Journal of Environmental Sciences-china最新文献_第4页

Characterization and PAH removal performance of microbe-immobilized biochars derived from different feedstocks 不同原料微生物固定化生物炭的表征及去除多环芳烃的性能

IF 6.3 2区环境科学与生态学

Journal of Environmental Sciences-china Pub Date : 2025-05-13 DOI: 10.1016/j.jes.2025.05.026

Anqi Sun , Jiaqing Liang , Haixuan Zhou , Frederic Coulon , Yanwei Hou , Chao Cai

{"title":"Characterization and PAH removal performance of microbe-immobilized biochars derived from different feedstocks","authors":"Anqi Sun , Jiaqing Liang , Haixuan Zhou , Frederic Coulon , Yanwei Hou , Chao Cai","doi":"10.1016/j.jes.2025.05.026","DOIUrl":"10.1016/j.jes.2025.05.026","url":null,"abstract":"<div><div>Microbial degradation is the primary mechanism for purifying polycyclic aromatic hydrocarbon (PAH) contamination in environments, and biochar immobilization is an effective technology to enhance biodegradation, but the process parameters of the immobilization technology still require further systematic evaluation. Here, biochars derived from pig manure (PM), bamboo (BB), rice straw (RS), and soybean straw (SS) were used as carriers of <em>Mycobacterium</em> sp. ZL7, and the optimal biochar dosage of 1:30 (<em>w</em>/<em>V</em>) and immobilization time of 24 h were determined. The immobilization effects followed the order of RS > SS > PM > BB. Scanning electron microscopy and physicochemical properties revealed that porous structures acted as shelters for bacteria, and high nitrogen content, large pore size and high-water holding capacity played important driving roles in immobilization. In the single-substrate system, pyrene removal rates of the PM-, RS- and SS-immobilized materials were greater than 96 %, which were significantly higher than those of the biochar alone or the free strain. An orthogonal design experiment in historically PAH-contaminated soil further revealed that, compared with free strains, immobilized materials combined with high moisture content and moderate salicylic acid or Brij 30 can effectively increase the abundance of bacteria and the <em>nidA</em> gene, and enhance the dehydrogenase and polyphenol oxidase activities. The removal rate of total PAHs increased by 8.53 %-30.45 % after 24 d. Moreover, biochar with strong immobilization capacity showed better PAH removal effects. This study provides a scientific basis and practical reference for biochar-immobilized microorganisms to enhance the self-purification of PAH-contaminated soil.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"160 ","pages":"Pages 105-115"},"PeriodicalIF":6.3,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144989316","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Inhibitory effects of biofilms on the adsorption of per- and polyfluorinated alkyl substances by biological activated carbon in practical drinking water treatment plants 生物膜对生物活性炭吸附全氟和多氟烷基物质的抑制作用

IF 6.3 2区环境科学与生态学

Journal of Environmental Sciences-china Pub Date : 2025-05-13 DOI: 10.1016/j.jes.2025.05.029

Zixin Pan , Zhenguo Qi , Panyue Zhang , Yao Zhang , Wenxian Wang , Xin Huang , Baoyou Shi

{"title":"Inhibitory effects of biofilms on the adsorption of per- and polyfluorinated alkyl substances by biological activated carbon in practical drinking water treatment plants","authors":"Zixin Pan , Zhenguo Qi , Panyue Zhang , Yao Zhang , Wenxian Wang , Xin Huang , Baoyou Shi","doi":"10.1016/j.jes.2025.05.029","DOIUrl":"10.1016/j.jes.2025.05.029","url":null,"abstract":"<div><div>Although activated carbon filters are thought to be the best way to remove per- and polyfluorinated alkyl substances (PFAS), it is yet unknown how biofilms affect PFAS removal. This study first examined how the removal of PFAS in full-scale drinking water treatment plants (DWTPs) was impacted by biofilm from biological activated carbon (BAC) of varying depths and carbon ages. PFAS desorption from BAC was visible, but at this point, BAC could still remove dissolved organic matter (DOM) efficiently. Studies have demonstrated that the use of activated carbon filters can dramatically lower the content of PFAS in water, with the amount of PFAS reducing as the filter's depth grows and its use duration increases. Additionally, pore-clogging becomes more noticeable as the biofilm ages, which reduces BAC's capacity to eliminate PFAS and hinders PFAS desorption. Furthermore, the adsorption process of PFAS may be impeded by the secretion of biofilms, which are composed of proteins and polysaccharides. Based on the analysis above, it can be the adsorption of PFAS by BAC is significantly inhibited by biofilms, according to another research. This provides theoretical direction for improving the removal effectiveness of PFAS in DWTPs.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"160 ","pages":"Pages 330-335"},"PeriodicalIF":6.3,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145099570","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mobile MAX-DOAS measurements and source analysis of NO2, HCHO, and HONO during the Chengdu 2023 FISU world university games 2023年成都FISU世界大学生运动会期间NO2、HCHO和HONO的移动MAX-DOAS测量及来源分析

IF 6.3 2区环境科学与生态学

Journal of Environmental Sciences-china Pub Date : 2025-05-11 DOI: 10.1016/j.jes.2025.04.051

Qijin Zhang , Chengzhi Xing , Miao Feng , Yinshuo Ding , Zhongmou Sun , Yikai Li , Haochen Peng , Wei Tan , Zhiguo Zhang , Tianjun Du , Cheng Liu

{"title":"Mobile MAX-DOAS measurements and source analysis of NO2, HCHO, and HONO during the Chengdu 2023 FISU world university games","authors":"Qijin Zhang , Chengzhi Xing , Miao Feng , Yinshuo Ding , Zhongmou Sun , Yikai Li , Haochen Peng , Wei Tan , Zhiguo Zhang , Tianjun Du , Cheng Liu","doi":"10.1016/j.jes.2025.04.051","DOIUrl":"10.1016/j.jes.2025.04.051","url":null,"abstract":"<div><div>To maintain air quality during the 31st World University Games, Chengdu employed a range of monitoring and control strategies in 2023. High-resolution regional pollutant distributions were reconstructed by integrating the vertical column densities (VCDs) from mobile MAX-DOAS measurements with Gaussian process regression analysis. The correlation between the spatial distribution derived from MAX-DOAS and that of GEMS and TROPOMI satellite data exceeded 0.6. This paper explores the impact of air quality improvements during the games on the sources of HCHO and the formation process of HONO. During the control period, primary emissions and secondary formations of HCHO contributed 50.85 % ± 24.24 % and 42.81 % ± 7.57 % to the total atmospheric HCHO, respectively. The study indicates that with improved air quality, HCHO primary emissions decrease while secondary emissions and atmospheric radiation transmission intensities rise. It is found that HONO always appears under the condition of high aerosol optical depth (AOD) and NO<sub>2</sub>, but high NO<sub>2</sub> concentration and AOD are not necessarily accompanied by high concentrations of HONO. To assess the influence of temperature and humidity on the formation of HONO from NO<sub>2</sub>, we calculated the emission rates <span><math><mrow><mrow><mstyle><mi>Δ</mi></mstyle><mtext>HONO</mtext></mrow><mo>/</mo><mrow><mstyle><mi>Δ</mi></mstyle><mi>N</mi></mrow><msub><mi>O</mi><mn>2</mn></msub></mrow></math></span> to quantify the impact of primary sources on total HONO concentrations. The analysis results show that the turning point of relative humidity is 65 % (60 %–70 %) and the turning point of temperature is 31 °C (30–32 °C). Lower temperatures and higher humidity levels were found to decrease the rate of secondary HONO formation from NO<sub>2</sub>.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"160 ","pages":"Pages 517-527"},"PeriodicalIF":6.3,"publicationDate":"2025-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145220115","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Manganese residue harmlessness with the combination of manganese mineralizing microbes, CaO and CO2 锰矿化微生物、CaO和CO2联合作用下的锰渣无害化

IF 6.3 2区环境科学与生态学

Journal of Environmental Sciences-china Pub Date : 2025-05-10 DOI: 10.1016/j.jes.2025.05.007

Jiahao Pan , Chuan Wu , Yangtao Lv , Waichin Li , Jun Wang , Min Hu , Hongren Chen , Qi Zou , Shengguo Xue

{"title":"Manganese residue harmlessness with the combination of manganese mineralizing microbes, CaO and CO2","authors":"Jiahao Pan , Chuan Wu , Yangtao Lv , Waichin Li , Jun Wang , Min Hu , Hongren Chen , Qi Zou , Shengguo Xue","doi":"10.1016/j.jes.2025.05.007","DOIUrl":"10.1016/j.jes.2025.05.007","url":null,"abstract":"<div><div>Manganese residue, including electrolytic manganese residue (EMR) and electrolytic manganese dioxide residue (EMDR), have complicated compositions and are easily generated heavy metals (HMs) and ammonia nitrogen (NH<sub>4</sub><sup>+</sup>-N) pollution. In this study, HMs and NH<sub>4</sub><sup>+</sup>-N in manganese residue were stabilized and solidified using a combined remediation system of quicklime (CaO), carbon dioxide (CO<sub>2</sub>), and manganese mineralizing microbes. The sequencing of the manganese mineralizing microbes assemblage revealed that <em>Pseudomonas geniculata, Leclercia adecaarboxylata, Ochrobactrum</em> spp., and <em>Delftia tsuruhatensi</em>s comprised the majority of the assemblage species. Moreover, the manganese mineralizing microbes that were identified by screening and isolation exhibited significant metal resistance, metal absorption, and metal detoxifying abilities according to KEGG pathway level 2 analysis. The NH<sub>4</sub><sup>+</sup>-N levels in the manganese residue across all treatments exhibited a downward trend, meanwhile NH<sub>4</sub><sup>+</sup>-N in the manganese mineralizing microbes treatment groups were all lower than the GB standard (GB8979–1996). The findings of the experiment indicated that when manganese mineralizing microbes (1 % M), 0.2 L/min CO<sub>2</sub> flow, and a carbonization time of >15 min were added, the greatest effect of the addition of the innocuous manganese residue was obtained. The innocuous manganese residue exhibited agglomeration and may be utilized as a filler material, according to the XRD, SEM, and EDS results. In this study, manganese mineralizing microbes, CaO and CO₂ treated HMs and NH₄⁺-N in manganese residue, achieving general industrial solid waste standards, demonstrating potential for large-scale harmless treatment.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"160 ","pages":"Pages 185-196"},"PeriodicalIF":6.3,"publicationDate":"2025-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145045052","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The enhanced role of formic acid on sulfuric acid-ammonia-driven nucleation in forest regions and polluted city areas 甲酸对森林地区和污染城市地区硫酸-氨驱动成核的增强作用

IF 6.3 2区环境科学与生态学

Journal of Environmental Sciences-china Pub Date : 2025-05-10 DOI: 10.1016/j.jes.2025.05.025

Shasha Chen , Rongrong Li , Chengyan Zhang , Shuqin Wei , Rui Wang , Biwu Chu , Xiaomeng Zhang , Hao Li , Tianlei Zhang

{"title":"The enhanced role of formic acid on sulfuric acid-ammonia-driven nucleation in forest regions and polluted city areas","authors":"Shasha Chen , Rongrong Li , Chengyan Zhang , Shuqin Wei , Rui Wang , Biwu Chu , Xiaomeng Zhang , Hao Li , Tianlei Zhang","doi":"10.1016/j.jes.2025.05.025","DOIUrl":"10.1016/j.jes.2025.05.025","url":null,"abstract":"<div><div>Formic acid (FA) is particularly prominent for its ubiquity and structural simplicity among atmospheric organic acids, and exerts a significant influence on atmospheric acidity. However, the potential contribution of FA to the primary stage of new particle formation (NPF) remains unclear. Herein, molecular dynamics (MD), density functional theory (DFT) and the atmospheric cluster dynamics code (ACDC) model have been utilized to evaluate the mechanism of FA participation in atmospheric SA (sulfuric acid)-A (ammonia) clusters. The MD simulations qualitatively suggest that FA can aggregate with SA and A to form larger clusters, and the aggregation time of the largest clusters decreases as the temperature decreases. The DFT and ACDC findings indicate that the ternary SA-A-FA system is thermodynamically more stable at low temperatures (238.15 K). Simultaneously, in regions with low temperatures, high [FA] (10<sup>11</sup> molecules/cm<sup>3</sup>), low [SA] (10<sup>6</sup> molecules/cm<sup>3</sup>) and high [A] (10<sup>11</sup> molecules/cm<sup>3</sup>), FA significantly enhances SA-A cluster formation rates. The low-temperature NPF mechanism implies that FA could facilitate the growth of pure SA-A clusters via a “catalytic” mechanism and play an integral role in the genesis of critical clusters as a “participant”. This dual role differs from the “catalytic” role exhibited by malonic and glycolic acids in our previous studies. This discovery could help identify the sources of unexplained NPFs in regions with high FA concentrations, such as densely forested areas with abundant vegetation, regions affected by biomass burning, or periods with elevated vehicle exhaust emissions and the release of volatile organic compounds like isoprene and terpenoids.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"160 ","pages":"Pages 621-628"},"PeriodicalIF":6.3,"publicationDate":"2025-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145219967","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Succession of algae population and blooms with their driving factors in China’s lakes 中国湖泊藻类种群和华度演替及其驱动因素

IF 6.3 2区环境科学与生态学

Journal of Environmental Sciences-china Pub Date : 2025-05-09 DOI: 10.1016/j.jes.2025.05.012

Jing Cao , Zhaosheng Chu , Haifeng Jia , Binghui Zheng

{"title":"Succession of algae population and blooms with their driving factors in China’s lakes","authors":"Jing Cao , Zhaosheng Chu , Haifeng Jia , Binghui Zheng","doi":"10.1016/j.jes.2025.05.012","DOIUrl":"10.1016/j.jes.2025.05.012","url":null,"abstract":"<div><div>Algae play an important role in lake ecosystems, and algal succession is vital to studying the mechanism of algal bloom outbreaks. This paper provides a comprehensive review of algae blooms development, bloom-forming algae succession, the diversity of common blooms-forming algae, and key drivers for algae succession in Chinese lakes, based on an extensive literature survey and data sets. Furthermore, it summarizes the influencing factors for algae blooms and bloom-forming algae succession in five lake zones of China. The results indicated that the number of research publications on algal blooms in China constituted the largest share of global research, representing 41.9 %. The predominant types of algae blooms in all publications were cyanobacterial blooms, followed by dinoflagellate blooms. The blooms-forming algae in China's lakes have experienced a clear succession pattern: <em>Bacillariophyta, Chlorophyta</em> and <em>Pyrrophyta</em> were dominated in the initial investigations; dominance of <em>Microcystis, Anabaena,</em> dinoflagellates and diatoms increased significantly since1960s; in the past decade, <em>Cylindrospermopsis</em> and dinoflagellates expanded. Current research on algae blooms in Chinese lakes mainly focuses on cyanobacterial blooms, especially <em>Microcystis</em> blooms, while researches on filamentous cyanobacterial blooms and other algae blooms is still insufficient. This systematic review will help researchers to understand the basic features such as the occurrence, the diversity, the physio-ecology and the driving factors of common blooms-forming algae, will further provide a scientific basis for their control in various lake regions.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"160 ","pages":"Pages 13-26"},"PeriodicalIF":6.3,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144879189","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Microwave-assisted synthesis of CQDs/ZnO hollow microspheres for complete NOx oxidation under visible light 可见光下CQDs/ZnO空心微球的微波辅助合成

IF 5.9 2区环境科学与生态学

Journal of Environmental Sciences-china Pub Date : 2025-05-09 DOI: 10.1016/j.jes.2025.05.018

Yan Liu , Xianjin Shi , Long Cui , Pengge Wang , Zhenbo Zhang , Li Chen , Zhenyu Wang

{"title":"Microwave-assisted synthesis of CQDs/ZnO hollow microspheres for complete NOx oxidation under visible light","authors":"Yan Liu , Xianjin Shi , Long Cui , Pengge Wang , Zhenbo Zhang , Li Chen , Zhenyu Wang","doi":"10.1016/j.jes.2025.05.018","DOIUrl":"10.1016/j.jes.2025.05.018","url":null,"abstract":"<div><div>The development of ZnO-based composites with high charge separation and effective inhibition of toxic by-products is admirable for effective photocatalysis of nitrogen oxides (NO<em><sub>x</sub></em>) oxidation. In this study, carbon quantum dots (CQDs)/ZnO hollow microspheres, synthesized through a rapid microwave-assisted method, achieved over a 30-fold higher NO<em><sub>x</sub></em> removal efficiency compared to ZnO, with complete inhibition of NO<sub>2</sub> by-products and good durability. The enhanced photocatalytic activity was ascribed to the unique role of CQDs, as revealed by <em>in-situ</em> photoelectric techniques. Results demonstrated that the electron directional migration from ZnO to CQDs at the composite interface accounts for the enhanced charge separation. Active free radicals for NO<em><sub>x</sub></em> oxidation were identified, and <em>in-situ</em> diffuse reflectance infrared Fourier transform spectroscopy analysis elucidated the conversion pathways of NO<em><sub>x</sub></em> oxidation under visible light irradiation. This work sheds light on the mechanisms of electron transfer and charge separation at the composite interface, offering guidance for designing superior ZnO-based photocatalysts for complete NO<em><sub>x</sub></em> removal.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"159 ","pages":"Pages 1-9"},"PeriodicalIF":5.9,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144653282","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The primary sources of ROx radicals in atmosphere: Oxidative capacity and self-purifying effect 大气中氧自由基的主要来源：氧化能力和自净作用

IF 6.3 2区环境科学与生态学

Journal of Environmental Sciences-china Pub Date : 2025-05-09 DOI: 10.1016/j.jes.2025.05.013

Gaojie Chen , Ziyi Lin , Xiaoting Ji , Lingling Xu , Xiaolong Fan , Mengren Li , Youwei Hong , Jinsheng Chen

{"title":"The primary sources of ROx radicals in atmosphere: Oxidative capacity and self-purifying effect","authors":"Gaojie Chen , Ziyi Lin , Xiaoting Ji , Lingling Xu , Xiaolong Fan , Mengren Li , Youwei Hong , Jinsheng Chen","doi":"10.1016/j.jes.2025.05.013","DOIUrl":"10.1016/j.jes.2025.05.013","url":null,"abstract":"<div><div>Ambient ozone (O<sub>3</sub>) is generated through the reactions of nitrogen oxides and volatile organic compounds (VOCs) in sunlight, and the primary sources of RO<em><sub>x</sub></em> radicals play a very important role in O<sub>3</sub> photochemistry. However, as major precursors of RO<em><sub>x</sub></em> radicals, the systematical evaluation of ClNO<sub>2</sub>, HCHO, and HONO impacts on O<sub>3</sub> photochemistry remains limited. Here, we utilized the observations of ClNO<sub>2</sub>, HCHO, and HONO conducted in a coastal city of Southeast China during a photochemical O<sub>3</sub> pollution episode, combined with model simulations to elucidate their impacts on RO<em><sub>x</sub></em> radicals and atmospheric oxidation capacity (AOC), as well as O<sub>3</sub> formation. Decreased concentrations of ClNO<sub>2</sub> and HONO were observed after sunrise, while HCHO concentrations peaked in the daytime. HCHO photolysis contributed the largest (∼25 %) to RO<em><sub>x</sub></em> radical production around noon, while HONO photolysis (∼47 %) dominated RO<em><sub>x</sub></em> radical production in the morning and late afternoon, and VOCs consumed by Cl radical released via ClNO<sub>2</sub> photolysis was more important (∼10 %) in the early morning, similar to their effects on the AOC levels. The results of model simulations indicated that HCHO photolysis greatly enhanced the photochemical formation of O<sub>3</sub>, followed by HONO and ClNO<sub>2</sub> photolysis. Except for reducing VOCs due to a VOC-limited regime, the impacts of HCHO photolysis as primary RO<em><sub>x</sub></em> sources should be valued to inhibit the intensification of O<sub>3</sub> pollution. Our study stressed the importance of primary RO<em><sub>x</sub></em> sources for O<sub>3</sub> photochemistry in coastal regions, provided new insights into elucidating the self-purifying effect of the atmospheric environment.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"160 ","pages":"Pages 490-496"},"PeriodicalIF":6.3,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145220113","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Characteristics of VOCs in coating materials manufacturing and contributions to environmental implication based on on-site sampling in Shandong Province 山东省涂料生产过程中挥发性有机化合物的特征及其对环境的影响

IF 6.3 2区环境科学与生态学

Journal of Environmental Sciences-china Pub Date : 2025-05-09 DOI: 10.1016/j.jes.2025.05.014

Sisi Huo , Xu Guan , Jiao Li , Xin Zhang , Jie Li , Yanbo Peng , Anbao Gong , Huan Xie , Shurui Chen , Qingzhu Zhang

{"title":"Characteristics of VOCs in coating materials manufacturing and contributions to environmental implication based on on-site sampling in Shandong Province","authors":"Sisi Huo , Xu Guan , Jiao Li , Xin Zhang , Jie Li , Yanbo Peng , Anbao Gong , Huan Xie , Shurui Chen , Qingzhu Zhang","doi":"10.1016/j.jes.2025.05.014","DOIUrl":"10.1016/j.jes.2025.05.014","url":null,"abstract":"<div><div>Volatile organic compounds (VOCs) are a significant class of air contaminants, and their anthropogenic emissions in the environment are crucial for understanding and controlling VOC pollution and associated ozone formation. Numerous studies have assessed VOC emissions from critical industrial sources in China, but understanding VOC emissions within the coating materials manufacturing industry remains limited. This study elucidates the characteristics of VOC emissions from the coating materials manufacturing industry through a comprehensive sector-based field sampling, constructs the emission source profiles, quantifies provincial-level VOC emissions, and evaluates the potential health risks to workers. According to experimental results, the main emissions from water-based coatings are oxygenated volatile organic compounds, which significantly contribute to ozone (O<sub>3</sub>) formation. The highest emissions from solvent-based coatings are aromatics. Health risk analysis revealed potential health impacts on workers in the workshop, indicating that solvent-based workshops posing a higher carcinogenic risk than water-based coating workshops. Strict control measures for fugitive emissions should be implemented to mitigate human health risks. Our results also demonstrate that the VOC emissions from coating materials manufacturing are mainly influenced by regional imbalances in coating production in China. Additionally, we explore the •OH and Cl• radical chemistry with ethyl acetate, revealing that Cl• is more likely to undergo H-abstraction reactions (HAA) than •OH. This study provides a source profile of the coating materials manufacturing industry and offers guidance on minimizing environmental impacts and promoting healthier working environments in the industry.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"160 ","pages":"Pages 497-507"},"PeriodicalIF":6.3,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145220027","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Conductive materials change the composition and activity of butyrate-degrading enrichment cultures with hydrogen as the main electron shuttle 导电材料改变了以氢为主要电子穿梭体的丁酸酯降解富集培养物的组成和活性

IF 6.3 2区环境科学与生态学

Journal of Environmental Sciences-china Pub Date : 2025-05-09 DOI: 10.1016/j.jes.2025.05.015

Cátia S.N. Braga , João C. Sequeira , M. Salomé Duarte , Gilberto Martins , Inês A.C. Pereira , Luciana Pereira , M. Madalena Alves , Andreia F. Salvador

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