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Improved atmospheric mercury simulation using updated gas-particle partition and organic aerosol concentrations

Journal of Environmental Sciences 2022年第9期34卷 106-118页

作者： Kaiyun Liu Qingru Wu Shuxiao Wang Xing Chang Yi Tang Long Wang Tonghao Liu Lei Zhang Yu Zhao Qin’geng Wang Jinsheng Chen State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex Beijing 100084China Institute of Atmospheric Environment Guangdong provincial academy of environmental scienceGuangzhou 510045China China National Environmental Monitoring Centre Beijing 100012China State Key Laboratory of Pollution Control and Resource Reuse School of the EnvironmentNanjing UniversityNanjing210023China Center for Excellence in Regional Atmos.Environ. Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China

The gaseous or particulate forms of divalent mercury(HgⅡ) significantly impact the spatial distribution of atmospheric mercury concentration and deposition flux(FLX). In the new nested-grid GEOS-Chem model, we try to modify the HgⅡ gas-particle partitioning relationship with synchronous and hourly observations at four sites in China. Observations of gaseous oxidized Hg(GOM), particulate-bound Hg(PBM), and PM 2.5 were used to derive an empirical gas-particle partitioning coefficient as a function of temperature( T) and organic aerosol(OA) concentrations under different relative humidity(RH). Results showed that with increasing RH, the dominant process of HgⅡ gas-particle partitioning changed from physical adsorption to chemical desorption. And the dominant factor of HgⅡ gas-particle partitioning changed from T to OA concentrations. We thus improved the simulated OA concentration field by introducing intermediate-volatility and semi-volatile organic compounds(I/SVOCs) emission inventory into the model framework and refining the volatile distributions of I/SVOCs according to new filed tests in the recent literatures. Finally, normalized mean biases(NMBs) of monthly gaseous element mercury(GEM), GOM, PBM, WFLX were reduced from-33%–29%, 95%–300%, 64%–261%, 117%–122% to-13%–0%,-20%–80%,-31%–50%,-17%–23%. The improved model explains 69%–98% of the observed atmospheric Hg decrease during 2013–2020 and can serve as a useful tool to evaluate the effectiveness of the Minamata Convention on Mercury.

关键词： Nested GEOS-Chem model HgⅡgas-particle partitioning Organic aerosol Atmospheric mercury Mercury deposition flux

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Systematic control technologies for gaseous pollutants from non-ferrous metallurgy

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Journal of Environmental Sciences 2023年第1期123卷 65-82页

作者： Hui Liu Fenghua Shen Qingzhu Li Minneng Wen Hongliang Zhang Linhua Jiang Chenghang Zheng Yan Liu Tao Liu Liyuan Chai School of Metallurgy and Environment Central South UniversityChangsha 410083China Chinese National Engineering Research Center for Control&Treatment of Heavy Metal Pollution Changsha 410083China State Key Joint Laboratory of Environmental Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China College of Environmental Science and Engineering Tongji UniversityShanghai 200092China State Key Lab of Clean Energy Utilization State Environmental Protection Engineering Center for Coal-Fired Air Pollution ControlZhejiang UniversityHangzhou 310027China Key Laboratory of Ecological Metallurgy of Multi-metal Intergrown Ores of Ministry of Education School of MetallurgyNortheastern UniversityShenyang 110819China School of Resource and Environmental Engineering Wuhan University of Science and TechnologyWuhan 430081China

Air pollutant emissions represent a critical challenge in the green development of the non-ferrous metallurgy *** work studied the emission characteristics,formation mechanisms,phase transformation and separation of typical air pollutants,such as heavy metal particles,mercury,sulfur oxides and fluoride,during non-ferrous smelting.A series of purification technologies,including optimization of the furnace throat and hightemperature discharge,were developed to collaboratively control and recover fine particles from the flue gas of heavy metal smelting processes,including copper,lead and *** improvements have been realized in wet scrubbing technology for removing mercury,fluoride and SO_(2)from flue ***-liquid sulfidation technology by applying H_(2)S was invented to recycle the acid scrubbing wastewater more efficiently and in an eco-friendly *** on digital technology,a source reduction method was designed for sulfur and fluoride control during the whole aluminum electrolysis *** desulfurization technologies were developed for catalytic reduction of the sulfur content in petroleum coke at low temperature and catalytic reduction of SO_(2)to elemental *** work has established the technology for coupling multi-pollutant control and resource recovery from the flue gas from non-ferrous metallurgy,which provides the scientific theoretical basis and application technology for the treatment of air pollutants in the non-ferrous metallurgy industry.

关键词： Non-ferrous smelting Gaseous pollutant Flue gas purification Acid wastewater Heavy metal

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Mechanisms of arsenic enrichment in the water-soil-rice system with irrigation by high-arsenic groundwater and soluble organic fertilizer application

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Journal of Earth Science 2025年

作者： Haotian Yu Ying Jie Ruihua Shang Teng Ma College of Resource and Environmental Engineering， Wuhan University of Science and Technology State Environmental Protection Key Laboratory of Source Apportionment and Control of Aquatic Pollution， China University of Geosciences(Wuhan) Fujian Institute of Geological Survey

Arsenic （As） in the water-soil-rice system has increased globally， threatening global food security. Therefore， the environmental behavior of As in high-arsenic groundwater （GW） for irrigating rice fields needs to be studied urgently. This study aimed to identify the main stage of As absorption by rice and reveal the influence mechanism of As enrichment in the water-soil-rice system with irrigation by high-arsenic GW and the application of soluble organic fertilizers. To this end， pot culture experiments were performed and overlying water， pore water， soil and different part of rice were analyzed. The overlying water and pore water were the HCO3-Ca type. The chemical properties of the overlying water are mainly related to irrigation water. Irrigation with high-arsenic GW enhanced the reductive dissolution of iron oxides in soil， and increased the As concentration in pore water during the heading stage and filling stage. Irrigation with high-arsenic GW and organic fertilizers can increase the bioavailability of As in soil， which will enhance As enrichment in rice. The accumulation of As in both aboveground and underground parts of rice will increased gradually with the growth of rice. The main period of As uptake by rice roots ranged from the tillering to heading stages， and the transport of As in rice primarily occurred at the grain filling stage. The application of organic fertilizers had little effect on As transport in rice. The high-arsenic GW irrigation will decrease the transport of As from root to straw， and increase the transport of As from straw to grain.

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Ultrasonic enhancement of persulfate oxidation system governs emerging pollutants decontamination

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Green Energy & Environment 2024年第11期9卷 1666-1678页

作者： Yanpan Li Yanbo Zhou Yi Zhou National Engineering Research Center of Industrial Wastewater Detoxication and Resource Recovery State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical ProcessEast China University of Science and Technology130 Meilong RoadShanghai200237China Shanghai Engineering Research Center for Multi-media Environmental Catalysis and Resource Utilization East China University of Science and Technology130 Meilong RoadShanghai200237China Shanghai Institute of Pollution Control and Ecological Security Shanghai200092China

Emerging contaminants (ECs) are widely present in aquatic environments, posing potential risks to both ecosystems and human health. Theultrasound-assisted persulfate oxidation process has attracted considerable attention in the degradation of ECs due to its ability to generate bothsulfate radicals and cavitation effects, enhancing degradation effects. In this paper, the principle of ultrasonic synergistic Fenton-like oxidationsystem for degrading organic pollutants was reviewed, divided into homogeneous system, non-homogeneous system, and single-atom system toexplore the synergistic effect of ultrasound-enhanced persulfate technology in three aspects, and the effects of environmental factors such asultrasonic frequency and power, system pH, temperature, and initial oxidant concentration on the system's decontamination performance werediscussed. Finally, future research on ultrasonically activated persulfate technology is summarized and prospected.

关键词： Ultrasound Persulfate Emerging contaminants Reaction mechanism Synergistic effects

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The response of structure and nitrogen removal function of the biofilm on submerged macrophytes to high ammonium in constructed wetlands

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Journal of Environmental Sciences 2024年第8期142卷 129-141页

作者： Xue Jiang Mengmeng Wang Shunqing Yang Di He Fei Fang Liuyan Yang State Key Laboratory of Pollution Control and Resource Reuse School of the EnvironmentNanjing UniversityNanjing 210023China School of Resources and Environment Anqing Normal UniversityAnqing 246133China

The ammonium exceedance discharge from sewage treatment plants has a great risk to the stable operation of subsequent constructed wetlands(CWs).The effects of high ammonium shocks on submerged macrophytes and epiphytic biofilms on the leaves of submerged macrophytes in CWs were rarely mentioned in previous *** this paper,the 16S rRNA sequencing method was used to investigate the variation of the microbial communities in biofilms on the leaves of Vallisneria natans plants while the growth characteristics of *** plants were measured at different initial ammonium *** results demonstrated that the total chlorophyll and soluble sugar synthesis of *** plants decreased by 51.45%and 57.16%,respectively,and malondialdehyde content increased threefold after8 days if the initial NH_(4)^(+)-N concentration was more than 5 mg/*** density,bacterial quantity,dissolved oxygen,and pH increased with high ammonium *** average removal efficiencies of total nitrogen and NH_(4)^(+)-N reached 73.26%and 83.94%,*** heat map and relative abundance analysis represented that the relative abundances of phyla Proteobacteria,Cyanobacteria,and Bacteroidetes *** numbers of autotrophic nitrifiers and heterotrophic nitrification aerobic denitrification(HNAD)bacteria expanded in *** particular,HNAD bacteria of Flavobacterium,Hydrogenophaga,Acidovorax,Acinetobacter,Pseudomonas,Aeromonas,and Azospira had higher abundances than autotrophic nitrifiers because there were organic matters secreted from declining leaves of *** *** analysis of the nitrogen metabolic pathway showed aerobic denitrification was the main nitrogen removal ***,the nitrification and denitrification bacterial communities increased in epiphytic biofilms on submerged macrophytes in constructed wetlands while submerged macrophytes declined under ammonium shock loading.

关键词： Ammonium shock loading Biofilm Autotrophic nitrifiers Heterotrophic nitrification aerobic denitrification bacteria Submerged macrophyte

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High-solid anaerobic digestion of sewage sludge:achievements and perspectives

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Frontiers of Environmental Science & Engineering 2021年第4期15卷 1-18页

作者： Ying Xu Hui Gong Xiaohu Dai State Key Laboratory of Pollution Control and Resource Reuse School of Environmental Science and EngineeringTongji UniversityShanghai200092China Shanghai Institute of Pollution Control and Ecological Security Shanghai200092China

High-solid anaerobic digestion(HS-AD)has been applied extensively during the last few decades for treating various organic wastes,such as agricultural wastes,organic fractions of municipal solid wastes,and kitchen ***,the application of HS-AD to the processing of sewage sludge(SS)remains limited,which is largely attributable to its poor process stability and *** research has been conducted to attempt to surmount these *** this review,the main factors affecting process stability and performance in the HS-AD of SS are comprehensively reviewed,and the improved methods in current use,such as HS sludge pre-treatment and anaerobic co-digestion with other organic wastes,are ***,this paper also discusses the characteristics of substance transformation in the HS-AD of SS with and without thermal *** has shown that the HS effect is due to the presence of high concentrations of substances that may inhibit the function of anaerobic microorganisms,and that it also results in poor mass transfer,a low diffusion coefficient,and high ***,knowledge gaps in the current research on HS-AD of SS are *** on these,it proposes that future efforts should be devoted to standardising the definition of HS sludge,revealing the law of migration and transformation of pollutants,describing the metabolic pathways by which specific substances are degraded,and establishing accurate mathematical ***,developing green sludge dewatering agents,obtaining high value-added products,and revealing effects of the above two on HS-AD of SS can also be considered in future.

关键词： High-solid effect Anaerobic fermentation Methane production Biodegradability Sludge treatment

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Reproductive Toxicities of Tetradecyltrimethylammonium Chloride and Tetradecyltrimethylammonium Bromide on Caenorhabditis elegans over Four Consecutive Generations

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Chemical Research in Chinese Universities 2024年第6期40卷 1060-1067页

作者： ZHANG Jing DING Ruoqi YU Zhenyang Ecological Technique and Engineering College Shanghai Institute of TechnologyShanghai 201418P.R.China Jiaxing Tongji Institute for Environment Jiaxing 314051P.R.China State Key Laboratory of Pollution Control and Resource Reuse Key Laboratory of Yangtze River Water EnvironmentMinistry of EducationCollege of Environmental Science and EngineeringTongji UniversityShanghai 200092P.R.China

Quaternary ammonium compounds (QACs) become emerging pollutants and their toxicities earn increasing *** far,their reproductive toxicities were poorly investigated,and their effects over generations were even less *** the present study,reproductive toxicities of two QACs,i.e.,tetradecyltrimethylammonium chloride (TTAC);tetradecyltrimethylammonium bromide (TTAB) were studied on Caenorhabditis elegans with a consecutive exposure over four generations (from F1 to F4).The effects of TTAC on total and initial reproduction showed stimulation and inhibition,which oscillated from F1 to *** effects of TTAB on the total reproduction commonly showed stimulation over generations with the greatest stimulation in F2,and it inhibited the initial reproduction but stimulated the reproduction *** exploration demonstrated that TTAC and TTAB significantly disturbed the levels of spermatocyte protein 8 (SPE8);sperm transmembrane protein 9 (SPE9);vitellogenin (Vg);major sperm protein (MSP);ephrin receptor protein tyrosine kinase (VAB-1);the expressions of vab-1,ceh-18,set-2,met-2 and *** disturbances demonstrated that both QACs impacted the reproductive processes via oocyte meiosis,gonadal support and germline ***,the effects of TTAC and TTAB in parents were connected with those in the offspring,which highlighted the roles of reproduction in connecting *** addition,different effects between TTAC and TTAB demonstrated the anionic influences on the QACs’ toxicities.

关键词： Multigenerational effect Oocyte meiosis Gonadal support Germline development Anionic influence

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Occurrence, partition behavior, source and ecological risk assessment of nitro-PAHs in the sediment and water of Taige Canal, China

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Journal of Environmental Sciences 2023年第2期124卷 782-793页

作者： Jijie Kong Tao Ma Xiaoyu Cao Weidi Li Fengxiao Zhu Huan He Cheng Sun Shaogui Yang Shiyin Li Qiming Xian School of Environment Nanjing Normal UniversityNanjing 210023China School of Geography Nanjing Normal UniversityNanjing 210023China The State Key Laboratory of Pollution Control and Resource Reuse School of the EnvironmentNanjing UniversityNanjing 210023China Fujian Provincial Key laboratory of Eco-Industrial Green Technology College of Ecological and Resource EngineeringWuyi UniversityWuyishan 354300China Nanjing Institute of Environmental Sciences Ministry of Ecology and EnvironmentNanjing 210042China

Nitrated polycyclic aromatic hydrocarbons(NPAHs)are widespread organic pollutants that possess carcinogenic and mutagenic properties,so they may pose a risk to the environment and human *** this study,the concentrations of 15 NPAHs and 16 polycyclic aromatic hydrocarbons(PAHs)in 30 surface water samples and 26 sediment samples were measured in 2018 from the Taige Canal,one of the main rivers flowing into Taihu Lake,*** total NPAH concentrations in water and sediment ranged from 14.7 to 235 ng/L and 22.9 to 96.5 ng/g dw,respectively.9-nitrophenanthrene(nd–76.3 ng/L)was the dominant compound in surface water,while 2+3-nitrofluoranthene(1.73–18.1 ng/g dw)dominated in *** PAHs,concentration ranging from 1,097 to 2,981 ng/L and 1,089 to 4,489 ng/g dw in surface water and sediment,*** was a strong positive correlation between the log octanol-water partition coefficient(Kow)and log sediment-water partition coefficient due to hydrophobic *** fugacity fraction value increased with the decrease of log Kow,and chrysene was transferred from water into *** residual NPAHs in surface water and sediment of the Taige Canal have partial *** engine and coal combustion emissions were probably the principal sources of NPAHs in surface water and *** results of ecological risk assessment showed that some NPAHs inwater(e.g,1-nitropyrene and 6-nitrochrysene)and sediment(e.g.,2-nitrobiphenyl,5-nitroacenaphthene,9-nitrophenanthrene and 2+3-nitrofluoranthene)had moderate ecological risks,which should be of concern.

关键词： Nitrated polycyclic aromatic hydrocarbons(NPAHs) Occurrence Partition behavior Source apportionment Ecological risk assessment

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A novel structure of quasi-monolayered NiCo-bimetal-phosphide for superior electrochemical performance

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Journal of Energy Chemistry 2022年第11期31卷 203-211,I0007页

作者： Long Zhao Ming Wen Yakun Tian Qingsheng Wu Yongqing Fu School of Chemical Science and Engineering Shanghai Key Laboratory of Chemical Assessment and SustainabilityState Key Laboratory of Pollution Control and Resource ReuseTongji UniversityShanghai 200092China Faculty of Engineering and Environment Northumbria UniversityNewcastle upon TyneNE18STUnited Kingdom

Bimetallic transition metal phosphides(TMPs)as potential candidates for superior electrochemical performance are still facing great challenges in the controllable preparation of two-dimensional(2 D)structures with high aspect ***,a novel structure of quasi-monolayered NiCo-bimetal-phosphide(NiCoP)has been designed and successfully synthesized by the newly developed process combined with ultrasonic-cavitation and *** is the first time to break through the controllable preparation of 2 D bimetal-phosphides with a thickness of 0.98 nm in *** on the advantages of 2 D quasi-monolayer structure with dense crystalline-amorphous interface and the reconfigured electronic structure between Ni^(δ+)/Co^(δ+)and P^(δ-),the optimized Ni_(5%)CoP exhibits an outstanding bifunctional performance for electrocatalyzing both hydrogen evolution reaction and oxygen evolution reaction in an alkaline ***_(5%)CoP presents lower overpotentials and voltage of 84 mV&259 mV and1.48 V at the current density of 10 mA cm^(-2)for HER&DER and overall water splitting,respectively,which are superior to most other reported 2 D *** work provides a new strategy to optimize the performance of electrolytic water for bimetal-phosphates and it may be of significant value in extending the design of other ultrathin 2 D structured catalysts.

关键词： 2D quasi-monolayer Hydrogen evolution reaction Bimetal phosphide Oxygen evolution reaction Ultrasonic-cavitation

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Highly stable carbon-coated nZVI composite Fe0@RF-C for efficient degradation of emerging contaminants

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Environmental Science and Ecotechnology 2024年第6期22卷 233-244页

作者： Guizhou Xu Lin Sun Yizhou Tu Xiaolei Teng Yumeng Qi Yaoyao Wang Aimin Li Xianchuan Xie Xueyuan Gu State Key Laboratory of Pollution Control and Resource Reuse School of the EnvironmentNanjing UniversityNanjing210023China Key Laboratory of Poyang Lake Environment and Resource Utilization Engineering Research Center of Watershed Carbon NeutralizationMinistry of EducationSchool of Resource and EnvironmentNanchang UniversityNanchang330031China Nanjing University&Yancheng Academy of Environment Protection Technology and Engineering Nanjing210023China Jiangxi Nanxin Environmental Protection Technology Co.LTD Jiujiang CityJiangxi Province330300China

Nanoscale zerovalent iron(nZVI)has garnered significant attention as an efficient advanced oxidation activator,but its practical application is hindered by aggregation and *** nZVI with carbon can effectively addresses these issues.A simple and scalable production method for carbon-coated nZVI composite is highly *** anti-oxidation and catalytic performance of carbon-coated nZVI composite merit in-depth *** this study,a highly stable carbon-coated core-shell nZVI composite(Fe0@RF-C)was successfully prepared using a simple method combining phenolic resin embedding and carbothermal ***0@RF-C was employed as a heterogeneous persulfate(PS)activator for degrading 2,4-dihydroxybenzophenone(BP-1),an emerging *** to commercial nZVI,Fe0@RF-C exhibited superior PS activation performance and oxidation *** 95%of BP-1 was removed within 10 min in the Fe0@RF-C/PS *** carbon layer promotes the enrichment of BP-1 and accelerates its degradation through singlet oxygen oxidation and direct electron transfer *** study provides a straightforward approach for designing highly stable carbon-coated nZVI composite and elucidates the enhanced catalytic performance mechanism by carbon layers.

关键词： Nanoscale zerovalent iron Carbon-coated nZVI Persulfate BP-1 Enhanced degradation

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