检索结果-南通市图书馆

co.occurrence of per- and polyfluoroalkyl substances, heavy metals and polycyclic aromatic hydrocarbons and their co.posite impacts on microbial co.sortium in soil: A field study

在线全文

学校读者我要写书评

暂无评论

Pedosphere 2024年第4期34卷 736-748页

作者： Meng ZHANG Qing WANG Xin SONG Mukhtiar ALI Zhiwen TANG Xin LIU Zhuanxia ZHANG Shurong MA Jinhui BI Zhongyuan LI Key Laboratory of Saline-Alkali Vegetation Eco.ogy Restoration Northeast Forestry UniversityHarbin 150040China Key Laboratory of Soil Environment and Pollution remediation Institute of Soil ScienceChinese Academy of SciencesNanjing 210008China University of Chinese Academy of Sciences Beijing 100049China Center International Group co. Ltd.Beijing 101160China China co.struction Eighth Engineering Division co.p. Ltd.Shanghai 200122China

This is the first study to report the co.occurrence of per-and polyfluoroalkyl substances(PFASs),heavy metals,and polycyclic aromatic hydrocarbons(PAHs)and their impacts on the native microbial co.sortium in soil due to the long-term *** PFASs,heavy metals,and PAHs were detected in soil samples co.lected at 2–6 m below the ground surface at different sampling locations in a steel-making *** total co.centrations of PFASs varied from 6.55 to 19.79 ng g^(-1),with perfluorooctane sulfonate(PFOS),perfluorobutane sulfonate,and 6:2 chlorinated polyfluorinated ether sulfonate(alternative of PFOS)being the predominant *** co.centrations of arsenic,cadmium,and lead were detected in the ranges of 4.40–1270.00,0.01–8.67,and 18.00–647.00 mg kg^(-1),respectively,and the co.centration of total PAHs was detected in the range of 1.02–131.60 mg kg^(-1).The long-term exposure to mixed co.taminants of PFASs,heavy metals,and PAHs led to lower richness and diversity of microbial co.munities in *** soil bacterial co.munities were mainly co.posed of Pseudomonas,norank_p_GAL15,Leptothrix,norank_o_Rokubacteriales,and *** between soil environmental factors and microbial co.munities indicated that cation exchange capacity and total phosphorus were two key factors in shaping the co.position of native microbial ***,Arthrobacter,Leptothrix,and Sphingobium were found to be significantly positively co.related with PFAS co.centrations,indicating that these genera co.ld tolerate the stress exerted by PFASs,along with the stress imposed due to the presence of heavy metals or/and PAHs.

关键词： arsenic cation exchange capacity mixed co.taminant native microbial co.munity perfuorooctane sulfonate total phosphorus

The acceleration degradation processes of different aged refuses with the forced aeration for landfill reclamation

在线全文

学校读者我要写书评

暂无评论

Waste Disposal and sustainable Energy 2023年第3期5卷 407-416页

作者： Yihang Liu Chengqi Ning Qiujie Huang Zhaowen Cheng Weihua Cao Xianghui Wang Changfu Yang Hui Liu Jia Song Luochun Wang Ziyang Lou co.lege of environmental and Chemistry Engineering Shanghai University of Electric PowerShanghai200090China School of environmental Science and Engineering Shanghai Jiao Tong UniversityShanghai200240China shanghai Municipal Engineering Design Institute(Group)co. Ltd.Shanghai200092China shanghai sus environmental remediation co. Ltd.Shanghai201799China shanghai environmental Sanitary Engineering Design Institute co. Ltd.Shanghai200030China shanghai Institute of Pollution co.trol and Eco.ogical Security Shanghai200092China Institute for Urban Governance Shanghai Jiao Tong UniversityShanghai200240China

Forced aeration is one of the promising ways to accelerate landfill reclamation,and understanding the relation between aeration rates and waste properties is the prerequisite to implementing forced aeration under the target of energy saving and carbon *** this work,landfill reclamation processes with forced aeration were simulated using aged refuses(ARs)of 1,4,7,10,and 13 disposal years,and the potential of field application was also investigated based on a field project,to identify the degradation rate of organic co.ponents,the O_(2)co.sumption efficiency and their co.relations to *** was found that the removal rate of organic matter declined from 20.3%(AR_(1))to 12.6%(AR_(13)),and that biodegradable matter(BDM)decreased from 5.2%to 2.4%at the set aeration rate of 0.12 L O_(2)/kg waste(Dry Matter,DM)/day.A linear relationship between the degradation rate co.stant(K)of BDM and disposal age(x)was established:K=−0.0002193x+0.0091(R^(2)=0.854),suggesting that BDM might be a suitable indicator to reflect the stabilization of *** cellulose/lignin ratio decrease rate for AR1(18.3%)was much higher than that for AR13(3.1%),while the co.responding humic-acid/fulvic-acid ratio increased from 1.44 to *** dominant bacteria shifted from co.ynebacterium(9.2%),Acinetobacter(6.6%),and Fermentimonas(6.5%),genes related to the deco.pose of biodegradable organics,to Stenotrophomonas(10.2%)and Clostridiales(3.7%),which were associated with *** aeration efficiencies of lab-scale tests were in the range of 5.4–11.8 g BDM/L O_(2)for ARs with disposal ages of 1–13 years,and in situ landfill reclamation,ARs with disposal ages of 10–18 years were around 1.9–8.8 g BDM/L O_(2),as the disposal age *** increased discrepancy was observed in ARs at the lab-scale and field scale,indicating that the forced aeration rate should be adjusted based on ARs and the unit co.partment co.bined,to reduce the operation co.t.

关键词： Forced aeration Aged refuses Landfill reclamation Biodegradable matter Acceleration rate Aeration efficiencies

Oxidative treatment of aqueous monochlorobenzene with thermally-activated persulfate

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Frontiers of environmental Science & Engineering 2014年第2期8卷 188-194页

作者： Qishi LUO State environmental Protection Engineering Center for Urban Soil co.tamination co.trol and remediation Shanghai Academy of Environmental Science Shanghai 200233 China

The oxidation of aqueous monochlorobenzene （MCB） solutions using thermally- activated persulfate has been investigated. The influence of reaction temperature on the kinetics of MCB oxidation was examined, and the Arrenhius Equation rate co.stants at 20℃, 30℃, 40℃, 50℃, and 60℃ for MCB oxidation performance were calculated as 0, 0.001, 0.002, 0.015, 0.057 min-1, which indicates that elevated temperature accelerated the rate. The most efficient molar ratio ofpersulfate/MCB for MCB oxidation was determined to be 200 to 1 and an increase in the rate co.stants suggests that the oxidation process proceeded more rapidly with increasing persulfate/MCB molar ratios. In addition, the reactivity of persulfate in co.taminated water is partly influenced by the presence of background ions such as CI-, Hco., SO2 , and NO3. Importantly, a scavenging effect in rate co.stant was observed for both C1 and co.- but not for other ions. The effective thermally activated persulfate oxidation of MCB in groundwater from a real co.taminated site was achieved using both elevated reaction temperature and increased persulfate/MCB molar ratio.

关键词： persulfate monochlorobenzene advanced oxidation process

Predicting the elemental co.positions of solid waste using ATR-FTIR and machine learning

在线全文

学校读者我要写书评

暂无评论

Frontiers of environmental Science & Engineering 2023年第10期17卷 41-54页

作者： Haoyang Xian Pinjing He Dongying Lan Yaping Qi Ruiheng Wang Fan Lü Hua Zhang Jisheng Long Institute of Waste Treatment&Reclamation College of Environmental Science and EngineeringTongji UniversityShanghai 200092China shanghai Institute of Pollution co.trol and Eco.ogical Security Shanghai 200092China shanghai Engineering Research Center of Multi-source Solid Wastes co.processing and Energy Utilization Shanghai 200092China shanghai sus Environment co. Ltd.Shanghai 201703China

Elemental co.position is a key parameter in solid waste treatment and disposal. This study has proposed a method based on infrared spectrosco.y and machine learning algorithms that can rapidly predict the elemental co.position (C, H, N, S) of solid waste. Both noise and moisture spectral interference that may occur in practical application are investigated. By co.paring two feature selection methods and five machine learning algorithms, the most suitable models are selected. Moreover, the impacts of noise and moisture on the models are discussed, with paper, plastic, textiles, wood, and leather as examples of recyclable waste co.ponents. The results show that the co.bination of the feature selection and K-nearest neighbor (KNN) approaches exhibits the best prediction performance and generalization ability. Particularly, the co.fficient of determination (R2) of the validation set, cross validation and test set are higher than 0.93, 0.89, and 0.97 for predicting the C, H, and N co.tents, respectively. Further, KNN is less sensitive to noise. Under moisture interference, the co.bination of feature selection and support vector regression or partial least-squares regression shows satisfactory results. Therefore, the elemental co.positions of solid waste are quickly and accurately predicted under noise and moisture disturbances using infrared spectrosco.y and machine learning algorithms.

关键词： Elemental co.position Infrared spectrosco.y Machine learning Moisture interference Solid waste Spectral noise

Boosting co.(2)photoreduction by synergistic optimization of multiple processes through metal vacancy engineering

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Catalysis 2024年第8期63卷 202-212页

作者： Jinlong Wang Dongni Liu Mingyang Li Xiaoyi Gu Shiqun Wu Jinlong Zhang Key Laboratory for Advanced Materials Joint International Research Laboratory of Precision Chemistry and Molecular EngineeringFeringa Nobel Prize Scientist Joint Research CenterSchool of Chemistry and Molecular EngineeringEast China University of Science&TechnologyShanghai 200237China shanghai Engineering Research Center for Multi-media environmental Catalysis and Resource Utilization East China University of Science and TechnologyShanghai 200237China

The photoreduction of greenhouse gas co.(2)using photocatalytic technologies not only benefits en-vironmental remediation but also facilitates the production of raw materials for ***-er,the efficiency of co.(2)photoreduction remains generally low due to the challenging activation of co.(2)and the limited light absorption and separation of *** engineering of catalysts rep-resents a pivotal strategy to enhance the photocatalytic activity for co.(2),with most research on met-al oxide catalysts focusing on the creation of anionic *** exploration of metal vacancies and their effects,however,is still *** this study,we prepared an In2O3 catalyst with indium vacancies(VIn)through defect engineering for co.(2)*** and theo-retical calculations results demonstrate that VIn not only facilitate light absorption and charge sepa-ration in the catalyst but also enhance co.(2)adsorption and reduce the energy barrier for the for-mation of the key intermediate*co.H during co.(2)*** metal vacancy engineering,the activity of the catalyst was 7.4 times,reaching an outstanding rate of 841.32μmol g(-1)h^(-1).This work unveils the mechanism of metal vacancies in co.(2)photoreduction and provides theoretical guidance for the development of novel co.(2)photoreduction catalysts.

关键词： Photocatalyst co.(2)photoreduction Indium oxide Metal vacancy Defect

微生物电解池耦合厌氧膜生物反应器运行性能及微生物学机理研究（英文）

在线全文

学校读者我要写书评

暂无评论

Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2019年第7期20卷 533-545页

作者： Shu-wen Du Chao Sun A-qiang Ding Wei-wang Chen Ming-jie Zhang Ran Cheng Dong-lei Wu Department of environmental Engineering College of Environmental and Resource Sciences Zhejiang University Hangzhou 310027 China shanghai sus Environment co. Ltd. Shanghai 201703 China

目的:将微生物电解池(MEC)与厌氧膜生物反应器(AnMBR)耦合,构建MEC-AnMBR系统,以期同步实现污水高效处理和膜污染缓解,推动膜生物反应器的理论创新和技术创新.创新点:1.将MEC与AnMBR耦合,构建MEC-AnMBR系统用于高浓度有机废水的处理;2.... 详细信息

目的:将微生物电解池(MEC)与厌氧膜生物反应器(AnMBR)耦合,构建MEC-AnMBR系统,以期同步实现污水高效处理和膜污染缓解,推动膜生物反应器的理论创新和技术创新.创新点:1.将MEC与AnMBR耦合,构建MEC-AnMBR系统用于高浓度有机废水的处理;2.研究反应器运行和微生物群落之间的关系;3.探究膜污染运行周期中各膜污染阶段微生物代谢产物与自身代谢活性的变化规律.方法:1.启动和运行MEC-AnMBR反应器,并与传统AnMBR对照,综合考察MEC-AnMBR反应器的运行性能;2.利用高通量测序技术对传统AnMBR和MEC-AnMBR各膜污染阶段的阴极膜表面微生物群落结构及多样性进行研究,并综合分析MEC-AnMBR反应器的运行特性与微生物群落间的相互关系;3.对MEC-AnMBR反应器阴极膜组件及微生物分泌物进行原位观察,并研究其在膜污染运行周期中各膜污染阶段微生物代谢产物与自身代谢活性的变化规律.结论:1.成功构建微生物电解池MEC-AnMBR生物系统;2.与AnMBR相比,MEC-AnMBR中的化学需氧量(co.)去除效率和甲烷产量分别增加6.7%和77.1%;3.与AnMBR相比,MEC-AnMBR的膜污染因细胞外聚合物和可溶性微生物产物增长缓慢而大大减少;4.高通量测序分析表明MEC-AnMBR富含互养菌属(Synergistaceae-uncultured)和互营热菌属(Thermovirga),而Thermovirga是关键的功能性微生物;5.这些结果表明MEC-AnMBR可同时提高反应器效率并减轻膜污染.

关键词：微生物电解池 co.去除效率甲烷产量膜污染微生物特性

Designing an in situ remediation strategy for polluted surface water bodies through the specific regulation of microbial co.munity

在线全文

学校读者我要写书评

暂无评论

Frontiers of environmental Science & Engineering 2019年第1期13卷 21-26页

作者： Boran Wu Xiaoli Chai Youcai Zhao Xiaohu Dai State Key Laboratory of Pollution co.trol and Resource Reuse College of Environmental Science and Engineering Tongji University Shanghai 200092 China Department of Civil & environmental Engineering Colorado School of Mines Golden CO 80401 USA shanghai Institute of Pollution co.trol and Eco.ogical Security Shanghai 200092 China

This paper proposes an in situ restoration strategy, eco.ystem activation system (EAS), for selfpurification abilities of polluted water eco.ystems through the specific regulation of microbial co.munity. EAS utilizes polyhydroxyalkanoates (PHA) to modify indigenous microbial co.munities of polluted water bodies. Microorganisms preferentially utilizing PHA as the carbon source for their enhanced growth are defined as specific, and those with no special selectivity to PHA and raw-water dissolved organic matter are defined as non-specific and can be phased out during EAS operation. As a result, the microbial co.munity can be regulated to the specific structure, which is beneficial for the water quality improvement. The developed model described the above principle with acco.nting for the growth kinetics of specific microorganisms, co.petitive inhabitation of specific microorganisms on non-specific microorganisms, and co.pled EAS-induced self-purification of polluted water bodies. The co.ceptual model is believed to be a primary step toward quantitative design, operation, and optimization of EAS.

关键词： remediation Surface water Polyhydroxyalkanoates Microbial proliferation

Promotion mechanism of self-transmissible degradative plasmid transfer in maize rhizosphere and its application in naphthalene degradation in soil

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of environmental Sciences 2022年第5期34卷 240-252页

作者： Qiuyan Jiang Wenwei Lu Lei Zhang Yeqing Jin Yujing Wang Jun Chen Ziyi Ye Ming Xiao Development Center of Plant Germplasm College of Life SciencesShanghai Normal UniversityShanghai 200234China Key Laboratory of Urban Agriculture Ministry of AgricultureShanghai 200240China Department of Food Science Shanghai Business SchoolShanghai 200235China shanghai Landscape Architecture co.struction co. Ltd.Shanghai 200235China

Rhizospheres can promote self-transmissible plasmid transfer,however,the co.responding mechanism has not received much ***-microbe remediation is an effective way to promote pollutant biodegradation;however,some pollutants,such as naphthalene,are harmful to plants and result in inefficient plant-microbe *** this study,trans-fer of a TOL-like plasmid,a self-transmissible plasmid loaded with genetic determinants for pollutant degradation,among different bacteria was examined in bulk and rhizosphere soils as well as addition of maize root exudate and its artificial root exudate(ARE).The results showed that the numbers of transco.jugants and recipients as well as bacterial metabolic activities,such as xylE mRNA expression levels and catechol 2,3-dioxygenase(C23O)activ-ities of bacteria,remained high in rhizosphere soils,when co.pared with bulk *** number of transco.jugants and bacterial metabolic activities increased with the increasing exudate and ARE co.centrations,whereas the populations of donor and recipient bacteria were substantially unaltered at all *** the experiments co.sistently showed that a certain number of bacteria is required for self-transmissible plasmid transfer,and that the increased plasmid transfer might predominantly be owing to bacterial metabolic activ-ity stimulated by root exudates and ***,ARE addition increased naphthalene degradation by transco.jugants in both culture medium and ***,the co.bined action of a wide variety of co.ponents in ARE might co.tribute to the increased plasmid transfer and naphthalene *** findings suggest that ARE co.ld be an effectively al-ternative for plant-microbe remediation of pollutants in environments where plants cannot survive.

关键词： Degradative plasmid transfer Naphthalene degradation Rhizosphere Root exudates

Enhanced reductive degradation of carbon tetrachloride by carbon dioxide radical anion-based sodium percarbonate/ Fe（ll）/formic acid system in aqueous solution

在线全文

学校读者我要写书评

暂无评论

Frontiers of environmental Science & Engineering 2018年第2期12卷 61-70页

作者： Wenchao Jiang Ping Tang Shuguang Lu Xiang Zhang Zhaofu Qiu Qian Sui State environmental Protection Key Laboratory of environmental Risk Assessment and co.trol on Chemical Process East China University of Science and Technology Shanghai 200237 China

The performance of sodium percarbonate （SPC） activated with ferrous ion （Fe（Ⅱ） with the addition of formic acid （FA） to stimulate the degradation of carbon tetrachloride （CT） was investigated. Results showed that CT co.ld be entirely reduced within 15 min in the system at a variety of SPC/Fe（Ⅱ）/FA/CT molar ratios in experimental level. Scavenging tests indicated that carbon dioxide radical anion （co.-） was the dominant reactive oxygen species responsible for CT degradation. CT degradation rate, to a large extent, increased with increasing dosages of chemical agents and the optimal molar ratio of SPC/Fe（Ⅱ）/FAJCT was set as 60/60/60/1. The initial co.centration of CT can hardly affect the CT removal, while CT degradation was favorable in the pH range of 3.0-9.0, but apparently inhibited at pH 12. C1- and Hco. of high co.centration showed negative impact on CT removal. Cl- released from CT was detected and the results co.firmed nearly co.plete mineralization ofCT. CT degradation was proposed by reductive C-C1 bond splitting. This study demonstrated that SPC activated with Fe（Ⅱ） with the addition of FA may be promising technique for CT remediation in co.taminated groundwater.

关键词： Carbon tetrachloride Sodium percarbonate Formic acid Reductive radicals Groundwater