检索结果-内蒙古大学图书馆

Bioresource technology 2022年第PT A期344卷 126216页

作者： Guang Chen Wei Wu Jun Xu Zhiwei Wang State Key Laboratory of Pollution Control and Resource Reuse Shanghai Institute of Pollution Control and Ecological Security School and Environment of Science and Engineering Tongji University Shanghai 200092 China Shanghai Chengtou Wastewater Treatment Co. Ltd. Shanghai 201203 China. State Key Laboratory of Pollution Control and Resource Reuse Shanghai Institute of Pollution Control and Ecological Security School and Environment of Science and Engineering Tongji University Shanghai 200092 China. State Key Laboratory of Pollution Control and Resource Reuse Shanghai Institute of Pollution Control and Ecological Security School and Environment of Science and Engineering Tongji University Shanghai 200092 China. Electronic address: zwwang@***.

Assessing net primary productivity variation and potential future impacts based on machine learning and contribution analysis in the Yangtze River Delta, China

学校读者我要写书评

暂无评论

Science of The Total Environment 2025年 989卷 179886页

作者： Qing Wei Lianqing Xue Zichen Jia Yongqi Chen Peipei Chen State Key Laboratory of Pollution Control and Resource Reuse College of Environmental Science and Engineering Tongji University Shanghai 200092 China Ministry of Education Key Laboratory of Yangtze River Water Environment Tongji University Shanghai 200092 China College of Hydrology and Water Resources Hohai University Nanjing 210098 China

Net primary productivity (NPP) is a critical indicator of ecosystem carbon sequestration and vegetation growth, directly influencing global carbon cycles and climate change mitigation. However, understanding the spatiotemporal patterns of NPP in rapidly developing regions like the Yangtze River Delta (YRD) remains challenging due to complex interactions between climatic factors and human activities. This study addresses this gap by analyzing the spatiotemporal variations of NPP in the YRD from 2001 to 2020 using multi-source data and an advanced convolutional neural network (CNN) optimized by the dung beetle optimization (DBO) algorithm. The dynamic search strategy of the DBO algorithm enables it to to avoid local optima effectively and is particularly suitable for complex nonlinear problems such as NPP modelling. The proposed model demonstrated strong performance, with an R 2 of 0.914 and an RMSE of 21.1 gC/m 2 /yr, indicating reliable NPP estimation. The average NPP was 0.795 KgC/yr, with a significant annual increase of 3.72 gC/m 2 /yr. Spatially, NPP exhibited a northwest-to-southeast gradient, reflecting regional climate and land cover variations. Shapley additive explanations (SHAP) analysis highlighted sunshine hours, elevation, precipitation, and temperature as dominant factors influencing NPP. Partial correlation analysis further confirmed that elevation and precipitation were positively correlated with NPP, while sunshine hours and temperature showed negative correlations. Future predictions based on shared socioeconomic pathways (SSP) scenarios suggest a gradual decline in NPP from 2030 to 2050, with SSP245 maintaining higher NPP values than SSP585. The findings indicate that climate factors are the primary drivers of NPP increases, while human activities are primarily responsible for NPP declines. This study offers new insights into the complex dynamics of NPP in the YRD, providing a more accurate model for predicting future NPP trends and their implicat

关键词： Convolutional neural network Driving force Net primary productivity Spatiotemporal pattern Yangtze River Delta

Enhanced Ammonia Recovery from Strong Ammonia Wastewater Via a Transmembrane Electro-Chemisorption System with Authigenic Acid and Base

学校读者我要写书评

暂无评论

SSRN 2023年

作者： Zhang, Zhiqiang Deng, Ruifeng Zhang, Jiao She, Lu Wei, Guangfeng Jia, Renyong Xiang, Pengyu Xia, Siqing State Key Laboratory of Pollution Control and Resource Reuse Key Laboratory of Urban Water Supply Water Saving and Water Environment Governance in the Yangtze River Delta of Ministry of Water Resources College of Environmental Science and Engineering Tongji University Shanghai200092 China Key Laboratory of Yangtze River Water Environment Ministry of Education Tongji University Shanghai200092 China Shanghai Institute of Pollution Control and Ecological Security Shanghai200092 China Huadian Electric Power Research Institute Co. Ltd. Hangzhou310030 China School of Municipal and Ecological Engineering Shanghai Urban Construction Vocational College Shanghai200432 China Central-Southern Safety & Environment Technology Institute Co. Ltd. Wuhan430061 China Shanghai Key Laboratory of Chemical Assessment and Sustainability School of Chemical Science and Engineering Tongji University Shanghai200092 China Anhui Gaudi Technology Co. Ltd. Lu’an237000 China Zhejiang Weiming Environment Protection Co. Ltd. Wenzhou325000 China

A novel transmembrane electro-chemisorption system with authigenic acid and base was developed to investigate its performance of recovering ammonia from strong ammonia wastewater. The authigenic base from water electrolysis at the cathode could raise the wastewater pH, which converted ammonium into free ammonia. Simultaneously, the authigenic acid from water electrolysis at the anode could adsorb the free ammonia via transmembrane chemisorption. The recovered product was pure (NH4)2SO4, and two valued byproducts (pure H2 and pure O2) were obtained at the same time. Increasing applied voltage could promote the ammonia recovery. Keeping some headspace in the cathode chamber or circulating catholyte was beneficial to the ammonia recovery. Within the same run time, the higher the ammonia concentration in the influent was, the more amount of ammonia was recovered. Besides avoiding the addition of acid and base, the energy consumption of this system for ammonia recovery was low to 8.47 kWh/kg NH-N. Accordingly, the developed system showed good prospects in recovering ammonia from strong ammonia wastewater. © 2023, The Authors. All rights reserved.

关键词： Ammonia

Erratum to "Urban stormwater discharge contributes more micropollutants to surface water in humid regions of China: Comparison with treated wastewater" [Water Research 268 (2025) 122712]

学校读者我要写书评

暂无评论

Water research 2025年 277卷 123338页

作者： Wenyuan Yang Feifei Wang Qidong Que Chao Fang Feiyang Ao Zuxin Xu Wenhai Chu State Key Laboratory of Pollution Control and Resources Reuse College of Environmental Science and Engineering Tongji University Shanghai 200092 China Ministry of Education Key Laboratory of Yangtze River Water Environment Tongji University Shanghai 200092 China Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092 China. School of Environmental and Chemical Engineering Shanghai University Shanghai 200444 China. State Key Laboratory of Urban Water Resource and Environment Harbin Institute of Technology Harbin 150090 China. Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092 China. Electronic address: feedwater@***.

Influence of Dense "Water Network" on the Variation of Pm 2.5 Concentration in the Twain-Hu Basin: Numerical Simulation of A Heavy pollution Event

学校读者我要写书评

暂无评论

SSRN 2022年

作者： Zhu, Yan Bai, Yongqing Xiong, Jie Zhao, Tianliang Xu, Jiaping Zhou, Yue Hu, Weiyang Sun, Xiaoyun Hubei Meteorological Service Center Wuhan430205 China Hubei Key Laboratory for Heavy Rain Monitoring and Warning Research Institute of Heavy Rain China Meteorological Administration Wuhan430205 China Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters Nanjing University of Information Science and Technology Nanjing210044 China Jiangsu Climate Center Nanjing210044 China State Key Laboratory of Pollution Control and Resource Reuse School of the Environment Nanjing University Nanjing210023 China

The rivers and lakes in the middle reaches of the Yangtze River Basin (MRYRB) form a unique underlying surface of dense "water network". However, the influence of such underlying surface on the regional atmospheric environment in inland humid regions is not fully understood. In this study, the WRF Model with Chemistry were used to simulate a heavy pollution event under stable weather conditions in the MRYRB. On this basis, the regulating effects of different types of lake groups, such as centralized big lakes (CBLs) and discrete small lakes (DSLs) on the variation of regional PM2.5 concentration in the Twain-Hu Basin (THB) were clarified. The results show that the underlying surface of dense "water network" in the THB generally decreases the regional PM2.5 concentration, but the influences of different lake-group types are not uniform in the spatial distribution. The CBLs can reduce the PM2.5 concentration over the lake and its surroundings by 6.24%–9.60%. The vertical impacts on PM2.5 are concentrated within 1.5 km, and the PM2.5 concentration can be reduced by 9%–14% under the height of 500 m. The ability of DSLs in reducing PM2.5 pollution is relatively weak, and the influences are between −1.75% and 1.17%. Thermal factor and water vapor related factors are the key meteorological factors affecting the variation of regional PM2.5 concentration over the underlying "water network" surface. The warming (humidification) effects of such underlying surface contribute positively (negatively) to the "purification" of air pollution, where the contribution of thermal factor is stronger. The relative contributions of thermal factors (water vapor related factors) are 52.48% (43.91%) for CBLs, and 65.96% (27.31%) for DSLs, respectively. The "purification" effect of the underlying surface with dense "water network" in the THB on regional air pollution highlights the importance of environmental protection of inland rivers and lakes in regional environmental governance. © 2022, T

关键词： Lakes

Hydrophobic sponge with superhydrophilic sites for the controlled capture of surfactant-stabilized emulsified oil droplets

学校读者我要写书评

暂无评论

Journal of Environmental Chemical Engineering 2025年第3期13卷

作者： Liya Wang Kaiming Peng Di Zhao Xinyuan Peng Xiangfeng Huang Jia Liu Chen Cai Jing Kang Shiyang Li State Key Laboratory of Pollution Control and Resource Reuse Ministry of Education Key Laboratory of Yangtze River Water Environment Shanghai Institute of Pollution Control and Ecological Security College of Environmental Science and Engineering Tongji University No.1239 Siping Road Shanghai 200092 PR China Institute of Carbon Neutrality Tongji University No.1239 Siping Road Shanghai 200092 PR China School of Civil Engineering Kashi University Kashi 844000 PR China Key Laboratory of Organic Compound Pollution Control Engineering (MOE) School of Environmental and Chemical Engineering Shanghai University Shanghai 200444 PR China

Hydrophobic sponges have been identified as a promising material for the recovery of floating or dispersed oil, but they still face challenges in recovering oil from surfactant-stabilized emulsions. In this study, the melamine sponge (MS) was modified with Fe 3 O 4 magnetic particles (MPs), forming a hydrophobic sponge skeleton interspersed with superhydrophilic particles, denoted as MP@MS. The hydrophilic sites of the sponge can attract and capture the emulsified oil droplets with the hydrophilic ends of the surfactants stretching into the aqueous phase; then oil droplets spread along the hydrophobic skeleton; thereby recovering surfactant-stabilized emulsified oil droplets. To prepare the dual-wettability sponge, dopamine/polyethyleneimine (DA/PEI) was used to achieve hydrophilic modification of MPs, hydrophobic modification of MS, and bond them together synchronously by a facile one-pot synthesis. Compared with traditional hydrophobic sponges, the separation efficiency for surfactant-stabilized emulsions treated by MP@MS can increase from 5 % to approximately 90 %. MP@MS can effectively capture both anionic and nonionic-stabilized emulsified oil droplets, among which, the controlled continuous capture can be realized for oil droplets stabilized by nonionic surfactant. Furthermore, nonionic surfactant-coated oil droplets were verified through molecular dynamics (MD) simulations that they were more likely to detach from hydrophilic sites, and in this process remove surfactant molecules. This was conducive to exposing the hydrophilic sites promptly and thus demulsifying continuously. The new design principles and processing strategies will support the development and application of materials with dual-wettability structures in many fields, such as oil recovery, smart separation, and liquid manipulation.

关键词：

Opportunities and challenges of shortcut nitrogen removal in membrane-aerated biofilm reactors (MABRs)

学校读者我要写书评

暂无评论

Energy & Environmental Sustainability

Energy & Environmental Sustainability 2025年第2期1卷

作者： Tao Liu Dongdong Xu Yan Lu Chenkai Niu Daying Chen Yanjun Shao Yimeng Li Yayi Wang Jianhua Guo Department of Civil and Environmental Engineering The Hong Kong Polytechnic University Hong Kong China Australian Centre for Water and Environmental Biotechnology (ACWEB Formerly AWMC) The University of Queensland St. Lucia Queensland 4072 Australia State Key Laboratory of Pollution Control and Resources Reuse Shanghai Institute of Pollution Control and Ecological Security Tongji University Shanghai 200092 China

The membrane-aerated biofilm reactor (MABR) has attracted increasing attention from both academia and water practitioners due to its potential to enhance aeration efficiency and intensify treatment capacity. However, emerging evidence highlights a critical challenge in achieving shortcut nitrogen removal within MABRs because nitrite-oxidizing bacteria (NOB)—key enemies of shortcut nitrogen removal—reside in the innermost biofilm layer and are consequently well-protected. In response, extensive efforts over the past two decades have focused on developing strategies for stable NOB suppression to facilitate shortcut nitrogen removal in MABRs. This work offers a comprehensive review of the advancements made in this field, providing an in-depth analysis of the kinetic mechanisms that underpin the NOB suppression in MABRs. We propose that the current NOB suppression strategies in MABRs could be categorized into three groups according to their different kinetic mechanisms, while most were tested in laboratory with synthetic or high-strength wastewater and under controlled conditions. We present various strategies for the start-up, long-term maintenance and performance recovery after deterioration for shortcut nitrogen removal in MABRs. We also highlight MABRs as a potential platform for enriching and applying new nitrogen-cycling microorganisms. Finally, future research directions are suggested in both fundamental and engineering aspects, including exploring microbial ecology in biofilms and demonstrating NOB suppression strategies in real-world conditions. These efforts could further advance the understanding and application of MABRs in nitrogen removal processes.

关键词： Membrane-aerated biofilm reactor (MABR) Anammox Partial nitritation and anammox (PN/A) Nitrite shunt Partial denitrification and anammox (PdNA)

A Quantitative Structure Activity Relationship (Qsar) Model for Predicting the Rate Constant of the Reaction between Vocs and No3 Radicals

学校读者我要写书评

暂无评论

SSRN 2022年

作者： Liu, Yawei Cheng, Zhiwen Liu, Shiqiang Ren, Yuanyang Yuan, Tao Zhang, Xuxiang Fan, Maohong Shen, Zhemin School of Environmental Science and Engineering Shanghai Jiao Tong University Shanghai200240 China State Key Laboratory of Pollution Control and Resource Reuse Environmental Health Research Center School of the Environment Nanjing University Nanjing210023 China Departments of Chemical and Petroleum Engineering University of Wyoming LaramieWY82071 United States Department of Developmental and Behavioral Pediatrics Shanghai Children's Medical Center Shanghai Jiao Tong University School of Medicine Shanghai200127 China Shanghai Institute of Pollution Control and Ecological Security Shanghai200092 China

NO3 radical is one of the important oxidants used for the chemical degradation of VOCs. Thus, the derivation of rate constant (k NO3) is critical to understand the removal kinetics of VOCs. In order to better estimate the k NO3 , a quantitative structure activity relationship (QSAR) model was established using the k NO3 of 189 VOCs and quantum chemical parameters. The optimal QSAR model can predict the k NO3 with its R 2 , q 2 , and Q ext 2 being 0.879, 0.872, and 0.861, respectively. The QSAR analysis results indicate that the energy of the highest occupied molecular orbital (E HOMO ) and the maximum value of electrophilic Fukui index (f (-) x) are two intrinsic factors determining the k NO3. But the E HOMO is the most important. Additionally, the analysis of the correlation between k NO3 values and quantum chemical parameters shows that the gap energy between LUMO and HOMO (E GAP ), the minimum value of free radical Fukui index ( f (0) n ), and the maximum value of bond order (BO x ) also significantly affect k NO3. The validations of the optimal QSAR model confirm the high realizability, stability and accuracy, and the wide applicability of the derived model for predicting k NO3. © 2022, The Authors. All rights reserved.

关键词： Molecular graphics

A Novel Bi2wo6/Dmpbp Composite for Cyclic Adsorption and Photocatalytic Degradation of Organic Micropollutant in Water

学校读者我要写书评

暂无评论

SSRN 2022年

作者： Jia, Xun Zhang, Yalan Xu, Guizhou Wang, Xueyao Wu, Daishe Li, Aimin Xie, Xianchuan State Key Laboratory of Pollution Control and Resource Reuse School of the Environment Nanjing University Jiangsu Nanjing210023 China Key Laboratory of Poyang Lake Environment and Resource Utilization Ministry of Education School of Resources Environmental & Chemical Engineering Nanchang University Jiangxi Nanchang330031 China Jiangsu Frontier Electric Technology Co. Ltd Nanjing211102 China Jiangxi Nanxin Environmental Protection Technology Co. LTD Jiangxi Jiujiang330300 China

Many semiconductor catalysts are employed in water treatment due to their ability to absorb sunlight to degrade recalcitrant organic matter without excessive chemical addition. The typical photocatalyst Bi 2 WO 6 (BWO)has low energy efficiency due to its low specific surface area (SSA) and high photogenerated electron/hole recombination rate. In this study, a three-dimensional spherical BWO/DMPBP[5] composite was synthesized by loading DMpillar[5]arene-based porous polymer (DMPBP[5]) on BWO through solvothermal method to correct these deficiencies. Compared with the original photocatalyst BWO whose SSA is 19 m 2 ·g −1 , the optimized composite BWO-7% (BWO loaded with 7% DMPBP[5]) exposes more SSA with a value of 134 m 2 ·g −1 , endowing it more adsorption and photocatalytic active sites. Results showed that photocatalytic reaction rate constants of BWO-7% increased by more than 10 times, compared with that of BWO. This significant improvement was due to the introduction of DMPBP[5], which could concentration organic pollutants, thus reduce the distance between contaminants and the active site. More importantly, the BWO/W 5 O 14 heterojunction was formed and the oxygen vacancy was introduced after the loading of DMPBP[5], which is more conducive to separate electron/hole pairs and improve visible light photocatalytic performance. In addition, the adaptability to inorganic salts, pH and recycling performance of BWO composites were excellent. Altogether, this study provides the possibility for the application of new adsorption-photodegradation materials in photocatalytic water treatment. © 2022, The Authors. All rights reserved.

关键词： Oxygen vacancies

Research and Mechanism of Two-step Preparation of Acetamide from Microalgae under Hydrothermal Conditions 5

学校读者我要写书评

暂无评论

Research and Mechanism of Two-step Preparation of Acetamide ...

2020 5th International Conference on Advances in Energy and Environment Research, ICAEER 2020

作者： Jiang, Jikang Ye, Haixia Zhou, Jingfei Wang, Chenlu Shen, Zheng Zhang, Yalei National Engineering Research Center of Protected Agriculture Tongji University Shanghai200092 China Shanghai Huajie Ecological Environment Engineering Co. Ltd. Shanghai201407 China State Key Laboratory of Pollution Control and Resource Reuse Tongji University Shanghai200092 China

A two-step synthesis of acetamide under hydrothermal condition from microalgae, is presented. results showed that the best yield of acetamide and selectivity of acetic acid were 9.5 % and 60.1 % at 320 a for 8 min with a NH3 supply of 30. Algae such as spirulina, cyanobacteria and autotrophic chlorella could also acquire acetamide, and lactic acid was found to be an important intermediate during the exploration of reaction pathways. These results demonstrated that it is possible to develop a process for conversion of microalgae biomass into acetamide. © The Authors, published by EDP Sciences, 2020.

关键词： Microalgae