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Characteristics and source tracing of pollution in soil and groundwater of a retired coking plant in Shanxi Province

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environmental pollution (Barking, Essex : 1987) 2025年 382卷 126647页

作者： Jiabin Wang Yayun Xiang Xiaodong Li Jialun Shen Zongquan Sun Zhaoyue Liu Lan Yang Huan Yang Hejing Wang Hong Chang Fujun Ma State Key Laboratory of Environmental Criteria and Risk Assessment State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution Chinese Research Academy of Environmental Sciences Beijing 100012 China Beijing Key Lab for Source Control Technology of Water Pollution College of Environmental Sciences & Engineering Beijing Forestry University Beijing 100083 China. State Key Laboratory of Environmental Criteria and Risk Assessment State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution Chinese Research Academy of Environmental Sciences Beijing 100012 China. Technical Centre for Soil Agriculture and Rural Ecology and Environment Ministry of Ecology and Environment Beijing 100012 China. Electronic address: wanghejing@***. State Key Laboratory of Environmental Criteria and Risk Assessment State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution Chinese Research Academy of Environmental Sciences Beijing 100012 China. Electronic address: mafj@***.

Coking plants represent a significant industrial pollution source, exerting profound impacts on soil and groundwater quality while posing substantial risks to ecosystems and human health. This study investigated the contamination characteristics and spatial distribution of pollutants in soil and groundwater at a decommissioned coking plant in Shanxi Province, China, providing science-based recommendations for remediation. key findings reveal severe soil contamination, with benzene, benzo(a)pyrene (BaP), and petroleum hydrocarbons (PHs) identified as the predominant pollutants. Spatially, the contamination exhibited a "patchy" pattern, primarily concentrated in the production, storage, and sewage treatment areas, due to production emissions, improper raw material storage, and wastewater leakage. Vertical profiling demonstrated pollutant accumulation primarily in surface and fill layers, with distinct migration depths observed: ammonia nitrogen (NH-N) > benzene > polycyclic aromatic hydrocarbons (PAHs) > PHs. Targeted and graded removal measures based on the depth of vertical transport of contaminants in the soil. The groundwater remediation strategy prioritizes controlling the migration and treatment of benzene, naphthalene (NAP), and NH-N contamination. This study enhances the understanding of contaminant distribution and transport mechanisms in soil and groundwater at coking sites and offers practical insights for developing remediation strategies applicable to similar sites.

关键词： Coking site Groundwater contamination Soil pollution Spatial distribution pattern Vertical transport

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Catalytic Ozonation of Hard Cod in Coking Wastewater with Fe2o3/Al2o3-Sic: From Catalyst Design to Full-Scale Application

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SSRN 2022年

作者： Shi, Wei Liu, Xiaojing Liu, Yulei Li, Dong Tong, Xili Ma, Jun Wang, Lu State Key Laboratory of Urban Water Resource and Environment School of Environment Harbin Institute of Technology Harbin150090 China China Everbright Water Limited. Guangdong Shenzhen518000 China Collaborative Innovation Center of Atmospheric Environment and Equipment Technology Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control School of Environmental Science and Engineering Nanjing University of Information Science & Technology Nanjing210044 China State Key Laboratory of Coal Conversion Analytical Instrumentation Center Institute of Coal Chemistry Chinese Academy of Science Taiyuan030001 China

Herein, a robust and easy-recovery catalyst, Fe 2 O 3 /Al 2 O 3 -SiC, was prepared for the catalytic ozonation of hardly biodegradable COD (hard COD) in bio-treated coking wastewater. Al 2 O 3 was loaded on NaOH etched SiC, and Fe(NO 3 ) 2 further reacted with the Al 2 O 3 -SiC to generate Fe 2 O 3 /Al 2 O 3 -SiC. Al/Fe-O-Si bond formed on SiC through the substitution of surficial Si-OH groups with Al 3+ /Fe 3+ . These Lewis acid sites improved the adsorption of ozone and facilitated the formation of •OH and other reactive species in the catalytic ozonation process. For coking wastewater treatment, the removal ratio of hard COD and the generation efficiency of hydroxyl radical (R ct ) in catalytic ozonation process was 71% and 253% higher than those in the ozonation group, respectively. Ozone utilization increased from 0.44 g COD removed/g O 3 in ozonation group to 1.42 g COD removed/g O 3 in the Fe 2 O 3 /Al 2 O 3 -SiC catalytic ozonation group. Besides the abatement of hard COD, over 78% of UV 254 , 87% of color, 99% of cyanide, and 55% of acute toxicity of coking wastewater was eliminated during Fe 2 O 3 /Al 2 O 3 -SiC catalytic ozonation, which meeting the discharge standard of coking wastewater in China. In a full-scale application, the use of Fe 2 O 3 /Al 2 O 3 -SiC for catalytic ozonation decreased the consumption of O 3 to 60 mg L -1 and decreased the operation cost by 50%. © 2022, The Authors. All rights reserved.

关键词： Ozonization

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The enhanced role of formic acid on sulfuric acid-ammonia-driven nucleation in forest regions and polluted city areas

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Journal of environmental Sciences 2025年

作者： Shasha Chen Rongrong Li Chengyan Zhang Shuqin Wei Rui Wang Biwu Chu Xiaomeng Zhang Hao Li Tianlei Zhang Institute of Theoretical and Computational Chemistry Shaanxi Key Laboratory of Catalysis School of Chemical and Environment Science Shaanxi University of Technology Hanzhong 723001 China State Key Joint Laboratory of Environment Simulation and Pollution Control Research Center for Eco-environmental Sciences Chinese Academy of Sciences Beijing 100085 China

Formic acid (FA) is particularly prominent for its ubiquity and structural simplicity among atmospheric organic acids, and exerts a significant influence on atmospheric acidity. However, the potential contribution of FA to the primary stage of new particle formation (NPF) remains unclear. Herein, molecular dynamics (MD), density functional theory (DFT) and the atmospheric cluster dynamics code (ACDC) model have been utilized to evaluate the mechanism of FA participation in atmospheric SA (sulfuric acid)-A (ammonia) clusters. The MD simulations qualitatively suggest that FA can aggregate with SA and A to form larger clusters, and the aggregation time of the largest clusters decreases as the temperature decreases. The DFT and ACDC findings indicate that the ternary SA-A-FA system is thermodynamically more stable at low temperatures (238.15 K). Simultaneously, in regions with low temperatures, high [FA] (10 11 molecules/cm 3 ), low [SA] (10 6 molecules/cm 3 ) and high [A] (10 11 molecules/cm 3 ), FA significantly enhances SA-A cluster formation rates. The low-temperature NPF mechanism implies that FA could facilitate the growth of pure SA-A clusters via a “catalytic” mechanism and play an integral role in the genesis of critical clusters as a “participant”. This dual role differs from the “catalytic” role exhibited by malonic and glycolic acids in our previous studies. This discovery could help identify the sources of unexplained NPFs in regions with high FA concentrations, such as densely forested areas with abundant vegetation, regions affected by biomass burning, or periods with elevated vehicle exhaust emissions and the release of volatile organic compounds like isoprene and terpenoids.

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"Twin Lotus Flower" Adsorbents Derived from Lafe Cyanometallate for High-Performance Phosphorus Removal

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SSRN 2022年

作者： Dong, Pingping Jing, Xiaoxu Li, Yungui Shen, Yi Li, Qingqing Fang, Qile Advanced Institute of Natural Sciences Beijing Normal University Zhuhai519087 China Sichuan Provincial Sci-Tech Cooperation Base of Low-cost Wastewater Treatment Technology Department of Environmental Engineering Southwest University of Science and Technology Mianyang621010 China State Key Laboratory of Water Environment Simulation School of Environment Beijing Normal University Beijing100875 China Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province College of Environment Zhejiang University of Technology Hangzhou310032 China

Phosphorus (P) discharge is well recognized as the chief culprit of eutrophication and algal blooms. It is of pressing need to remove excessive phosphorus to protect the important watershed. Lanthanum (La) based materials are one type of attention-grabbing adsorbent due to their superior affinity to phosphate. Here, a La-Fe cyanometallate (CM) framework with a novel "twin lotus flower" structure is synthesized and rich hierarchical pores were fabricated via pyrolysis. The resultant "twin lotus flower" oxide of LaFe CM-500 is demonstrated to be a high-performance adsorbent for phosphate removal with a saturated capacity as high as 45.03 mg P/g. It also possesses superior removal ability for the stubborn low concentration of P pollution. The abundant hierarchical pores (from macropore to micropore) render a rapid diffusion of phosphate on the LaFe CM-500. The La components on porous adsorbent are verified to be the key active sites that form stable LaPO 4 via a ligand exchange process. The effects of solution conditions (temperature, pH, co-existing ions, and humic acid) are also investigated, and a high selectivity for phosphate adsorption enables the as-prepared "twin lotus flower" adsorbent to be competitive in practical water body treatment. © 2022, The Authors. All rights reserved.

关键词： Eutrophication

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New Insights into the Catalytic Mechanism of Vocs Abatement Over Pt/Beta with Active Sites Regulated by the Acid-Base Properties of Zeolite

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SSRN 2022年

作者： Li, Daiqiang Wang, Lian Lu, Yuqin Deng, Hua Zhang, Zhilin Wang, Yingjie Ma, Ying Pan, Tingting Zhao, Qian Shan, Yulong Shi, Xiaoyan Ma, Jinzhu He, Hong State Key Joint Laboratory of Environment Simulation and Pollution Control Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing100085 China University of Chinese Academy of Sciences Beijing100049 China Center for Excellence in Regional Atmospheric Environment Institute of Urban Environment Chinese Academy of Sciences Xiamen361021 China Department of Chemical Engineering Hebei Petroleum University of Technology Chengde067000 China

Pt/Beta catalysts for toluene oxidation with different valence states, location, and dispersion of Pt were achieved through regulation of active sites using the acid-base properties of zeolites with different Si/Al ratios. It was revealed that Pt2+ ions were highly dispersed and anchored on ion-exchange sites (strong Brønsted acid sites) of Beta zeolites with low Si/Al ratio, resulting in isolated Pt2+(OH) formation, while Pt0 nanoparticles were the main active sites for Beta zeolites with high Si/Al ratio without H2 post-treatment. The Pt/Beta with high silica had better catalytic oxidation performance than that with low silica because Pt0 had stronger activation ability towards toluene and oxygen as well as more facile oxygen replenishment and benzene ring opening reaction than Pt2+(OH). It was noted that the key role of Pt2+(OH) led to enhanced oxidation of toluene driven by water vapor. Both high-silica and low-silica Pt/Beta catalysts exhibited excellent durability for 60 h operation. © 2022, The Authors. All rights reserved.

关键词： Zeolites

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3d-Printed Hydrocyclone Membrane Cell for Low-Fouling Filtration of Particle-Laden Source Waters: Transport Phenomena Analysis

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SSRN 2022年

作者： Zhang, Mengqi Yang, Meiyue Wang, Jingwei Huang, Haiou State Joint Key Laboratory of Environmental Simulation and Pollution Control School of Environment Beijing Normal University No. 19 Xinjiekouwai Street Beijing100875 China Department of Environmental Health and Engineering Bloomberg School of Public Health The John Hopkins University 615 North Wolfe Street MD21205 United States

Particle-laden source waters are ubiquitously present in the natural environment and engineered systems. The demand for facile and energy-efficient treatment of these waters is increasing due to global water shortage aggravated by climate change. Therefore, a hydrocyclone membrane filtration cell (HMFC) enabled by 3D-printing technology was developed in this study and examined for its capability and mechanisms for pretreatment- and backwash-free filtration of inorganic and organic particle suspensions. Computational fluid dynamics simulation results indicate that the particles in the HMFC are subject to a strong swirling and turbulent flow field with turbulent kinetic energy ranging from 0.02-2.42 m 2 /s 2 and shear strain from 10 4 -10 5 s -1 , 10 6 and 100 times higher than those obtained with conventional membrane filtration systems, respectively. This unique flow condition leads to centrifugal/centripetal, revolving, and rotational particle motions and turbulent-induced diffusion. The experimental results revealed that these particle motions effectively eliminated particle deposition on a porous microfiltration membrane and completely alleviated membrane fouling that were serious in traditional filtration modes. These findings shed light on the development of novel membrane filtration systems with enhanced fluid dynamics, for energy-efficient harvesting of clean water from particle-laden water resources. © 2022, The Authors. All rights reserved.

关键词： Turbulent flow

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Constructing 3d Flower-Like Lafe Bimetal Oxides with Abundant Mesoporous and controllable Active Sites for High-Efficient Phosphorus Removal: Synthesis, Mechanism, and Application

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SSRN 2022年

作者： Jing, Xiaoxu Li, Yungui Shen, Yi Li, Qingqing Fang, Qile Advanced Institute of Natural Sciences Beijing Normal University at Zhuhai Zhuhai519087 China Sichuan Provincial Sci-Tech Cooperation Base of Low-cost Wastewater Treatment Technology Department of Environmental Engineering Southwest University of Science and Technology Mianyang621010 China State Key Laboratory of Water Environment Simulation School of Environment Beijing Normal University Beijing100875 China Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province College of Environment Zhejiang University of Technology Hangzhou310032 China

The design of high-performance porous adsorbents for phosphorus removal is a persistently hot topic to maintain a sustainable aquatic ecosystem. In the present study, a self-templating strategy using LaFe cyanometallates (CMs) as precursors was adopted to prepare porous LaFe bimetal oxides with optimizable structure and composition for phosphate adsorption. The results showed that a high supplied LaIII/FeII ratio enabled an adequate coordination polymerization in the preparation of LaFe CM precursor and led to a striking three-dimensional (3D) structure of "twin lotus flower" with high coordinated water content, which resulted in a 3D flower-like LaFe oxide with high surface area and high porosity (mainly in mesopore). The LaFe oxide of LaFe15T possessing the optimal La/Fe ratio (1.5:1) exhibited the most superior performance of phosphate adsorption, where La was confirmed to be the main active site for phosphate capture via ligand exchange mechanism. The batch and column tests of phosphate adsorption showed that the 3D flower-like LaFe oxides are effective adsorbents for phosphate removal. Therefore, the structure optimization in the template preparation stage is an effective strategy to design porous LaFe bimetal oxides as high-performance phosphorus removal materials. © 2022, The Authors. All rights reserved.

关键词： Structural design

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Will Coal Price Fluctuations Affect Renewable Energy Substitution and Carbon Emission? A Computable General Equilibrium-Based Study of China

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Energy Engineering 2021年第4期118卷 1009-1026页

作者： Wenhui Zhao Yibo Yin Lu Mao Konglu Zhong Guanghui Yuan Hai Huang Yige Yang College of Economics and Management Shanghai University of Electric PowerShanghai200090China Zhejiang Electric Power Construction Co. Ltd.Ningbo315000China Zhejiang Huayun Electric Power Engineering Design Consulting Co. Ltd.Hangzhou310014China Fintech Research Institute&School of Information Management and Engineering Shanghai University of Finance and EconomicsShanghai200433China State Key Joint Laboratory of Environment Simulation and Pollution Control(SKLESPC) School of EnvironmentTsinghua UniversityBeijing10084China State Grid Integrated Energy Planning and D&R Institute Beijing10084China

Changes in the energy price system will determine the direction of evolution of the energy industry *** a country where coal is the dominant energy source,what is the effect of coal price fluctuations on China’s industry development costs and energy consumption structure?To investigate this problem,this paper utilized an economy–energy–environment computable general equilibrium *** this study,four aspects were analyzed:Energy supply side,proportion of renewable energy consumption,macroeconomy,and changes in CO_(2) *** results of this study show that an increase of 10%–20%in coal prices contributes to a shift into using renewable energy,which leads to energy saving and emission *** energy and clean energy rose by 0.57%–4.47%in the energy structure,but this has a certain negative impact on the *** gross domestic product(GDP)fell by 0.07%–0.18%.As a result,the decline in coal prices became an obstacle to renewable energy substitution and energy *** addition,we put forward policy suggestions according to the results in energy,economic,and environmental effects.

关键词： Coal price computable general equilibrium multi-scenario simulation renewable energy

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Nitrogen-cycling microbial community functional potential and enzyme activities in cultured biofilms with response to inorganic nitrogen availability

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Journal of environmental Sciences 2019年第2期31卷 89-99页

作者： Shuangshuang Li Chengrong Peng Taisheng Cheng Chun Wang Liangliang Guo Dunhai Li Key Laboratory of Algal Biology Institute of HydrobiologyChinese Academy of Sciences Hebei Engineering Research Center for Water Pollution Control and Water Ecological Remediation College of Energy and Environmental EngineeringHebei University of Engineering National University of Tainan Department of Biological Sciences and Technology Environmental Simulation and Pollution Control State Key Joint Laboratory and State Environmental Protection Key Laboratory of Microorganism Application and Risk Control(SMARC) School of EnvironmentTsinghua University

Biofilms mediate crucial biochemical processes in aquatic ecosystems. It was hypothesized that eutrophication may promote the growth of biofilms, resulting in larger numbers of functional genes. However, the metabolic activity and the roles of biofilms in N cycling will be affected by ambient inorganic nitrogen availability, not by the abundance of functional genes. Biofilms were cultured either with replete inorganic nitrogen(N-rep) or without exogenous inorganic nitrogen supply(N-def) in a flow incubator, and the N-cycling gene abundances(nifH, N_2 fixation; amoA, ammonia oxidation, archaea and bacteria; nirS and nirK, denitrification) and enzyme activities(nitrogenase and nitrate reductase) were analyzed. The results showed that, comparing the N-def and N-rep biofilms, the former contained lower nifH gene abundance, but higher nitrogenase activity(NA), while the latter contained higher nifH gene abundance, but lower NA. Different patterns of NA diel variations corresponded to the dynamic microbial community composition and different stages of biofilm colonization. Ammonia oxidizing bacteria(AOB), detected only in N-def biofilms, were responsible for nitrification in biofilms. N-rep biofilms contained high nirS and nirK gene abundance and high denitrification enzyme activity, but N-def biofilms contained significantly lower denitrification gene abundance and activity. In general,the strong N_2 fixation in N-def biofilms and strong denitrification in N-rep biofilms assured the balance of aquatic ecosystems. The results suggested that evaluation of the functional processes of N cycling should not only focus on genetic potential, but also on the physiological activity of biofilms.

关键词： Cultured biofilms Nitrogen availability Nitrogen-cycling enzymes Nitrogen-cycling genes

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Single Atom Photocatalysts: Synthesis, Characterization and Applications in the Fields of environment and Energy

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Cailiao Daobao/Materials Reports 2020年第2期34卷 03056-03068页

作者： Li, Huihui Zhang, Yuanzheng Dai, Yunrong Yu, Yanxin Yin, Lifeng State Key Laboratory of Environmental Simulation and Pollution Control School of Environment Beijing Normal University Beijing100875 China School of Water Resources and Environment China University of Geosciences Beijing100083 China

The green and clean photocatalytic process can degrade pollutants and produce energy, which is an important means to solve environment and energy problems. However, it is difficult to realize large-scale application due to the cost and efficiency of photocatalytic materials. In recent years, the emergence and development of single atom photocatalyst have injected new vitality into this field, and the research on its synthesis, characterization and application has become a hotspot in many fields such as materials, chemistry, environment and energy. Compared with traditional supported catalyst, the metal particle dispersion on the surface of the single atom photocatalyst is atomic. Single atom photocatalyst can present a higher catalytic activity and selectivity, but there are still many challenges remaining in synthesis strategy, characterization and application way: main obstacle in the synthesis process lies in that high surface energy can lead to the instability of single atom. Traditional characterization techniques also lack the ability to analyze the morphology, structure and chemical environment of the single atom. At pre-sent, the research on the application of single atom photocatalyst is mostly an extension of the traditional research field. These problems become the key shackle of its development, but also the focus of the research in this field. Oversea and domestic researchers have made a great effort in the synthesis, characterization and application of single atom photocatalytic materials and achieved a lot of great results: (i) in terms of synthesis, to solve the reunite problem of single atom, researches have improved the traditional synthesis strategy, such as liquid-phase synthesis, atomic layer deposition etc. And advanced synthesis methods such as pyrolysis, flame spray pyrolysis and electrostatic self-assembly have been introduced. (ii) In terms of characterization, the development of advanced ato-mic scale analysis techniques such as spherical

关键词： Atoms

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