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Efficient removal of Cr(Ⅲ)-carboxyl complex from neutral and high-salinity wastewater by nitrogen doped biomass-based composites

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Chinese Chemical Letters 2023年第1期34卷 397-402页

作者： Li Song Shichao Jing Yixing Qiu Fuqiang Liu Aimin Li State Key Laboratory of Pollution Control and Resource Reuse School of the EnvironmentNanjing UniversityNanjing 210023China

Heavy metals usually exist stably as the species of organic complexes in high-salinity ***,their effective removal is challenging,especially when the initial p H is ***,a novel nitrogen doped biomass-based composite(N-CMCS)was synthesized to remove the complexed heavy metal of Cr(Ⅲ)-*** maximum adsorption capacity of Cr(Ⅲ)-Citrate(Cr-Cit)by N-CMCS under neutral p H(7.0)and high-salinity(200 mmol/L NaCl)condition was up to 2.50 mmol/*** the removal performance remained stable after 6 times of *** with species and characterizations analysis,electrostatic attraction and hydrogen bonding were the main mechanisms for N-CMCS to remove Cr(Ⅲ)-carboxyl *** adsorption indicated N-CMCS column could treat about 1300BV simulated wastewater and 350 BV actual wastewater with the concentration of effluent lower than1.0 mg/***,N-CMCS could remove a variety of complexed heavy metal ions under neutral p H,indicating the great potential in practical application.

关键词： Biomass-based Nitrogen doping Adsorption Complexed heavy metals High-salinity wastewater

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Enhanced Cd^(2+)removal from aqueous solution using olivine and magnesite combination:New insights into the mechanochemical synergistic effect

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Journal of environmental Sciences 2025年第1期147卷 714-725页

作者： Xiaofang Chen Chao Wang Min Chen Huimin Hu Junwei Huang Ting Jiang Qiwu Zhang School of Resources&Environmental Engineering Wuhan University of TechnologyWuhan 430070China State Environmental Protection Key Laboratory of Water Environmental Simulation and Pollution Control South China Institute of Environmental SciencesMinistry of Ecology and EnvironmentGuangzhou 510655China

In this study,an efficient stabilizer material for cadmium(Cd^(2+))treatment was successfully prepared by simply co-milling olivine with *** analyticalmethods including XRD,TEM,SEM and FTIR,combined with theoretical calculations(DFT),were used to investigate mechanochemical interfacial reaction between twominerals,and the reaction mechanism of Cd removal,with ion exchange between Cd^(2+)and Mg^(2+)as the main pathway.A fixation capacity of Cd^(2+)as high as 270.61 mg/g,much higher than that of the pristine minerals and even the individual/physical mixture of milled olivine and magnesite,has been obtained at optimized conditions,with a neutral pH value of the solution after treatment to allow its direct *** as-proposed Mg-based stabilizer with various advantages such as cost benefits,green feature etc.,will boosts the utilization efficiency of naturalminerals over the elaborately prepared adsorbents.

关键词： Olivine Magnesite Interface reaction Mechanochemical activation Cadmium removal

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Characterizing molecular fingerprint of dissolved organic matter shaped by natural and anthropogenic factors in a large macrophytic shallow lake wetland

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Frontiers of environmental Science & Engineering 2025年第3期19卷 73-86页

作者： Shengwu Yuan Yiping Xu Pengfei Wang Ruili Xie Jiangbo Hu Zhenghui Fu Kun Wang Shuhang Wang Xia Jiang Kaifeng Rao Mei Ma Zijian Wang State Key Laboratory of Environmental Criteria and Risk Assessment National Engineering Laboratory for Lake Pollution Control and Ecological RestorationState Environment Protection Key Laboratory for Lake Pollution ControlState Environmental Protection Key Laboratory of Drinking Water Source ProtectionChinese Research Academy of Environmental ScienceBeijing 100012China Research Center for Eco-Environmental Sciences Chinese Academy of SciencesBeijing 100085China College of Resources and Environment University of Chinese Academy of SciencesBeijing 100049China

Dissolved organic matter(DOM)participates in and affects many biological processes in aquatic ecosystems,altering nutrient cycling,bioavailability and toxicity of *** water contains thousands of DOM molecules,which largely originate from natural sources and are greatly influenced by external inputs through anthropogenic *** elucidate the shaping mechanism of the DOM composition under complex habitat conditions and anthropogenic disturbances,the characteristic molecular fingerprint of DOM was determined based on chemodiversity information obtained via ultrahigh-resolution mass spectrometry for the Baiyangdian wetland(a typical large macrophytic shallow lake in North China).In the Baiyangdian wetland,the DOM composition exhibited high complexity and spatial heterogeneity,and more recalcitrant DOM molecules were identified in summer than in *** multiple natural factors(nutrient concentration,depth of water and quality of submerged macrophytes)and anthropogenic factors(different land uses and discharge of pollutants)were associated with the relative abundance of various DOM molecules,only the influences from the anthropogenic factors were statistically *** alpha diversity index of DOM could reflect variations in both the natural factors(total dissolved phosphorus)and the anthropogenic factors(discharge of nitrogen and phosphorus).Furthermore,the DOM composition in each group were clustered according to the ecological functions(natural reserves,tourism,breeding,and domestic supply functions),and exhibited molecular fingerprint *** study provides an effective approach to characterize the molecular fingerprint features of DOM and critical information to better understand the shaping mechanism of the DOM composition under complex habitat conditions and anthropogenic disturbances.

关键词： DOM FT-ICR-MS Chemodiversity Habitat Ecological function Baiyangdian wetland

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Review of advanced oxidation processes for treating hospital sewage to achieve decontamination and disinfection

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Chinese Chemical Letters 2024年第1期35卷 140-152页

作者： Si-Ying Yu Zhi-Hui Xie Xiaoyu Wu Yun-Zhe Zheng Yang Shi Zhao-Kun Xiong Peng Zhou Yang Liu Chuan-Shu He Zhi-Cheng Pan Kai-Jun Wang Bo Lai State Key Laboratory of Hydraulics and Mountain River Engineering College of Architecture and EnvironmentSichuan UniversityChengdu 610065China Sino-German Centre for Water and Health Research Sichuan UniversityChengdu 610065China State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China Water Safety and Water Pollution Control Engineering Technology Research Center in Sichuan Province Haitian Water GroupChengdu 610041China

Hospital sewage contains various harmful pharmaceutical contaminants(e.g.,antibiotics,anti-inflammatory agents,and painkillers)and pathogens(e.g.,bacteria,viruses,and parasites),whose direct discharge into the environment will induce diseases and pose a powerful threat to human health and safety,and environmental *** recent years,advanced oxidation processes(AOPs),particularly photocatalysis,electrocatalysis,and ozone catalysis have been developed as widespread and effective techniques for hospital sewage ***,there is a lack of systematic comparison and review of the prior studies on hospital sewage treatment using AOPs *** review elaborates on the mechanisms,removal efficiencies,and advantages/disadvantages of these AOPs systems for hospital wastewater decontamination and ***,some novel and potential technologies such as photo-electrocatalysis,electro-peroxone,Fenton/Fenton-like,and piezoelectric catalysis are also included and ***,we further summarize and compare the capacity of these AOPs to treat the actual hospital wastewater under the impact of the water matrix and pH,and estimate the economic cost of these technologies for practical ***,the future development directions of AOPs for hospital wastewater decontamination and disinfection have been ***,this study provides a comparison and overview of these AOP systems in an attempt to raise extensive concerns about hospital wastewater decontamination and disinfection technologies and guide researchers to discover the future directions of technologies optimization,which would be a crucial step forward in the field of hospital sewage treatment.

关键词： Hospital sewage treatment Advanced oxidation processes Pharmaceutical contaminants Disinfection Decontamination

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Novel quantitative structure activity relationship models for predicting hexadecane/air partition coefficients of organic compounds

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Journal of environmental Sciences 2023年第2期124卷 98-104页

作者： Ya Wang Weihao Tang Zijun Xiao Wenhao Yang Yue Peng Jingwen Chen Junhua Li State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China Key Laboratory of Industrial Ecology and Environmental Engineering(MOE) School of Environmental Science and TechnologyDalian University of TechnologyLinggong Road 2Dalian 116024China

Predicting the logarithm of hexadecane/air partition coefficient(L)for organic compounds is crucial for understanding the environmental behavior and fate of organic compounds and developing prediction models with polyparameter linear free energy ***,two quantitative structure activity relationship(QSAR)models were developed with 1272 L values for the organic compounds by using multiple linear regression(MLR)and support vector machine(SVM)*** the basis of the OECD principles,the goodness of fit,robustness and predictive ability for the developed models were *** SVM model was first developed,and the predictive capability for the SVM model is slightly better than that for the MLR *** applicability domain(AD)of these two models has been extended to include more kinds of emerging pollutants,i.e.,oraganosilicon *** developed QSAR models can be used for predicting L values of various organic *** van derWaals interactions between the organic compound and the hexadecane have a significant effect on the L value of the *** in silico models developed in current study can provide an alternative to experimental method for high-throughput obtaining L values of organic compounds.

关键词： L value Quantitative structure-activity relationship Multiple linear regression Support vector machine Oraganosilicon compounds

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Grand challenges of mitigating O3-related mortality in China by 2060

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Science Bulletin 2025年第9期70卷 1429-1431页

作者： Jiang, Yueqi Sun, Yisheng Li, Shengyue Yin, Dejia Dong, Zhaoxin Zheng, Haotian Zhao, Bin Wang, Shuxiao State Key Laboratory of Regional Environment and Sustainability School of Environment Tsinghua University Beijing100084 China Key Laboratory of Sources and Control of Air Pollution Complex Ministry of Ecology and Environment Beijing100084 China

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Superhydrophobic ceramic membrane coupled with a biphasic solvent for efficient CO_(2)capture

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Green Energy & environment 2025年第4期10卷 834-844页

作者： Kaili Xue Zhen Chen Xiaona Wu Heng Zhang Haiping Chen Junhua Li State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing100084China Beijing Key Laboratory of Pollutant Monitoring and Control in Thermoelectric Production Process School of EnergyPower and Mechanical EngineeringNorth China Electric Power UniversityBeijing102206China MOE Key Laboratory of Resources and Environmental Systems Optimization College of Environmental Science and EngineeringNorth China Electric Power UniversityBeijing102206China

An innovative strategy was proposed by integration of membrane contactor(MC)with biphasic solvent for efficient CO_(2) capture from flue *** accessible fly ash-based ceramic membrane(CM)underwent hydrophobic modification through silane grafting,followed by fluoroalkylsilane decoration,to prepare the superhydrophobic membrane(CSCM).The CSCM significantly improved resistance to wetting by the biphasic solvent,consisting of amine(DETA)and sulfolane(TMS).Morphological characterizations and chemical analysis revealed the notable enhancements in pore structure and hydrophobic chemical groups for the modified *** of wetting/bubbling behavior based on static wetting theory referred the liquid entry pressure(LEP)of CSCM increased by 20 kPa compared to pristine *** with traditional amine solvents,the biphasic solvent presented the expected phase *** experiments demonstrated that the CO_(2) capture efficiency of the biphasic solvent increased by 7%,and the electrical energy required for desorption decreased by 32%.The 60-h continuous testing and supplemental characterization of used membrane confirmed the excellent adaptability and durability of the *** study provides a potential approach for accessing hydrophobic ceramic membranes and biphasic solvents for industrial CO_(2) capture.

关键词： Carbon capture Membrane contactor Hydrophobic modification Membrane wetting Biphasic solvent

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High-temperature calcination dramatically promotes the activity of Cs/Co/Ce-Sn catalyst for soot oxidation

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Chinese Chemical Letters 2025年第1期36卷 534-538页

作者： Meng Wang Yan Zhang Yunbo Yu Wenpo Shan Hong He Center for Excellence in Regional Atmospheric Environment Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China Zhejiang Key Laboratory of Urban Environmental Processes and Pollution Control Ningbo Urban Environment Observation and Research StationInstitute of Urban EnvironmentChinese Academy of SciencesNingbo 315800China State Key Joint Laboratory of Environment Simulation and Pollution Control Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China University of Chinese Academy of Sciences Beijing 100049China

Catalytic oxidation of soot is of great importance for emission control on diesel *** this work,a highly active Cs/Co/Ce-Sn catalyst was investigated for soot oxidation,and it was unexpectedly found that high-temperature calcination greatly improved the activity of the *** the calcination temperature was increased from 500℃ to 750℃,T_(50) decreased from 456.9℃ to 389.8℃ in a NO/O_(2)/H_(2)O/N_(2) *** results revealed that high-temperature calcination can promote the ability to transfer negative charge density from Cs to other metal cations in Cs/Co/Ce-Sn,which will facilitate the production of more oxygen defects and the generation of more surface-active oxygen *** oxygen species are beneficial to the oxidation of NO to NO_(2),leading to the high yield of NO_(2) ***,the Cs/Co/Ce-Sn catalyst calcined at 750℃ demonstrated higher activity than that calcined at 500℃.This work provides a pathway to prepare high efficiency catalysts for the removal of soot and significant insight into the effects of calcination on soot oxidation catalysts.

关键词： Soot oxidation Calcination Surface defects Surface-active oxygen species NO_(2)

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Analysis of Emerging Contaminants in Surface Water,Aquaculture Ponds and Wastewater Treatment Facilities in the Taige Canal Basin

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Chemical Research in Chinese Universities 2023年第3期39卷 516-524页

作者： CHENG Xue JIANG Xinshu LIU Liquan HUANG Jun State Key Joint Laboratory of Environmental Simulation and Pollution Control(SKLESPC) Beijing Key Laboratory for Emerging Organic Contaminants Control(BKLEOC)Beijing Laboratory for Environmental Frontier Technologies(BLEFT)School of EnvironmentTsinghua UniversityBeijing100084P.R.China

Emerging contaminants(ECs)have aroused great concerns due to their widespread presence as well as their potential health and ecological *** monitoring data about ECs in Chinese rural areas are still *** this study,Taige Canal basin was selected as a typical rural area for a pilot *** occurrence of ECs,including pharmaceutical and personal care products(PPCPs),pesticides,plasticizers and flame retardants,in surface water and aquaculture ponds,as well as in wastewater treatment facilities,was comprehensively *** effectiveness of rural decentralized wastewater treatment facilities and centralized wastewater treatment plant(WWTP)in removing ECs was also *** 126 commonly used pesticides for target analysis,25 compounds were detected in surface water with high frequency of>80%.Besides,55 PPCPs,21 pesticides and 18 other industrial products were identified by non-target analysis using high resolution mass spectrometry(HRMS).Totally 18 compounds were detected in surface water with a frequency of>60%and 6 of them were found in all samples,including irbesartan,valsartan,propazine,buprofezin,bis(2-ethylhexyl)phthalate(DEHP)and tri-(2-chloroisopropyl)phosphate(TCPP),with mean concentrations of 3022,195,125,218,3738 and 545 ng/L,*** are 29 compounds(11 PPCPs,8 pesticides and 10 other industrial products)detected in water samples from the aquaculture ponds,of which 13 compounds were found in all three *** removal efficiencies of ECs in wastewater treatment facilities are generally limited,except valsartan(82%–86%),nobiletin(100%)and diisodecylphthalate(100%)were found to be significantly removed.

关键词： Emerging contaminant Pharmaceutical and personal care product Pesticide Plasticizer Non-target analysis

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Rapid reduction of air pollution and short-term exposure risks in China

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Journal of environmental Sciences 2025年第3期149卷 126-138页

作者： Hao Fan Chuanfeng Zhao Yikun Yang Xingchuan Yang State Key Joint Laboratory of Environmental Simulation and Pollution Control School of EnvironmentBeijing Normal UniversityBeijing 100875China Laboratory for Climate and Ocean-Atmospheric Studies Department of Atmospheric and Oceanic SciencesSchool of PhysicsPeking UniversityBeijing 100871China College of Resource Environment and Tourism Capital Normal UniversityBeijing 100048China

With the continuous control of anthropogenic emissions,China’s air quality has improved significantly in recent *** this background,research on how the short-term exposure risks caused by air pollution in China have changed is *** study utilized hourly concentration data from ground observation stations and the official air quality guidelines of the Ministry of Ecology and environment of China and the World Health Organization as standards to systematically investigate the spatiotemporal characteristics and short-term exposure risks of air pollution in China from 2015 to *** results indicate that various atmospheric pollutants except for ozone showed a decreasing trend ***,both single pollutant air pollution days(SAPDs)and multiple pollutant air pollution days(MAPDs)showed varying degrees of reduction within 15 and 25 days,*** was dominated mainly by excessive PM_(2.5)and PM_(10)pollutants,while MAPD was dominated mainly by excessive pollutant combinations,including PM_(2.5)+PM_(10),CO+PM_(2.5)+PM_(10),and SO_(2)+PM_(2.5)+PM_(10).As the concentration of atmospheric pollutants decreased,the total excess risk(ER)decreased yearly from 2015 to 2022,but there were significant regional ***,the ER is less than 0.25%in southern China,in the range of 0.25%-0.5%in the North China Plain and some cities in the northeast,and higher than 1%in the *** matter is currently the primary pollutant posing short-term exposure risk in China,especially due to the impact of sandstorm *** study indicates that China’s atmospheric cleaning action is significantly beneficial for reducing health risks.

关键词： Air pollution Emission-reduction Total excess risk Particulate matter China

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