检索结果-内蒙古大学图书馆

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

Experimental and theoretical investigation on degradation of dimethyl trisulfide by ultraviolet/peroxymonosulfate: Reaction mechanism and influencing factors

引用

Journal of Environmental Sciences 2023年第5期127卷 824-832页

作者： Jianing Sun Xiaodong Xin Shaohua Sun Zhenqi Du Zhenxing Yao Mingquan Wang Ruibao Jia Shandong Province Water Supply and Drainage Monitoring Center Jinan 250101China School of Water Conservancy and Environment University of JinanJinan 250022China State Key Laboratory of Pollution Control and Resource Reuse College of Environmental Science and EngineeringTongji UniversityShanghai 200092China

With a large amount of domestic sewage and industrial wastewater discharged into the water bodies,sulfur-containing organicmatter inwastewater produced volatile organic sulfide,such as dimethyl trisulfide(DMTS)throughmicroorganisms,caused the potential danger of drinking water safety and human *** present,there is still a lack of technology on the removal of *** this study,the ultraviolet/peroxymonosulfate(UV/PMS)advanced oxidation processes was used to explore the degradation of *** than 90%of DMTS(30μg/L)was removed under the conditions of the concentration ratio of DMTS to PMS was 3:40,the temperature(T)was 25±2℃,and 10 min of irradiation by a 200 W mercury lamp(365 nm).The kinetics rate constant k of DMTS reacting with hydroxyl radical(HO·)was determined to be 0.2477 min^(−1).Mn^(2+),Cu^(2+)and NO_(3)^(-)promoted the degradation of DMTS,whereas humic acid and Cl-in high concentrations inhibited the degradation *** chromatography-mass spectrometry was used to analyze the degradation products and the degradation intermediates were dimethyl disulfide and *** functional theory was used to predict the possible degradation mechanism according to the frontier orbital theory and the bond breaking mechanism of organic *** results showed that the S–S,C–S and C–H bonds in DMTS molecular structure were prone to fracture in the presence of free radicals,resulting in the formation of alkyl radicals and sulfur-containing radicals,which randomly combined to generate a variety of degradation products.

关键词： Ultraviolet/peroxymonosulfate Dimethyl trisulfide Products Density functional theory Degradation mechanism

来源：评论

学校读者我要写书评

暂无评论

Mechanisms of allicin exposure for the sludge fermentation enhancement:Focusing on the fermentation processes and microbial metabolic traits

引用

Journal of Environmental Sciences 2022年第5期34卷 253-264页

作者： Feng Wang Jingyang Luo Shiyu Fang Wenxuan Huang Yunqi Zhang Le Zhang Xiaoshi Cheng Wei Du 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

As a frequently used product with antimicrobial activity,consumed allicin might be dis-charged and concentrated in waste-activated sludge(WAS).However,the influence of al-licin(as an exogenous pollutant)on WAS fermentation has not been clearly *** study aimed to disclose the impacts of allicin on volatile fatty acid(VFA)generation dur-ing WAS *** results showed that the appropriate presence of allicin(10 mg/g TSS)significantly enhanced the VFA yield(1894 versus 575 mg COD/L in the control)with increased acetate proportion(24.3%).Further exploration found that allicin promoted WAS solubilization,hydrolysis and acidification *** analysis revealed that the key genes involved in extracellular hydrolysis metabolism(i.e.,CAZymes),mem-brane transport(i.e.,gtsA and ytfT),substrate metabolism(i.e.,yhdR and pfkC)and fatty acid synthesis(i.e.,accA and accD)were all highly *** also induced the bacteria to produce more signalling molecules and regulate cellular functions,thereby enhancing the microbial adaptive and regulatory capacity to the unfavourable ***,the variations in fermentative microbes and their contributions to the upregulation of func-tional genes(i.e.,ytfR,gltL,INV,iolD and pflD)for VFA generation were ***,the simultaneous stimulation of functional microbial abundances and metabolic activities contributed to VFA production in allicin-conditioned reactors.

关键词： Allicin Waste activated sludge(WAS) Anaerobic fermentation Metagenomic analysis Functional genes

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

Mechanistic investigation on Ag-Cu_(2)O in electrocatalytic CO_(2) to CH_(4) by in situ/operando spectroscopic and theoretical analysis

引用

Journal of Energy Chemistry 2024年第1期88卷 521-531,I0012页

作者： Min Sun Luxiao Zhang Fuli Tian Jiaxin Li Yanqiu Lei Heng Zhang Lifeng Han Zhihua Guo Yonghui Gao Fenrong Liu Yan Wang Luhui Wang Shanghong Zeng School of Chemistry and Chemical Engineering Inner Mongolia UniversityHohhot 010021Inner MongoliaChina Key Laboratory of Medicinal and Edible Plants Resources of Hainan Province Hainan Vocational University of Science and TechnologyHaikou 571126HainanChina State Key Laboratory of Baiyunobo Rare Earth Resource Research and Comprehensive Utilization Baotou Research Institute of Rare EarthsBaotou 014030Inner MongoliaChina Zhejiang Key Laboratory of Petrochemical Environmental Pollution Control Zhejiang Ocean UniversityZhoushan 316022ZhejiangChina

Silver-copper electrocatalysts have demonstrated effectively catalytic performance in electroreduction CO_(2) toward CH_(4),yet a revealing insight into the reaction pathway and mechanism has remained ***,we construct chemically bonded Ag-Cu_(2)O boundaries,in which the complete reduction of Cu_(2)O to Cu has been strongly impeded owing to the presence of surface Ag *** interfacial confinement effect helps to maintain Cu^(+)sites at the Ag-Cu_(2)O *** in situ/operando spectroscopy and theoretical simulations,it is revealed that CO_(2) is enriched at the Ag-Cu_(2)O boundaries due to the enhanced physisorption and chemisorption to CO_(2),activating CO_(2) to form the stable intermediate^(*)*** boundaries between Ag shell and the Cu_(2)O mediate local^(*)CO coverage and promote^(*)CHO intermediate formation,consequently facilitating CO_(2)-to-CH_(4) *** work not only reveals the structure-activity relationships but also offers insights into the reaction mechanism on Ag-Cu catalysts for efficient electrocatalytic CO_(2) reduction.

关键词： Ag shell Interfacial confinement effect Cu~+ Local*CO coverage CO_(2)reduction

来源：评论

学校读者我要写书评

暂无评论

Biosynthetic CdS-Thiobacillus thioparus hybrid for solar-driven carbon dioxide fixation

引用

Nano Research 2023年第4期16卷 4531-4538页

作者： Guangyu Liu Feng Gao Hongwei Zhang Lei Wang Chao Gao Yujie Xiong Hefei National Laboratory for Physical Sciences at the Microscale and School of Chemistry and Materials ScienceUniversity of Science and Technology of ChinaHefei 230026China Institute of Energy Hefei Comprehensive National Science Center350 Shushanhu Rd.Hefei 230031China 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

Synergistically combining biological whole-cell bacteria with man-made semiconductor materials innovates the way for sustainable solar-driven CO_(2)fixation,showing great promise to break through the bottleneck in traditional chemical photocatalyst ***,most of the biohybrids require uneconomical organic nutrients and anaerobic conditions for the successful cultivation of the bacteria to sustain the CO_(2)fixation,which severely limits their economic viability and applicability for practical ***,we present an inorganic-biological hybrid system composed of obligate autotrophic bacteria Thiobacillus thioparus(***)and CdS nanoparticles(NPs)biologically precipitated on the bacterial surface,which can achieve efficient CO_(2)fixation based entirely on cost-effective inorganic salts and without the restriction of anaerobic *** optimized interface between CdS NPs and *** formed by biological precipitation plays an essential role for *** efficiently receiving photogenerated electrons from CdS NPs and thus changing the autotrophic way from chemoautotroph to *** a result,the *** biohybrid realizes the solar-driven CO_(2)fixation to produce multi-carbon glutamate synthase and biomass under visible-light irradiation with CO_(2)as the only carbon *** work provides significant inspiration for the further exploration of the solar-driven self-replicating biocatalytic system to achieve CO_(2)fixation and conversion.

关键词： biohybrids solar-driven CO_(2)fixation carbon cycle autotrophic bacteria Thiobacillus thioparus cadmium sulfide

来源：评论

学校读者我要写书评

暂无评论

Real-world emission characteristics of carbonyl compounds from agricultural machines based on a portable emission measurement system

引用

Journal of Environmental Sciences 2023年第2期124卷 846-859页

作者： Wenhan Yu Xianbao Shen BoboWu Lei Kong Kaijie Xuan Cheng Zhao Xinyue Cao Xuewei Hao Xin Li Hanyu Zhang Zhiliang Yao School of Ecology and Environment Beijing Technology and Business UniversityBeijing 100048China State Environmental Protection Key Laboratory of Food Chain Pollution Control Beijing Technology and Business UniversityBeijing 100048China Key Laboratory of Cleaner Production and Integrated Resource Utilization of China National Light Industry Beijing Technology and Business UniversityBeijing 100048China

Emissions of carbonyl compounds from agricultural machines cannot be *** compounds can cause the formation of ozone(O3)and secondary organic aerosols,which can cause photochemical smog to *** this study,20 agricultural machines were tested using portable emission measurement system(PEMS)under real-world tillage *** exhaust gases were sampled using 2,4-dinitrophenylhydrazine cartridges,and 15 carbonyl compounds were analyzed by high-performance liquid *** compound emission factors for agricultural machines were 51.14–3315.62 mg/(kg-fuel),and were 2.58±2.05,0.86±1.07 and 0.29±0.20 g/(kg-fuel)for China 0,China II and China III emission standards,*** compound emission factor for sowing seeds of China 0 agricultural machines was 3.32±1.73 g/(kg-fuel).Formaldehyde,acetaldehyde and acrolein were the dominant carbonyl compounds *** in emission standards and tillage processes impact ozone formation potential(OFP).The mean OFP was 20.15±16.15 g O3/(kg-fuel)for the China 0 emission *** OFP values decreased by 66.9% from China 0 to China II,and 67.4%from China II to China *** mean OFP for sowing seeds of China 0 agricultural machines was 25.92±13.84 g O3/(kg-fuel).Between 1.75 and 24.22 times more ozone was found to be formed during sowing seeds than during other processes for China 0 and China II agricultural *** carbonyl compound emissions from agricultural machines in China was 19.23 Gg in *** results improve our understanding of carbonyl compound emissions from agricultural machines in China.

关键词： Agricultural machines Carbonyl compounds Emission characteristics Tillage process PEMS

来源：评论

学校读者我要写书评

暂无评论

Degradation of odorous 2,4,6-trichloroanisole in chlorinated water by UV-LED/chlorination: kinetics and influence factors

引用

Environmental Science and pollution Research 2023年第15期30卷 44325-44336页

作者： Zhang, Yun-Lu Lin, Yi-Li Zhang, Tian-Yang Lu, Yong-Shan Zhou, Xiao-Yang Liu, Zhi Zheng, Zheng-Xiong Xu, Meng-Yuan Xu, Bin State Key Laboratory of Pollution Control and Resource Reuse Key Laboratory of Yangtze Water Environment Ministry of Education College of Environmental Science and Engineering Tongji University Shanghai200092 China Shanghai Institute of Pollution Control and Ecological Security Shanghai200092 China Department of Safety Health and Environmental Engineering National Kaohsiung University of Science and Technology Kaohsiung824 Taiwan

2,4,6-Trichloroanisole (2,4,6-TCA) has aroused a special concern for their odor problem and potential threats. In this study, the degradation of 2,4,6-TCA by UV/chlorination with different UV sources was compared, including low-pressure mercury lamp (LPUV, 254 nm) and ultraviolet light-emitting diode (UV-LED, 275 and 285 nm). The maximum removal of 2,4,6-TCA can be achieved by 275-nm UV-LED/chlorination in neutral and alkaline conditions which was 80.0%. The reaction, kinetics, and water matrix parameters on 2,4,6-TCA degradation were also evaluated. During UV-LED (275 nm)/chlorination, 2,4,6-TCA degradation was mainly caused by direct UV photolysis and indirect hydroxyl radical (HO·) oxidation, while reactive chlorine radicals (RCSs) had a negligible contribution. The second-order rate constant between HO· and 2,4,6-TCA was determined as 3.1 × 109 M−1 s−1. Increasing initial chlorine dosage and decreasing 2,4,6-TCA concentration or pH value significantly promoted 2,4,6-TCA degradation during UV/chlorination process. The presence of natural organic matter (NOM) and bicarbonate (HCO3−) can inhibit 2,4,6-TCA degradation, while chloride ion (Cl−) had a negligible effect. The kinetic model for 2,4,6-TCA degradation was established and validated, and the degradation pathways were proposed based on the identified intermediates. Furthermore, UV-LED (275 nm)/chlorination also exhibited a promising effect on 2,4,6-TCA removal in real water, which can be used to control 2,4,6-TCA pollution and odor problems. © 2023, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.

关键词： Alkalinity

来源：评论

学校读者我要写书评

暂无评论

New insights into the evaluation of anaerobic properties of sludge:Biodegradability and stabilization

引用

Journal of Environmental Sciences 2021年第2期33卷 158-166页

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

Evaluating anaerobic biodegradability of sludge and then identifying the stabilization of digestate is necessary in sludge treatment and disposal.48 sludge samples from 24 typical waste water treatment plants(WWTPs)in 11 provinces in China were selected to investigate the relationship between Biochemical Acidogenic Potential(BAP)test and Biochemical Methane Potential(BMP)*** volatile fatty acid(VFA)production obtained from BAP tests was found linearly related to the ultimate methane production from corresponding BMP *** results were obtained with Pearson correlation coefficient as 0.929 and R^2 value as ***,the physio-chemical characteristics(FCI,SUVA254,E 4/E 6)of supernatant,which were associated with humic-like substances(HS),were investigated before and after BMP *** which a new criterion(FCI>1.50,SUVA 254>1.10,E 4/E 6<4.0)was proposed to evaluate the stabilization level of anaerobic digested sludge.

关键词： Sludge Anaerobic digestion Biodegradability Stabilization Biochemical acidogenic potential Physio-chemical characteristics

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

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：