzhen518055 China State Key Laboratory of Urban Water Resource and Environment School of Environment Harbin Institute of Technology Harbin150090 China

关键词： Graphene

A Prediction Index of Volatile Organic Compounds pollution Conditions in Chemical Industry Park Based on Atmospheric Stability

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SSRN 2023年

作者： Chen, Xi Huang, Bo Li, Mei Xiao, Runhui Cai, Mingfu Zhou, Zhihua Ma, Song Gao, Wei Zhou, Zhen Institute of Mass Spectrometry and Atmospheric Environment Guangdong Provincial Engineering Research Center for On-line Source Apportionment System of Air Pollution Jinan University Guangzhou China Guangzhou Hexin Instrument Co. Ltd Guangzhou China Guangdong-Hongkong-Macau Joint Laboratory of Collaborative Innovation for Environmental Quality Guangzhou China Guangdong Province Engineering Laboratory for Air Pollution Control Guangdong Provincial Key Laboratory of Water and Air Pollution Control South China Institute of Environmental Sciences MEE Guangzhou China Shenzhen Ecological and Environmental Monitoring Center of Guangdong Province Shenzhen China

Volatile organic compounds (VOCs), as common precursors of ozone (O3) and fine particulate matter (PM2.5), are a focus of air pollution prevention and control. Furthermore, with the rapid development of industry, industrial sources have become the largest source of anthropogenic VOCs emissions, leading to economic development while causing great harm to the environment. It is becoming meaningful to efficiently predict the future total volatile organic compounds (TVOC) pollution conditions in chemical industry parks (CIPs), which can assist managers in carrying out corporate emission management in advance. In this study, TVOC monitoring data and meteorological data from January 1, 2022, to December 31, 2022, were used to innovatively construct the TVOC pollution index. This index comprehensively considers the atmospheric stability and localized horizontal diffusion conditions and can quickly and accurately predict the variation in the TVOC in a CIP in the next 7 days. In addition, we used synoptic weather patterns and backward trajectory analysis to explore the mechanism of VOCs pollution formation in a CIP. The results show that the combined influences of a westerly wind pattern, temperatures above 30°C, a subtropical high pressure system, more upwind pollutants, and the horizontal and vertical diffusion conditions in the CIP were unfavorable, leading to VOCs pollution. © 2023, The Authors. All rights reserved.

关键词： Volatile organic compounds

Towards elevated perfluorooctanoic acid (PFOA) enrichment in water: Sequential liquid-liquid extraction pretreatment for ion chromatography detection

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Chemosphere 2024年 358卷 142227页

作者： Yang, Yang He, Huan Chen, Yuheng Chen, Baiyang Esfahani, Ehsan Banayan Mohseni, Madjid Xu, Nan Nesterenko, Pavel 518055 China Department of Chemical & Biological Engineering University of British Columbia Vancouver BCV6T 1Z3 Canada Key Laboratory for Heavy Metal Pollution Control and Reutilization School of Environment and Energy Peking University Shenzhen Graduate School Shenzhen518055 China Department of Chemistry Lomonosov Moscow State University Vorob'evy Gory GSP-3 Moscow119899 Russia

The widespread detection of perfluorooctanoic acid (PFOA) in the environment has raised significant concerns. The standard PFOA analytical method relies on expensive solid-phase extraction (SPE) and liquid chromatography tandem mass spectrometry (LC-MS/MS) instruments, making routine use prohibitive. We herein proposed a cost-effective yet novel enrichment method for determining PFOA at ng L−1 level. This method entailed a two-step sample preparation process: firstly, PFOA was extracted and enriched using a forward-extraction under acidic conditions, followed by a backward-extraction and enrichment step utilizing alkaline water. The enriched samples were subsequently subjected to a common ion chromatography (IC). Results reveal that maintaining a forward-extraction pH below its pKa value (2.8) is essential, as protonated PFOA proves effective in enhancing the enrichment factor (EF). The challenge lied in driving PFOA from forward-extractant to aqueous backward-extractant due to the decreased hydrophobicity of deprotonated PFOA (log Kow2 = 1.0). In addition, we found that evaporating forward-extractant with alkaline backward-extractant (containing 5% methanol) reduced potential analytical uncertainties associated with PFOA evaporation and sorption. Under optimal conditions, the method achieved a detection limit of 9.2 ng L−1 and an impressive EF value of 719. Comparison with SPE-LC-MS/MS confirmed the proposed method as a promising alternative for PFOA determination. Although initially targeted for PFOA, the novel methodology is likely applicable to preconcentration of other poly-fluoroalkyl substances. © 2024 Elsevier Ltd

关键词： Ion chromatography

Hierarchically Porous Carbon Derived from Pore Remodeling of Waste Polymeric Membranes for High-Efficiency Adsorption Applications

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SSRN 2022年

作者： Hou, Zhiang Lan, Huachun Zhu, Kai An, Xiaoqiang Liu, Huijuan Qu, Jiuhui Center for Water and Ecology Tsinghua University State Key Joint Laboratory of Environment Simulation and Pollution Control School of Environment Tsinghua University Beijing100084 China School of Environmental Science and Engineering Suzhou University of Science and Technology Suzhou215009 China

Herein, the waste-derived carbon (AC-KOH) with multimodal pore structures was successfully synthesized by thermally remodeling the pores of waste hollow fiber membranes collected from sewage-treatment plants. Mechanism study revealed that KOH etching in the original pores of PVDF film leaves micropores, while the development of meso-macropores is induced by PET liner pyrolysis and subsequent re-crosslinking and cyclization surrounding KOH. The synergism of macro-meso-micropores enabled the fast diffusion of molecules from the bulk solution to adsorption sites, thereby AC-KOH exhibited fast adsorption kinetics for removing four types of phenolic pollutants and small dye molecules (molecular weight © 2022, The Authors. All rights reserved.

关键词： Adsorption

Estimating the value of a statistical life in China: A contingent valuation study in six representative cities

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Chinese Journal of Population,Resources and environment 2023年第4期21卷 269-278页

作者： Chaoji Cao Xinke Song Wenjia Cai Yichao Li Jianhui Cong Xueying Yu Mengzhao Gao Can Wang Ministry of Education Key Laboratory for Earth System Modeling Department of Earth System ScienceTsinghua UniversityBeijing100084China Center for Healthy Cities Institute for China Sustainable UrbanizationTsinghua UniversityBeijing100084China Tsinghua Urban Institute Tsinghua UniversityBeijing100084China State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing100084China Center for Statistical Science Tsinghua UniversityBeijing100084China Department of Industrial Engineering Tsinghua UniversityBeijing100084China School of Economics and Management Shanxi UniversityTaiyuan030000China School of Economics and Management Beihang UniversityBeijing100191China Beijing Advanced Innovation Center for Big Data-based Precision Medicine Beihang UniversityBeijing100191China Key Laboratory of Big Data-Based Precision Medicine(Beihang University) Ministry of Industry and Information TechnologyBeijing100191China

The value of a statistical life(VSL)is a crucial tool for monetizing health *** explore the VSL in China,this study examines people’s willingness to pay(WTP)to reduce death risk from air pollution in six representative cities in China based on face-to-face contingent valuation interviews(n=3936)from March 7,2019 to September 30,*** results reveal that the WTP varied from CNY 455 to 763 in 2019(USD 66-111),corresponding to a VSL range of CNY 3.79-6.36 million(USD 549395-921940).The VSL in China in 2019 is estimated to be CNY 4.76 million(USD 689659).The statistics indicate that monthly expenditure levels,environmental concerns,risk attitudes,and assumed market acceptance,which have seldom been dis‐cussed in previous studies,significantly impact WTP and *** findings will serve as a reference for ana‐lyzing mortality risk reduction benefits in future research and for policymaking.

关键词： Air pollution Contingent valuation method Willingness to pay Value of a statistical life China

Cattle manure biochar and earthworm interactively affected C02 and N20 emissions in agricultural and forest soils:Observation of a distinct difference

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环境科学与工程前沿 2022年第3期16卷 141-153页

作者： Xiaoqiang Gong Jinbiao Li Scott X.Chang Qian Wu Zhengfeng An Chengpeng Huang Xiangyang Sun Suyan Li Hui Wang Department of Renewable Resources University of AlbertaEdmontonAlberta T6G 2E3Canada College of Forestry Beijing Forestry UniversityBeijing 100083China State Key Joint Laboratory of Environmental Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China Department of Renewable Resources University of AlbertaEdmontonAlberta T6G 2E3Canada Co-Innovation Center for Sustainable Forestry in Southern China Nanjing Forestry UniversityNanjing 210037China Department of Renewable Resources University of AlbertaEdmontonAlberta T6G 2E3Canada Key Laboratory of Grassland Resources of the Ministry of Education and Key Laboratory of Forage Cultivation Processing and High Efficient Utilization of the Ministry of AgricultureCollege of GrasslandResources and EnvironmentInner Mongolia Agricultural UniversityHohhot 010011China State Key Laboratory of Subtropical Silviculture Zhejiang A&F UniversityLin'an 311300China College of Forestry Beijing Forestry UniversityBeijing 100083China State Key Joint Laboratory of Environmental Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China

The application of manure-derived biochar offers an alternative to avoid the direct application of manure to soil causing greenhouse gas *** fauna,especially earthworms,can markedly stimulate carbon dioxide(CO2)and nitrous oxide(N2O)emissions from *** study therefore investigated the effect of cattle manure biochar(added at rates of 0,2％,or 10％,coded as BC0,BC2 and BC10,respectively)application,with or without earthworm Aporrectodea turgida,on emissions of CO2 and N2O and changes of physic-chemical properties of agricultural and forest soils in a laboratory incubation *** BC10 treatment significantly enhanced cumulative CO2 emissions by 27.9％relative to the untreated control in the agricultural *** the contrary,the BC2 and BC10 treatments significantly reduced cumulative CO2 emissions by 16.3％-61.1％and N2O emissions by 92.9％-95.1％compared to the untreated control in the forest *** addition of earthworm alone significantly enhanced the cumulative CO2 and N2O fluxes in agricultural and forest *** CO2 and N2O fluxes were significantly increased when BC2 and BC10 were applied with earthworm in the agricultural soil,but were significantly reduced when BC10 was applied with earthworm in the forest *** study demonstrated that biochar application interacted with earthworm to affect CO2 and N2O emissions,which were also dependent on the soil type *** study suggests that manure biochar application rate and use of earthworm need to be carefully studied for specific soil types to maximize the climate change mitigation potential of such management practices.

关键词：

Pyrite Coupled with Steel Slag to Enhance Simultaneous Nitrogen and Phosphorus Removal in Constructed Wetlands

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SSRN 2023年

作者： Liu, Ying Liu, Xiao-Hui Wang, Hong-Cheng Li, Zhi-Ling Liang, Bin Sun, Yi-Lu Cheng, Hao-Yi Lu, Shao-Yong Wang, Ai-Jie State Key Laboratory of Urban Water Resource and Environment School of Environment Harbin Institute of Technology Harbin150090 China School of Civil and Environmental Engineering Harbin Institute of Technology Shenzhen Shenzhen518055 China State Key Laboratory of Environmental Criteria and Risk Assessment National Engineering Laboratory for Lake Pollution Control and Ecological Restoration Chinese Research Academy of Environmental Sciences Beijing100012 China Key Laboratory of Environmental Biotechnology Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing100085 China

FeS2-based constructed wetland has garnered increasing interest as an efficient and eco-friendly method for nitrogen removal from carbon limitation wastewater. However, large-scale application is limited due to low nitrogen and phosphorus simultaneous removal performance, slow growth rate of autotrophic denitrifiers and high effluent acidity. This study proposes a novel autotrophic denitrification constructed wetland by coupling with pyrite and steel slag (PTCW). The results showed that steel slag addition in PTCW increased total nitrogen removal by 40% ~ 54%. The higher removal of total phosphorus was mainly attributed to the strong substrate adsorption and metal ions precipitation, which was removed at the pyrite and steel slag layer. The genes involved in denitrification, glycolysis, oxidative phosphorylation and sulfur oxidation were notably enriched in PTCW, indicating the increasing contribution of FeS2-based autotrophic denitrification coupled with steel slag to NO3− removal. The XPS analysis identified the formation of SO42−, S2−, S0, and Fe(Ⅲ) on the pyrite surface in PTCW. S0 formation and sulfate reducing bacteria enrichment in PTCW were all promoted due to the coupling of pyrite and steel slag, which also maintained higher NO3− removal efficiency. Thiobacillus was specifically enriched in PTCW due to steel slag addition. The toxicity effect of pyrite on root tip can be alleviated by steel slag, which was conducive to nutrients assimilation by roots. The findings of this study provide novel insights into the molecular mechanism of carbon, nitrogen, and sulfur metabolism in pyrite-steel slag based CWs. © 2023, The Authors. All rights reserved.

关键词： Pyrites