检索结果-内蒙古大学图书馆

Chinese Chemical Letters 2023年第4期34卷 396-401页

作者： Jingyang Luo Yuxiao Li Wenxuan Huang Feng Wang Shiyu Fang Xiaoshi Cheng Qian Feng Fang Fang Jiashun Cao Yang Wu Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes Ministry of EducationHohai UniversityNanjing 210098China College of Environment Hohai UniversityNanjing 210098China State Key Laboratory of Pollution Control and Resource Reuse School of Environmental Science and EngineeringTongji UniversityShanghai 200092China

The distinct influences of cephalosporins(CEPs, i.e., cefamandole nafate and cefpirome sulfate) affiliated to different generations on the volatile fatty acids(VFAs) production and antibiotic resistance genes(ARGs) fates during waste activated sludge(WAS) fermentation were unveiled. The presence of CEPs mainly exhibited negative effects on the total VFAs production(5%–15% reduction), especially the cefamandole nafate, which is quite different to previous understanding. Further investigation revealed that the CEPs contributed to the solubilization and hydrolysis but inhibited the acidification process by affecting the functional microbial populations(i.e., Tissierella) and general microbial metabolic activities(i.e., pyruvate metabolism and VFAs biosynthesis). In addition, CEPs(especially the cefpirome sulfate)caused the propagation of ARGs(i.e., bla TEM, tet X and mex F) during WAS fermentation. CEPs enhanced the cell membrane permeability to promote the antibiotics mechanism of efflux pump and the horizontal transfer of ARGs. Also, the CEPs altered the regulatory systems(i.e., two component system) and microbial populations associated with ARGs, resulting in the proliferation of specific ARGs. Overall, the dissimilarity of different CEPs impacts on the WAS fermentation for VFAs production and ARGs variations enlightened the diverse environmental behaviors of anthropogenic pollutants and evoked the caution of ecological risks.

关键词： Wasteactivated sludge(WAS) Cephalosporins(CEPs) Volatilefattyacids(VFAs) Antibiotic resistancegenes(ARGs) Geneticexpressions

来源：评论

学校读者我要写书评

暂无评论

Effects of straw returning on photochemical process and imidacloprid degradation in paddy water through a field experiment

引用

Carbon Research 2024年第1期3卷 1-12页

作者： Li, Mabo Zeng, Yu Fu, Qinglong Zhang, Mingyang Chen, Ning Wang, Yujun Zhou, Dongmei Fang, Guodong State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil Science Chinese Academy of Sciences Nanjing210008 China University of Chinese Academy of Sciences Beijing100049 China School of Environmental Studies China University of Geosciences Wuhan430074 China State Key Laboratory of Pollution Control and Resource Reuse School of the Environment Nanjing University Nanjing210023 China

Straw returning is an important strategy for effectively using straw resources to improve soil fertility and quality, but the effects of this process on reactive intermediates (RIs) formation in paddy water are not fully explored. In this study, we conducted a field experiment to explore the effects of straw returning on RIs formation including triplet chromophoric dissolved organic matter (3CDOM*), hydroxyl radicals (•OH), and singlet oxygen (1O2) in paddy water. It was found that straw returning considerably increased the steady-state concentration of RIs, and the application of rice straw with 25% and 75% organic replacement ratio increased RIs concentration by 2.52 and 2.25 times, respectively. The optical spectroscopy, Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR-MS) analysis and structural equation model showed that straw returning produces abundant humified and aromatic DOM containing fulvic acid, lignin and protein-like substances, which could induce more RIs under irradiation. In addition, straw returning significantly accelerated imidacloprid (IMD) degradation, yielding degradation products that were highly toxic to aquatic animals (i.e., fish and daphnia) but less toxic to aquatic plants (i.e., green algae). This study would offer an innovative viewpoint on the effects of straw returning on the photochemistry of paddy water and the naturally occurring abiotic degradation pathway of organic contaminants. © The Author(s) 2024.

关键词： Aquatic organisms

来源：评论

学校读者我要写书评

暂无评论

Developing zirconium xerogel coagulants for deep removal of phosphorous

Environmental Surfaces and Interfaces

引用

Environmental Surfaces and Interfaces 2024年第1期2卷 66-74页

作者： Haoming Zhang Yonghai Gan Wenchang Zhang Shuangshuang Wei Shujuan Zhang State Key Laboratory of Pollution Control and Resource Reuse School of Environment Nanjing University 210023 China

Deep removal of phosphorous (P) from water is a necessary measure to solve the eutrophication problem. Coagulation is both a basic treatment method for P removal and an important pretreatment process for membrane filtration. However, few coagulants can meet the both requirements. Based on the analysis on the hydrolysis behaviors of some earth-abundant metals and the solubility products of their phosphates, a series of zirconium xerogel coagulants (ZXC) was fabricated with a novel approach (the sol-gel method) and was evaluated for the removal of both organic and inorganic P in coagulation and coagulation-ultrafiltration. In terms of P removal and anti-fouling of membrane, the resultant ZXC outperformed polyzirconium chloride (PZC), polyaluminum chloride (PAC), polyferric sulfate (PFS), as well as titanium xerogel coagulant (TXC) in a wide range of pH and dose. The rapid hydrolysis of Zr 4+ and the formation of Zr 3 (PO 4 ) 4 with a rather low solubility product are attributable to the great performance of ZXC in coagulation. This study highlights the potential of ZXC as an effective solution for enhancing the treatment of water and wastewater, particularly in achieving deep P removal and improving membrane fouling resistance, thereby contributing to more sustainable and efficient strategies for addressing eutrophication and pollutant removal.

关键词： Coagulation Phosphate Membrane fouling Turbidity Zirconium Sol-gel

来源：评论

学校读者我要写书评

暂无评论

Tuning the primary selective nanochannels of MOF thin-film nanocomposite nanofiltration membranes for efficient removal of hydrophobic endocrine disrupting compounds

引用

Frontiers of Environmental Science & Engineering 2022年第4期16卷 1-13页

作者： Ruobin Dai Hongyi Han Yuting Zhu Xi Wang Zhiwei Wang State Key Laboratory of Pollution Control and Resource Reuse Shanghai Institute of Pollution Control and Ecological SecuritySchool of Environmental Science and EngineeringTongji UniversityShanghai 200092China Tongji Architectural Design(Group)Co. Ltd.Environmental Engineering BranchShanghai 200092China

Metal organic framework(MOF)incorporated thin-film nanocomposite(TFN)membranes have the potential to enhance the removal of endocrine disrupting compounds(EDCs).In MOF-TFN membranes,water transport nanochannels include(i)pores of polyamide layer,(ii)pores in MOFs and(iii)channels around MOFs(polyamide-MOF interface).However,information on how to tune the nanochannels to enhance EDCs rejection is scarce,impeding the refinement of TFN membranes toward efficient removal of *** this study,by changing the polyamide properties,the water transport nanochannels could be confined primarily in pores of MOFs when the polyamide layer became ***,the improved rejection of EDCs was dependent on the water transport channels of the TFN *** low monomer concentration(i.e.,loose polyamide structure),the hydrophilic nanochannels of MIL-101(Cr)in the polyamide layer could not dominate the membrane separation performance,and hence the extent of improvement in EDCs rejection was relatively *** contrast,at high monomer concentration(i.e.,dense polyamide structure),the hydrophilic nanochannels of MIL-101(Cr)were responsible for the selective removal of hydrophobic EDCs,demonstrating that the manipulation of water transport nanochannels in the TFN membrane could successfully overcome the permeability and EDCs rejection *** results highlight the potential of tuning primary selective nanochannels of MOF-TFN membranes for the efficient removal of EDCs.

关键词： Porous metal organic framework Thin-film nanocomposite membrane Primary selective nanochannels Nanofiltration Endocrine disrupting compounds

来源：评论

学校读者我要写书评

暂无评论

Solar evaporation for simultaneous oil-water separation and electricity generation with Janus wood-based absorbers

引用

Frontiers of Environmental Science & Engineering 2024年第2期18卷 13-23页

作者： Yue Yang Ze Fu Qi Zhang Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse School of Environmental and Biological EngineeringNanjing University of Science&TechnologyNanjing 210094China Key Laboratory of Industrial Ecology and Environmental Engineering(Ministry of Education) School of Environmental Science and TechnologyDalian University of TechnologyDalian 116024China National Laboratory of Solid State Microstructures Collaborative Innovation Center of Advanced MicrostructuresCollege of Engineering and Applied SciencesKey Laboratory of Intelligent Optical Sensing and Manipulation(Ministry of Education)Jiangsu Key Laboratory of Artificial Functional MaterialsNanjing UniversityNanjing 210093China

Oily wastewater from ocean oil spills endangers marine ecosystems and human health. Therefore, developing an effective and sustainable solution for separating oil-water mixtures is urgent. Interfacial solar photothermal evaporation is a promising approach for the complete separation of two-phase mixtures using only solar energy. Herein, we report a carbonized wood-based absorber with Janus structure of comprising a hydrophobic top-layer and an oleophobic bottom-layer for simultaneous solar-driven oil-water separation and electricity generation. Under sunlight irradiation, the rapid evaporation of seawater will induce a separation of oil-water mixtures, and cause a high salt concentration region underlying the interface, while the bottom “bulk water” maintains in a low salt concentration, thus forming a salinity gradient. Electricity can be generated by salinity gradient power. Therefore, oil-water separation efficiency of > 99% and derived extra electricity power of ~0.1 W/m2 is achieved under solar radiation, demonstrating the feasibility of oil-water separation and electricity production synchronously directly using solar energy. This work provides a green and cost-effective path for the separation of oil-water mixtures.

关键词： Oily wastewater Carbonized wood Salinity gradient Electricity generation Solar irradiation

来源：评论

学校读者我要写书评

暂无评论

Insights into multisource sludge distributed in the Yangtze River basin, China: Characteristics,correlation, treatment and disposal

引用

Journal of Environmental Sciences 2023年第4期126卷 321-332页

作者： Yiqun Guo Hui Gong Wenjing Shi Ning Fang Yaqin Tan Weiqi Zhou Jialiang Huang Lingling Dai Xiaohu Dai Yali Guo State Key Laboratory of Pollution Control and Resources Reuse College of Environmental Science and EngineeringTongji UniversityShanghai 200092China Shanghai Investigation Design&Research Institute Co.LtdShanghai 200050China YANGTZE Eco-Environment Engineering Research Center(Shanghai) China Three Gorges CorporationShanghai 200050China Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092China

Sludge is the by-product of wastewater treatment process. Multisource sludge can be defined as sludge from different sources. Based on the sludge properties of five typical cities in the Yangtze River basin, including Jiujiang, Wuhu, Lu’an, Zhenjiang and Wuhan, this study investigated and summarized the characteristic variations and distribution differences of multiple indicators and substances from municipal sludge, dredged sludge, and river and lake sediments. The results demonstrated pH of multisource sludge was relatively stable in the neutral range. Organic matter and water content among municipal sludge were high and varied considerably between different wastewater treatment plants. Dredged sludge had an obviously higher sand content and wider particle distribution, which could be considered for graded utilization depending on its size. The nutrients composition of river and lake sediments was usually stable and special, with lower nitrogen and phosphorus content but higher potassium levels. The sources of heavy metals and persistent organic pollutants in multisource sludge were correlated, generally much higher among municipal sludge than dredged sludge and river and lake sediments, which were the most important limitation for final land utilization. Despite various properties of multisource sludge, the final fate and destination have some overall similarities, which need to be supplemented and improved by standards and laws. The study provided a preliminary analysis of suitable technical routes for municipal sludge, dredged sludge, river and lake sediments based on their different characteristics respectively, which was of great significance for multisource sludge co-treatment and disposal in the future of China.

关键词： Multisource sludge Basic characteristics Potential correlation Treatment and disposal Heavy metals Persistent organic pollutants

来源：评论

学校读者我要写书评

暂无评论

New Insights into Microplastic Contamination in Different Types of Leachates: Abundances, Characteristics, and Potential sources

引用

Engineering 2024年第6期37卷 62-68页

作者： Lei Zhang Wentao Zhao Liang Zhang Zhenxiao Cai Ruiqi Yan Xia Yu Damià Barceló Qian Sui State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process School of Resources and Environmental EngineeringEast China University of Science and TechnologyShanghai 200237China State Key Laboratory of Pollution Control and Resource Reuse College of Environmental Science and EngineeringTongji UniversityShanghai 200092China Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092China PerkinElmer Inc.Shanghai 201203China Maihai Environmental Protection Technology Co. Ltd.SuzhouJiangsu 215000China Department of Environmental Chemistry Institute of Environmental Assessment and Water ResearchSpanish Council for Scientific Research(IDAEA-CSIC)Barcelona 08034Spain

Municipal solid waste(MSW)is an important destination for abandoned *** the waste disposal process,large plastic debris is broken down into microplastics(MPs)and released into the ***,current research only focuses on landfill leachates,and the occurrence of MPs in other leachates has not been ***,herein,the abundance and characteristics of MPs in three types of leachates,namely,landfill leachate,residual waste leachate,and household food waste leachate,were studied,all leachates were collected from the largest waste disposal center in *** results showed that the average MP abundances in the different types of leachates ranged from(129±54)to(1288±184)MP particles per liter(particlesL1)and the household food waste leachate exhibited the highest MP abundance(p<0.05).Polyethylene(PE)and fragments were the dominant polymer type and shape in MPs,*** characteristic polymer types of MPs in individual leachates were ***,the conditional fragmentation model indicated that the landfilling process considerably affected the size distribution of MPs in leachates,leading to a higher percentage(>80%)of small MPs(20–100 lm)in landfill leachates compared to other *** the best of our knowledge,this is the first study discussing the sources of MPs in different leachates,which is important for MP pollution control during MSW disposal.

关键词： Microplastics Landfill leachate Residual waste leachate Household food waste leachate source

来源：评论

学校读者我要写书评

暂无评论

Effects of sludge age on anaerobic acidification of waste activated sludge: Volatile fatty acids production and phosphorus release

引用

Journal of Environmental Sciences 2021年第7期33卷 11-21页

作者： Sisi Chen Xiaohu Dai Dianhai Yang Bin Dong State Key Laboratory of Pollution Control and Resource Reuse College of Environmental Science and EngineeringTongji UniversityShanghai 200092China

Effects of sludge age on volatile fatty acids (VFAs) production and Phosphorus (P) release during anaerobic acidification of waste activated sludge (WAS) were *** batch reactors (SBR) fed with simulating domestic sewage were applied to produce WAS of different sludge ages,and batch tests were used for anaerobic *** maximum dissolved total organic carbon,release of PO_(4)^(3+)-P,and accumulation of acetate (C2),propionate (C3),butyrate (C4),and valerate (C5) decreased by 56.2%,55.8%,52.6%,43.7%,82.4%and 84.8%,respectively,as the sludge age of WAS increased from 5 to 40 *** degradation of protein played a dominating role in decreasing DTOC and VFAs ***,the increase in molecular weight of organics and organic nitrogen content in the supernatant after acidification suggested that the refractory protein in WAS increased as sludge age *** the production of C2,C3,C4,and C5 from WAS decreased as the sludge age increased,the proportions of C2 and C3 in VFAs increased,which might be due to the declined production of C5 from protein and the faded genus *** sludge age of WAS at a relatively low level (<10 days) is more appropriate for anaerobic acidification of WAS as internal carbon sources and P resource.

关键词： Sludge age Waste activated sludge Acidification Volatile fatty acids Microbial community

来源：评论

学校读者我要写书评

暂无评论

Polyphosphate Accelerates Transformation of Nonstructural Carbohydrates to Improve Growth of ppk-Expressing Transgenic Rice in Phosphorus Deficiency Culture

引用

Rice science 2023年第3期30卷 235-246页

作者： ZHU Jinling WEI Ruping WANG Xin ZHENG Chaoqun WANG Mengmeng YANG Yicheng YANG Liuyan State Key Laboratory of Pollution Control and Resource Reuse School of the EnvironmentNanjing UniversityNanjing 210023China School of Science China Pharmaceutical UniversityNanjing 211198China Department of Agricultural and Biological Engineering University of FloridaGainesvilleFL 32611America

Crop yield and quality are often limited by the amount of phosphate fertilizer added to infertile soils,a key limiting factor for sustainable development in modern *** polyphosphate kinase(ppk)gene-expressing transgenic rice with a single-copy line(ETRS)is constructed to improve phosphate fertilizer utilization efficiency for phosphorus resource *** investigate the potential mechanisms of the increased biomass in ETRS in low phosphate culture,ETRS was cultivated in a low inorganic phosphate(Pi)culture medium(15μmol/L Pi,LP)and a normal Pi culture medium(300μmol/L Pi,CP),*** 89 d of cultivation in different concentrations of phosphate culture media,the total phosphorus,polyphosphate(polyP),biomass,photosynthetic rate,nonstructural carbohydrate(NSC)contents,related enzyme activities,and related gene expression levels were *** results showed that ETRS had a high polyP amount to promote the photosynthetic rate in LP,and its biomass was almost the same as the wild type(WT)in *** NSC content of ETRS in LP was higher than that of WT in LP,but slightly lower than that of WT in *** notably promoted the sucrose phosphate synthase activities of ETRS and significantly down-regulated the expression levels of sucrose transporter genes(OsSUT3 and OsSUT4),resulting in inhibiting the transport of sucrose from shoot to root in *** was concluded that polyP can stimulate the synthesis of NSCs in LP,which improved the growth of ETRS and triggered the biological activities of ETRS to save phosphate *** study provides a new way to improve the utilization rate of phosphate fertilizer in rice production.

关键词： polyphosphate phosphate fertilizer nonstructural carbohydrate sucrose transporter gene sucrose phosphate synthase

来源：评论

学校读者我要写书评

暂无评论

Getting insights into gas-phase sulfation effect on catalytic performance of praseodymium oxides in NH_(3)-SCR of NO

引用

Journal of Rare Earths 2023年第6期41卷 952-958,I0005页

作者： Yandi Cai Peng Yang Qinglong Liu Kaili Ma Wenxin Ma Wang Song Qiuhui Qian Fei Gao Wei Tan Lin Dong State Key Laboratory of Pollution Control and Resource Reuse School of EnvironmentJiangsu Key Laboratory of Vehicle Emissions ControlCenter of Modern AnalysisKey Laboratory of Mesoscopic Chemistry of MOESchool of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023China Analysis and Testing Center Southeast UniversityNanjing 211189China National and Local Joint Engineering Laboratory of Municipal Sewage Resource Utilization Technology School of Environmental Science and EngineeringSuzhou University of Science and TechnologySuzhou 215009China

Sulfation treatment has been widely used to promote the catalytic performance of ceria(CeO_(2))based catalysts for the selective catalytic reduction of NO by NH_(3)(NH_(3)-SCR of NO).Praseodymium oxide(PrO_(x)),another commonly used rare earth material with similar structural properties as CeO_(2),also shows satistactory redox properties due to the facile redox cycle of Pr^(3+)■Pr^(4+).In this work,gas phase sulfation treatment with varied duration was performed on PrO_(x) at 200℃,and the NH_(3)-SCR activity of sulfated PrO_(x) was *** on the results of systematic characterizations(e.g.,N_(2)-physisorption,NH_(3) oxidation,NO oxidation,in situ diffuse Fourier transform infrared spectroscopy),it is revealed that the catalytic performance of sulfated PrO_(x)is highly dependent on the sulfation time(or the amount of sulfate species deposited on PrO_(x)),which has a significant impact on the competitive reaction between NH_(3) oxidation and NH_(3)-SCR of NO,thus determining the NH_(3)-SCR activity of PrO_(x).This work provides new insight into tuning the interaction between PrO_(x) surface and reactants(NO,NH_(3))via sulfation treatment,which cam guide the design and application of PrO_(x)based catalysts for NH_(3)-SCR of NO in the future.

关键词： NH_(3)-SCR Praseodymium oxides Sulfation treatment Surface acidity NH_(3)oxidation Rare earths

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：