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Mortality weighting-based method for aggregate urban air risk assessment

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2011年第9期12卷 702-709页

作者： Qing-yu ZHANG Guo-jin SUN Wei-li TIAN Yu-mei WEI Si-mai FANG Jin-feng RUAN Guo-rong SHAN Yao SHI department of environmental Engineering Zhejiang University Hangzhou 310058 China department of chemical Engineering Zhejiang University Hangzhou 310027 China Zhejiang Provincial Engineering Research Center of Industrial Boiler & Furnace Flue Gas Pollution Control Hangzhou 311202 China College of Information University of International Business and Economic Beijing 100029 China

This paper deals with a mortality-weighted synthetic evaluation （MWSE） method for evaluating urban air risk. Sulphur dioxide （SO2）, nitrogen oxide （NOx）, and particulate matter （PMl0） were used as pollution indices. The urban area of Hangzhou, China is divided into 756 grid cells, with a resolution of 1 km× 1 km, and is evaluated using the MWSE and the air quality index （AQI）, a widely-used method to evaluate ambient air quality and air risk. In an evaluation of one day in April 2004, the surface areas categorized as levels Ⅰ and Ⅲ, as defined by the integrated air risk evaluation, were 27.3% and 3.3% lower, respectively, than grades Ⅰ and Ⅲ defined by the AQI evaluation. Meanwhile, the areas classified as level Ⅱ or above level Ⅲ by the integrated air risk evaluation were 55.1% and 101. 1% higher, respectively, than grade Ⅱ or above grade Ⅲ when using the AQI evaluation. From this comparison, we find that the MWSE method is more sensitive than the AQI method. The AQI method uses a single index to assess integrated air quality and is therefore unable to evaluate integrated air risks due to multiple pollutants. The MWSE method overcomes this problem, providing improved accuracy in air risk assessment.

关键词： Integrated air risk Mortality-weighted synthetic evaluation (MWSE) Air quality index (AQI) Air pollution

Fate and risk assessment of emerging contaminants in reclaimed water production processes

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Frontiers of environmental Science & Engineering 2021年第5期15卷 295-310页

作者： Yuan Meng Weiyi Liu Heidelore Fiedler Jinlan Zhang Xinrui Wei Xiaohui Liu Meng Peng Tingting Zhang department of environmental Science and Engineering Research Centre for Resource and EnvironmentBeijing University of Chemical TechnologyBeijing100029China MTM Research Centre School of Science and TechnologyOrebro UniversityOrebroSE-70182Sweden State Key Laboratory of environmental Criteria and Risk Assessment National Engineering Laboratory for Lake Pollution Control and Ecological RestorationResearch Centre of Lake EnvironmentChinese Research Academy of Environmental SciencesBeijing100012China School of Environment Tsinghua UniversityBeijing100084China

Reclaimed water has been widely applied in irrigation and industrial *** the behavior of emerging contaminants in the production process of reclaimed water is the first prerequisite for developing relevant water quality *** study investigated 43 emerging contaminants,including 22 pharmaceuticals and personal care products(PPCPs),11 organophosphorus flame retardants(OPFRs),and 10 antibiotic resistance genes(ARGs)in 3 reclaimed wastewater treatment plants(RWTPs)in *** composition profiles and removal efficiencies of these contaminants in RWTPs were *** results indicated that the distribution characteristics of the different types of contaminants in the three RWTPs were ***,sul2 and tris(1-chloro-2-propyl)phosphate were the dominant substances in the wastewater,and their highest concentrations were 27104 ng/L,1.4×10^(7) copies/mL and 262 ng/L,*** and sul2 were observed to be the dominant substances in the sludge,and their highest concentrations were 5419 ng/g and 3.7×10^(8) copies/g,***/anoxic/oxic system combined with the membrane bioreactor process achieved a relatively high aqueous removal of PPCPs(87%).ARGs and OPFRs were challenging to remove,with average removal rates of 6.5%and 31%,*** meta-analysis indicated that tertiary treatment processes performed better in emerging contaminant removal than secondary *** exhibited the highest mass load discharge,with 33.5 mg/d per 1000 *** and tris(2-ethylhexyl)phosphate posed high risks(risk quotient>1.0)to aquatic *** study provides essential evidence to screen high priority pollutants and develop corresponding standard in RWTPs.

关键词： Trace organic pollution Antibiotic resistance genes Reclaimed wastewater Sludge Risk assessment Mass load

Quantitative Structure-Activity Relationships of Organic pollutants

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Chinese Science Bulletin 1993年第16期38卷 1364-1367页

作者：赵元慧王连生高鸿 department of environmental Science Nanjing University department of Chemistry Nanjing University

QSARs (Quantitative structure-activity relationships) can provide correlations between the toxicity of a chemical and the physicochemical descriptors of the chemical. They can stimulate the development of toxicity data by allowing estimations of toxicity to an organism to be made based on easily measured or calculated characteristics. In this note, we studied structure-activity relationships of chlorobenzenes, nitrobenzenes, anilines, phenols,

关键词： structure-activity toxidty mechanism correlation equation

Impact of forest fires on regional air quality in Southeast Asia

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Chinese Journal Of Geochemistry 2006年第B8期25卷 221-222页

作者： Rajasekhar Balasubramanian Siao Wee See Division of environmental Science and Engineering department of chemical and Biomolecular Engineering

Efficient removal for multiple pollutants via Ag_(2)O/BiOBr heterojunction:A promoted photocatalytic process by valid electron transfer pathway

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Chinese chemical Letters 2020年第10期31卷 2698-2704页

作者： Zhiruo Zhou Yanan Li Mingmei Li Yi Li Sihui Zhan College of environmental Science and Engineering Key Laboratory of Pollution Processes and Environmental CriteriaTianjin Key Laboratory of Environmental Remediation and Pollution ControlNankai UniversityTianjin 300071China Tianjin Key Laboratory of Molecular Optoelectronic Sciences Department of ChemistrySchool of ScienceTianjin University&Collaborative Innovation Center of Chemical Science and Engineering(Tianjin)Tianjin 300072China Tianjin Key Lab for Rare Earth Materials and Applications Tianjin 300072China

Multiple pollutants including pathogenic microorganism contaminations and emerging organic contaminations(EOCs)have shown a growing threat to the environment,especially the natural ***,the control and removal of pathogenic microorganism contaminations and EOCs have been greatly limited since limited knowledge of their environmental ***,a novel and efficient photocatalyst Ag_(2)O/BiOBr heterojunction was synthesized and used for removal of multiple pollutants including Escherichia coli(***),Staphylococcus aureus(***),tetracycline and acetaminophen under visible *** results showed that there were valid electron transfer pathways between BiOBr and Ag_(2)O,the main electron transfer direction was the BiOBr to Ag_(2)***-generated electrons were stored in Ag_(2)O and thus separation efficiency between holes and photo-generated electrons was obviously *** oxygen species were highly produced and eventually end up with the high efficiency of removal of multiple *** Ag_(2)O/BiOBr with Ag_(2)O content at 3%(the best performance)under visible light,log decrease of *** was 7.16(removal efficiency was 100%)in 120 min,log decrease of *** was 7.23(removal efficiency was 100%)in 160 min,C/C0 of tetracycline was 0.06 in 180 min,C/C0 of acetaminophen was 0.17 in 180 *** work could provide a promising candidate in the actual contaminated natural waters for cleaning multiple pollutants.

关键词： Water pollution Photocatalysis Multiple pollutants Electrons transfer channels

Contamination by Organochlorine pesticides in the Estuaries of Southeast China

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chemical Research in Chinese Universities 2002年第2期18卷 153-160页

作者： Z.L.Zhang H.S.Hong J.L.Zhou M.H.Dai K.Maskaouib W.Q.Chen department of environmental Science and Engineering Tsinghua POPs Research CentreTsinghua UniversityBeijing 100084China Key Laboratory of Marine environmental Science of Ministry of Education Environmental Science Research CentreXiamen Universi-tyXiamen 361005China School of Chemistry Physics and Environmental ScienceUniversity of SussexFalmerBrighton BN19QJUK

Persistent organic pollutants(POPs) such as organochlorine pesticides are of global concern due to their widespread occurrence and persistence. This paper reports recent research studying the distribution and fate of organochlorine pesticides in the Jiulong River, the Minjiang River and the Pearl River estuaries in Southeast China. Eighteen organochlorine pesticides were extracted from water, pore water and sediment samples, followed by analysis by GC ECD. The results showed that the contamination levels were similar in these three estuaries. The levels of the total organochlorine pesticides in porewater were significantly higher than those in surface water, due to the high affinity of these hydrophobic compounds for sediment phase. Among the hexachlorocyclohexane(HCH) compounds, β HCH was found to be the most important isomer. The analysis of 1,1,1 trichloro 2,2 bis chlorophenyl ethane(DDT) and its metabolites showed that 1,1 dichloro 2[ o chlorophenyl] 2[ p chlorophenyl] ethylene(DDE) was dominant in the group.

关键词： Organochlorine insecticides DDT Lindane Jiulong River Estuary Minjiang River Estuary Pearl River Estuary Water Sediment

Biochar for removal of dyes in contaminated water:an overview

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Biochar 2022年第1期4卷 1024-1039页

作者： Saravanan Praveen Josephraj Jegan Thillainayagam Bhagavathi Pushpa Ravindiran Gokulan Laura Bulgariu department of Civil Engineering CMR Institute of TechnologyBengaluru 560037KarnatakaIndi department of Civil Engineering University College of EngineeringRamanathapuram 623513Tamil NaduIndia department of Civil Engineering GMR Institute of TechnologyRajamSrikakulam 532127Andhra PradeshIndia department of environmental Engineering and Management “Cristofor Simionescu”Faculty of Chemical Engineering and Environmental ProtectionGheorghe Asachi Technical University of Iaşi700050 IaşiRomania

In recent years,numerous investigations have explored the use of biochar for the removal of organic and inorganic pollutants in single component *** is a carbonaceous material produced from waste biomass,mainly by thermochemical conversion *** material was used as a biosorbent in various removal processes of pollutants,and its efficiency was strongly influenced by the characteristics of the biomass *** review integrates the recent works of literature to understand the biosorption behaviour of dyes onto biochar-based *** factors influencing the biosorption process and the mechanisms describing the biosorption behaviours of the biochar have been broadly ***,the biosorption models can be used to comprehend the competence of the biochar as biosorbent for dye removal techniques.

关键词： Biomass Bioremediation Biosorption Biosorbent

Prediction of soot–water partition coefficients for selected persistent organic pollutants from theoretical molecular descriptors

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Progress in Natural Science:Materials International 2008年第7期18卷 867-872页

作者： Qing Zhang, Jun Huang, Gang Yu * POPs Research Centre, department of environmental Science and Engineering, Tsinghua University, Beijing 100084, China POPs Research Centre Department of Environmental Science and Engineering Tsinghua University Beijing 100084 China

Quantitative structure–property relationship (QSPR) models were developed for soot–water partition coefficient (KSC) values of selected persistent organic pollutants (POPs), i.e. 10 polychlorinated dibenzo-p-dioxins and dibenzofurans, nine polychlorinated biphe- nyls, four polycyclic aromatic hydrocarbons and two polybrominated diphenyl ethers, using partial least squares (PLS) regression. Quan- tum chemical descriptors computed by parameterized model revision 3 Hamiltonian method were used as predictor variables. The cross- validated Q2cum value for the optimal QSPR model is 0.844, indicating a good predictive capability for the logKSC values of these chem- icals. The QSPR results showed that average molecular polarizability (a), standard heat of formation (DHf) and energy of the lowest unoccupied molecular orbital (ELUMO) have dominant effects on KSC of POPs. The results suggested that logKSC values of POPs increase with the increase of a. Contrarily, logKSC values decrease with the increase of ELUMO and DHf of POPs.

关键词： Quantitative structure–property relationships Black carbon Persistent organic pollutants Quantum chemical descriptors Partial least squares

巯基化活性炭靶向捕获电子废弃物酸浸液中金离子

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Science Bulletin 2023年第11期68卷 1095-1099,M0003页

作者：李敏姚子威陈以頔李德伟邵家创董浩孟竹杨利明任伟罗旭彪邵鹏辉 department of chemical Engineering Chongqing University of Science and TechnologyChongqing 401331China National-Local Joint Engineering Research Center of Heavy Metals pollutants Control and Resource Utilization Nanchang Hangkong UniversityNanchang 330063China State Key Laboratory of Urban Water Resource and Environment School of Civil and Environmental EngineeringHarbin Institute of Technology(Shenzhen)Shenzhen 518055China

电子废弃物中回收金兼具污染治理、资源循环双重目的,是环境高水平保护、经济高质量发展的必要要求.吸附法是湿法回收金属资源的有效方法,但含金电子废弃物的浸出液都呈现强酸性和强氧化性;目前从该体系中靶向捕捉金离子仍存在巨大挑战... 详细信息

电子废弃物中回收金兼具污染治理、资源循环双重目的,是环境高水平保护、经济高质量发展的必要要求.吸附法是湿法回收金属资源的有效方法,但含金电子废弃物的浸出液都呈现强酸性和强氧化性;目前从该体系中靶向捕捉金离子仍存在巨大挑战.本文报道了一种巯基功能化的秸秆基活性炭,在强酸、强氧化性体系中实现了金离子的靶向捕获,其最大吸附容量可达5309 mg/g,选择性系数达到1.21×10^(6);吸附后的材料经煅烧得到金单质,其纯度高达99.9%.机理研究表明,巯基电位选择性诱导金离子优先还原,并促发了吸附-还原过程自发进行.由于量子尺寸效应,被还原的金簇在炭材料表面积累,处于“激发状态”的纳米金簇,将进一步诱导还原体系中金离子,呈现一种自促进作用.研究实现了复杂苛刻酸浸液中金元素的靶向回收,为电子废弃物高质循环利用提供了新思路.

关键词：电子废弃物强氧化性污染治理资源循环循环利用选择性系数量子尺寸效应金离子