检索结果-内蒙古大学图书馆

Highly efficient capture of cadmium ions by dual-layer calcium sulfide–calcium carbonate–loaded kelp biochar: Synthesis, adsorption and mechanism

引用

Journal of Hazardous Materials 2025年 495卷 138842页

作者： Linzhe Yan Yingying Guo Bo Li Zhenluan Xue Zhiwei Jin Yu Zhong Lixia Yang Chunhui Zhao Kai Yin Jabrane JOUHA Penghui Shao Shenglian Luo School of Materials Science and Engineering Nanchang Hangkong University Nanchang 330063 PR China State Key Laboratory of Chemo/Biosensing and Chemometrics College of Environmental Science and Engineering Hunan University Changsha 410082 PR China Key Laboratory of Jiangxi Province for Persistent Pollutants Prevention Control and Resource Reuse Nanchang Hangkong University Nanchang 330063 PR China School of Public Health Nantong University Nantong 226019 PR China

Metal nanoparticle-loaded biochars have emerged as promising adsorbents for heavy metal elimination. However, the current preparation approaches predominantly depend on soluble modifying agents, mainly due to the challenge of large metal particles aggregation caused by insoluble modifying agents, resulting in a poor adsorption capacity. It is urgent to overcome the application bottleneck of insoluble modifying agents and prepare high-performance metal-supported adsorbents. Here, we cleverly combined kelp, abundant in sodium alginate with a stable effect, with insoluble calcium sulfite, successfully preparing nano-calcium oxide and calcium sulfide uniformly loaded on biochar surface. By natural aging and artificial aging, calcium carbonate protective layer was constructed on the surface of adsorbent to protect the stability of calcium sulfide. The maximum adsorption capacity of the prepared adsorbent for cadmium ions was up to 386.4 mg/g, which was 23 times higher than that of the raw biochar. The adsorption behavior was consistent with Elovich model (R 2 = 0.983) and Langmuir model (R 2 = 0.974). The mechanisms primarily involved ion exchange, chemisorption and cation-π coordination. This work may provide theoretical guidance for the application of insoluble modifying agents in materials preparation and open up a new method for preparing high-performance metal-supported adsorbents, and have potential application in the treatment of cadmium ions-containing wastewater.

关键词： Cadmium ion adsorption Metal nanoparticle-loaded biochar Natural and artificial aging Sodium alginate-rich kelp

来源：评论

学校读者我要写书评

暂无评论

Dose-dependent effects of MIL-88A(Fe) and MIL-101(Fe) on arsenic immobilization and phytoremediation using ramie ( Boehmeria nivea L.)

引用

Chemical Engineering Journal 2025年 517卷

作者： Jian Ye Xingyan Yin Chunping Yang Xiaofei Tan Chuang Li Gaobin Chen Ping Chen Qiang Chen Mingyang Dai College of Environmental Science and Engineering Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University) Ministry of Education Changsha 410082 PR China Shenzhen Research Institute of Hunan University Shenzhen 518055 PR China Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province School of Environmental Science and Engineering Hainan University Haikou Hainan 570228 PR China Academy of Environmental and Resource Sciences School of Environmental Science and Engineering Guangdong University of Petrochemical Technology Maoming Guangdong 525000 PR China Institute of Bast Fiber Crops Chinese Academy of Agricultural Sciences Changsha 410205 Hunan Province PR China

The efficacy and environmental effects of using metal–organic frameworks (MOFs) for the remediation of arsenic (As)-contaminated soil, a significant global problem, remain unclear. This study evaluated MIL-88A(Fe) and MIL-101(Fe) coupled with ramie ( Boehmeria nivea L.) for As-contaminated soil remediation. A soil incubation experiment revealed that 10,000 mg kg −1 MIL-88A(Fe) and MIL-101(Fe) reduced As bioavailability by 77.1 % and 65.0 %, respectively, and increased residual As fractions by 8 % and 7 % through Fe-As co-precipitation and adsorption. Divergent environmental effects emerged, which were probably due to differences in the framework structures and organic ligands: MIL-88A(Fe) improved soil urease activity and bacterial diversity, whereas MIL-101(Fe) induced acidification (decreasing soil pH by 25 %) and salinity stress (elevating soil electrical conductivity (EC) by 946 %). A pot experiment showed that 1000 mg kg −1 MOFs enhanced ramie biomass via As immobilization, whereas 5000 mg kg −1 MIL-101(Fe) suppressed growth because exposure to the MOF caused root damage. The MOFs enriched Pseudomonas (As-oxidizing) and suppressed Dokdonella (pathogenic), enhancing plant resilience. Notably, 100 mg kg −1 MIL-101(Fe) increased As translocation to stems (14.8 %) and leaves (27.6 %). Hydroponic analyses showed that 50–200 mg L -1 MIL-101(Fe) mitigated As-induced chlorophyll degradation (elevating Soil and plant analyzer development (SPAD) by 12.8 %–28.3 %), whereas 500 and 1000 mg L -1 induced oxidative stress (reducing SPAD by 4.2 %–10.7 %). This study provides valuable insights into using Fe-based MOFs in soil remediation and highlights their beneficial and harmful effects.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Removal mechanisms of β-blockers by anaerobic digestion in a UASB reactor with carbon feeding

引用

Bioresource Technology Reports 2020年 11卷

作者： Tang, Yixin Zhao, Bo Liu, Chunguang School of Environmental Science and Engineering Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse China−America CRC for Environment & Health of Shandong Province Shandong University 72# Jimo Binhai Road QingdaoShandong266237 China Guangzhou Key Laboratory of Environmental Exposure and Health School of Environment Jinan University China

Efficient removal of medical wastewater and pharmaceutical production wastewater containing Beta-blockers is currently the focus and difficulty of research. In this study, the UASB reactor was used to achieve efficient removal of Beta-blockers. The removal rate of atenolol, metoprolol and propranolol is about 80%, 60% and 60%, respectively. The relevant functional microorganisms were Thermotogae, Anaerolineae and Bacteroidetes. Beta-blockers interfered with the metabolism of bacteria and methanogens, resulting in reduction of methane production and accumulation of acetic acid, which in turn affected the performance of UASB reactor. Metoprolol, atenolol and propranolol are mainly removed by anaerobic co-metabolism with starch, of which oxidative degradation is the main route. This study provides a new idea for the complete and efficient biodegradation of Beta-blockers wastewater. © 2020 Elsevier Ltd

关键词： Anaerobic digestion

来源：评论

学校读者我要写书评

暂无评论

Nickel-doped ZIF-L as a high-performance catalyst for peroxymonosulfate activation and singlet oxygen-mediated As(III) removal

引用

Journal of Environmental Chemical Engineering 2025年第4期13卷

作者： Jian Ye Chuang Li Zhiming Yang Xuan Hu Qiang Chen Ang Sun Mingyang Dai Shaobo Liu Chunping Yang College of Environmental Science and Engineering Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University) Ministry of Education Changsha 410082 PR China School of Architecture and Art Central South University Changsha 410083 PR China Academy of Environmental and Resource Sciences School of Environmental Science and Engineering Guangdong University of Petrochemical Technology Maoming Guangdong 525000 PR China Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province School of Environmental Science and Engineering Hainan University Haikou Hainan 570228 PR China

The presence of trivalent arsenic (As(III)) in aquatic environments constitutes a persistent and substantial threat to the safety and quality of human drinking water resources. In response to this issue, we developed an innovative catalyst by synthesizing a nickel-doped zeolitic imidazolate framework (Ni-ZIF-L) through a multi-solvent approach at ambient temperature. Specifically designed to remove As(III) from aqueous environments, the Ni-ZIF-L catalyst, particularly the 5 % Ni-ZIF-L variant achieved through precise nickel-to-zinc ratio adjustment, demonstrated exceptional catalytic effects. Experimental findings revealed a significant enhancement in the catalytic performance of ZIF-activated peroxymonosulfate (PMS) via nickel doping. The 5 % Ni-ZIF-L catalyst demonstrated robust As(III) removal efficiency across diverse operational conditions, including varying catalyst and PMS dosages, initial As(III) concentrations, pH levels, and coexisting inorganic anions. Fourier-transform infrared spectroscopy (FTIR), Raman spectroscopy, and X-ray photoelectron spectroscopy (XPS) analyses demonstrated that As(III) was oxidized to As(V) and stabilized through As-O coordination. X-ray absorption near-edge structure (XANES) spectra explicitly confirmed the transition of adsorbed arsenic to a +5 oxidation state, consistent with As 2 O 5 , while extended X-ray absorption fine structure (EXAFS) fitting further revealed an As-O coordination shell with an atomic distance of 1.71 Å, corroborating the formation of stable As-O complexes. Radical quenching experiments identified singlet oxygen as the dominant reactive species driving arsenic oxidation. Overall, this research provides valuable insights for the development of novel ZIFs materials and the treatment of As pollution in wastewater.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Rational regulation of surface Fe(II) species on sewage sludge-derived biochar for sustainable and efficient peracetic acid (PAA) activation and water decontamination

引用

Separation and Purification Technology 2025年 375卷

作者： Shanshan Liu Zizhe Keng Danish Muhammad Yiqian Chen Sonwabo Sylvester Kakalatsa Yunhui Zhang Qiteng Zheng Fei Wang Yanqing Wu Lingling Guo Jian Xu Jianfeng Ye College of Environmental Science and Engineering Tongji University Shanghai 200092 China Chemical Engineering Department University of Engineering and Technology (UET) Lahore (Faisalabad Campus) G.T. Road Lahore Pakistan Key Laboratory of Urban Water Supply Water Saving and Water Environment Governance in the Yangtze River Delta of Ministry of Water Resources Shanghai 200092 China State Key Laboratory of Pollution Control and Resource Reuse Shanghai 200092 China Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092 China College of Civil Engineering Tongji University Shanghai 200092 China Institute of Geotechnical Engineering School of Transportation Southeast University Nanjing 210096 China Shanghai Synchrotron Radiation Facility Shanghai Advanced Research Institute Chinese Academy of Sciences Shanghai 201204 China State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control Nanjing Institute of Environmental Sciences Ministry of Ecology and Environment of China Nanjing 210042 Jiangsu Province China

The treatment of sewage sludge is an increasing environmental and social concern due to its daily generation in large quantities. In this study, sewage sludge was pyrolyzed at adjusted temperatures to produce biochar (SBC300, SBC500, SBC700 and SBC900) for the rational regulation of surface Fe species as a catalyst for peracetic acid (PAA)-based water decontamination. The highest bisphenol A removal (99.9 % in 10 min, k obs = 0.602 min −1 ) was achieved by SBC900, and both adsorption and degradation were enhanced due to increased surface area and electron-rich functional groups (especially C O), and the Fe(III) to Fe(II) transformation and defects (I D /I G = 0.96), respectively. The Fe(II)/ Fe(III) redox dominated PAA activation, and lattice oxygen and PAA induced inherent/generated Fe(III) to Fe(II). Alkoxy radicals (R-O , mainly CH 3 C(O)O and CH 3 C(O)OO ), OH and O 2 − were produced but only R-O and OH were reactive species, suggesting a complete radical pathway. This study offers an economic and handy scheme for the efficient reuse of waste-derived catalysts and provides atomic-level activation mechanisms.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Weak magnetic field stimulated nitrite oxidizing bacteria and destroyed the SNAD process

引用

Bioresource Technology Reports 2021年 13卷

作者： Dong, Ying Ge, Cheng-Hao Zhou, Qingxin Ni, Shou-Qing Zhu, Jiegao Lee, Taeho Ahmad, Shakeel Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse School of Environmental Science and Engineering Shandong University China Suzhou Research Institute Shandong University SuzhouJiangsu China Institute of Agro-Food Science and Technology Shandong Academy of Agricultural Sciences Key Laboratory of Agro-Products Processing Technology of Shandong Province Key Laboratory of Novel Food Resources Processing Ministry of Agriculture Jinan China Shandong Pacific Environmental Protection Co. Ltd. JinanShandong China Department of Civil and Environmental Engineering Pusan National University Pusan609-735 Korea Republic of Department of Soil and Environmental Sciences Muhammad Nawaz Shareef University of Agriculture Multan Pakistan

Simultaneous partial nitrification, anammox and denitrification (SNAD) process was successfully constructed in a fixed bed reactor. The ammonium and TN removal efficiencies exceeded 90% under the collaboration of ammonium oxidizing bacteria (AOB), anammox and denitrifying bacteria (DNB). However, the well cooperation was interrupted after introducing the weak MF of 3.5 mT, which was reflected directly by the increased nitrite oxidizing bacteria (NOB) activity and decreased AOB, anammox and DNB activities calculated via mass balance. Moreover, drastic microbial community structure changes induced by weak MF were observed. The dominant phylum changed from Proteobacteria (25.6%) to Deferribacteres (35.2%). The weak MF suppressed the growth of AOB (genus Nitrosomanas), anammox (genus Candidatus Brocadia and clone Anammox) and DNB (genus Denitratisoma) while promoted the enrichment of NOB (genus Nitrospira). Moreover, the weakened NH3-NH2OH, NO-N2O and N2O-N2 pathways might explain the deterioration of SNAD process caused by weak MF. © 2021 Elsevier Ltd

关键词： Nitrogen removal

来源：评论

学校读者我要写书评

暂无评论

Peri-urban ammonia emissions in Beijing-Tianjin-Hebei decrease with restructuring of China's livestock industry

引用

Agricultural Systems 2025年 228卷

作者： Fan, Xiangwen Wang, Haodan Winiwarter, Wilfried Zhao, Zhanqing Bai, Zhaohai Ma, Lin Key Laboratory of Agricultural Water Resources Hebei Key Laboratory of Soil Ecology Center for Agricultural Resources Research Institute of Genetic and Developmental Biology Chinese Academy of Sciences 286 Huaizhong Road Hebei Shijiazhuang 050021 China State Key Laboratory of Pollution Control and Resource Reuse School of the Environment Nanjing University Jiangsu Nanjing 210023 China Pollution Prevention Biotechnology Laboratory of Hebei Province School of Environmental Science and Engineering Hebei University of Science and Technology Shijiazhuang 050018 China International Institute for Applied Systems Analysis (IIASA) Schlossplatz 1 Laxenburg A-2444 Austria Institute of Environmental Engineering University of Zielona Góra Licealna 9 PL Zielona Góra 65-417 Poland School of Land Science and Space Planning Hebei GEO University 136 East Huai’ an Road Yuhua District Hebei Shijiazhuang 050031 China

CONTEXT: Ammonia (NH3) emissions from livestock production significantly contribute to formation of PM2.5, posing a major environmental concern. Over the past two decades, compared to other regions in China, Beijing, ... 详细信息

CONTEXT: Ammonia (NH₃) emissions from livestock production significantly contribute to formation of PM_2.5, posing a major environmental concern. Over the past two decades, compared to other regions in China, Beijing, Tianjin and Hebei (BTH) region, has been suffering from high NH₃ emissions due to increased urbanization and resulting intensified agricultural production. Uneven distribution of livestock leads to separation of crop and livestock, resulting in the waste of manure resources and environmental pollution. OBJECTIVE: This study systematically investigates the 2000–2019 temporal-spatial pattern of NH₃ emissions in the BTH region, with three focuses on: (1) analyzing the spatial distribution of livestock, the efficiency of livestock manure utilization, and the characteristics of NH₃ emissions;(2) elucidating impact of restructuring livestock industry on NH₃ emissions;(3) developing scenarios analysis to propose potential optimization pathways for reducing livestock NH₃ emissions. METHODS: We utilized the NUFER model to analyze livestock NH₃ emissions in the BTH region. The distribution of livestock was further elucidated through a panel analysis, which identified key factors shaping their spatial arrangement. Scenarios analysis (S1: coupling crop and livestock, S2: spatial planning) was applied to explore optimization pathways of reducing NH₃ emission. RESULTS AND CONCLUSIONS: The study reveals an initial increasing trend in livestock NH₃ emissions, peaking in 2015 at 511 kt NH₃, followed by a sharp decline to 401 kt NH₃ in 2019. Spatially, emission hotspots concentrated in the northeastern BTH region. Based on restructuring of China's livestock industry, the number of livestock started to decrease in areas designated as “urban sprawl” or for “ecological protection”, while the number of livestock in other land (land except those

关键词： Ammonia emission Livestock distribution Mitigation potential Sustainable agricultural system Temporal-spatial trends

来源：评论

学校读者我要写书评

暂无评论

Electrostatic Field in Contact-Electro-Catalysis Driven C−F Bond Cleavage of Perfluoroalkyl Substances

引用

Angewandte Chemie 2024年第19期136卷

作者： Dr. Yanfeng Wang Jing Zhang Wenkai Zhang Jiaming Yao Prof. Jinyong Liu Prof. Huan He Prof. Cheng Gu Prof. Guandao Gao Prof. Xin Jin State Key Laboratory of Pollution Control and Resource Reuse School of Environment Nanjing University Nanjing 210023 China School of Life and Environmental Sciences Shaoxing University Huancheng Road 508 Shaoxing 312000 China Suzhou High School Of Jiangsu Province Renmin Road 699 Suzhou 215007 China Department of Chemical & Environmental Engineering University of California Riverside California 92521 United States School of Environment Nanjing Normal University Nanjing 210023 China Chongqing Innovation Research Institute of Nanjing University Chongqing 401121 China

Perfluoroalkyl substances (PFASs) are persistent and toxic to human health. It is demanding for high-efficient and green technologies to remove PFASs from water. In this study, a novel PFAS treatment technology was developed, utilizing polytetrafluoroethylene (PTFE) particles (1–5 μm) as the catalyst and a low frequency ultrasound (US, 40 kHz, 0.3 W/cm 2 ) for activation. Remarkably, this system can induce near-complete defluorination for different structured PFASs. The underlying mechanism relies on contact electrification between PTFE and water, which induces cumulative electrons on PTFE surface, and creates a high surface voltage (tens of volts). Such high surface voltage can generate abundant reactive oxygen species (ROS, i.e., O 2 ⋅ − , HO⋅, etc.) and a strong interfacial electrostatic field (IEF of 10 9 ~10 10 V/m). Consequently, the strong IEF significantly activates PFAS molecules and reduces the energy barrier of O 2 ⋅ − nucleophilic reaction. Simultaneously, the co-existence of surface electrons (PTFE*( e − )) and HO⋅ enables synergetic reduction and oxidation of PFAS and its intermediates, leading to enhanced and thorough defluorination. The US/PTFE method shows compelling advantages of low energy consumption, zero chemical input, and few harmful intermediates. It offers a new and promising solution for effectively treating the PFAS-contaminated drinking water.

关键词： Electrostatic field Perfluoroalkyl substances Polytetrafluoroethylene Ultrasound Contact-electro-catalysis

来源：评论

学校读者我要写书评

暂无评论

Inside Cover: Mechanistic Understanding of Efficient Polyethylene Hydrocracking over Two-Dimensional Platinum-Anchored Tungsten Trioxide (Angew. Chem. Int. Ed. 40/2023)

引用

Angewandte Chemie International Edition 2023年第40期62卷

作者： Qimin Zhou Dr. Deliang Wang Prof. Dr. Qingyue Wang Dr. Kailin He Prof. Dr. Khak Ho Lim Prof. Dr. Xuan Yang Prof. Dr. Wen-Jun Wang Prof. Dr. Bo-Geng Li Prof. Dr. Pingwei Liu State Key Laboratory of Chemical Engineering College of Chemical and Biological Engineering Zhejiang University 866 Yuhangtang Rd Hangzhou 310027 Zhejiang P. R. China Institute of Zhejiang University-Quzhou 99 Zheda Rd Quzhou 324000 Zhejiang P. R. China Key Laboratory of Hunan Province for the Synergetic Control and Resource Reuse of the Multi-Pollutants of Flue Gas National Sintering and Pelletizing Equipment System Engineering Research Center Zhongye Changtian International Engineering Co. Ltd. Changsha 410205 Hunan P. R. China

来源：评论

学校读者我要写书评

暂无评论

Mechanistic Understanding of Efficient Polyethylene Hydrocracking over Two-Dimensional Platinum-Anchored Tungsten Trioxide

引用

Angewandte Chemie 2023年第40期135卷

Chemical upcycling of polyethylene (PE) can convert plastic waste into valuable resources. However, engineering a catalyst that allows PE decomposition at low temperatures with high activity remains a significant challenge. Herein, we anchored 0.2 wt.% platinum (Pt) on defective two-dimensional tungsten trioxide (2D WO 3 ) nanosheets and achieved hydrocracking of high-density polyethylene (HDPE) waste at 200–250 °C with a liquid fuel (C 5–18 ) formation rate up to 1456 g products ⋅ g metal species −1 ⋅ h −1 . The reaction pathway over the bifunctional 2D Pt/WO 3 is elucidated by quasi-operando transmission infrared spectroscopy, where (I) well-dispersed Pt immobilized on 2D WO 3 nanosheets trigger the dissociation of hydrogen; (II) adsorption of PE and activation of C−C cleavage on WO 3 are through the formation of C=O/C=C intermediates; (III) intermediates are converted to alkane products by the dissociated H. Our study directly illustrates the synergistic role of bifunctional Pt/WO 3 catalyst in the hydrocracking of HDPE, paving the way for the development of high-performance catalysts with optimized chemical and morphological properties.

关键词： 2D Pt/WO3 HDPE Activation Hydrogen Transfer PE Hydrocracking Quasi-Operando TIR Spectroscopy

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：