检索结果-内蒙古大学图书馆

SSRN 2022年

作者： Yuan, Junjun Zhao, Xin Cao, Xinyu Wang, Gongting Guo, Yali Ji, Xiaonan Hu, Wei Li, Min Beijing Key Lab for Source Control Technology of Water Pollution College of Environmental Science and Engineering Beijing Forestry University Beijing100083 China Engineering Research Center for Water Pollution Source Control & Eco-remediation College of Environmental Science and Engineering Beijing Forestry University Beijing100083 China Shanghai Investigation Design & Research Institute Co. Ltd. Shanghai200335 China China Three Gorges Corporation Shanghai200335 China College of Environmental Science and Engineering Tongji University Shanghai200092 China

Phosphate solubilizing bacteria (PSB)-assisted phytoextraction can enhance the removal of toxic metals by plants from contaminated soil. Here we investigated the promotion effects of a Pb-tolerant PSB strain, Leclercia adecarboxylata L1-5, on assisting Pb phytoextraction by Celosia cristata L.. The results showed that PSB inoculation could increase the plant shoot and root biomass by 34.90% and 55.56% under 800 mg kg -1 Pb. Pb contents in the root and shoot of C. cristata L. were enhanced 4.06 and 1.72-fold by PSB inoculation, resulting in a bioaccumulation factor (BCFshoot) of 0.2, a translocation factor (TF) of 1.92, and a maximum total Pb extraction amount of 222.94 μg kg -1. The positive effects of PSB on Pb bioaccumulation by C. cristata L. could be attributed to its abilities of increasing soil available phosphorus. PSB inoculation benefited osmotic potential balance and membrane stability in the plant leaves, as evidenced by 3.39-fold increase of the soluble protein, 71.39% decrease of malondialdehyde and 74.31% decrease of hydrogen peroxide. The main mechanism of the enhancement of Pb phytoextraction efficiency induced by PSB inoculation could be summarized as helping Pb absorption by root elongation, and increasing endurable Pb concentration by osmotic regulation and detoxification ability optimization. © 2022, The Authors. All rights reserved.

关键词： Bioremediation

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Polyethylene microplastics hamper aged biochar’s potential in mitigating greenhouse gas emissions

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Carbon Research 2025年第1期4卷 1-14页

作者： Chen, Yalan Wang, Zhibo Zhang, Anqi Li, Yang Sun, Ke Jiang, Chenrun Gunina, Anna Aloufi, Abeer S. Liang, Xinru Han, Zichen Xiao, Yue Zhang, Yunqian Du, Zhangliu Zhu, Shishu Kuzyakov, Yakov State Key Laboratory of Water Environment Simulation School of Environment Beijing Normal University Beijing100875 China College of Life Sciences Beijing Normal University Beijing100875 China Department of Urban Engineering Graduate School of Engineering The University of Tokyo Tokyo113-8656 Japan Agrarian and Technological Institute RUDN University Miklukho-Maklaya st. 6 Moscow117198 Russia Department of Biology College of Science Princess Nourah Bint Abdulrahman University P.O. Box 84428 Riyadh11671 Saudi Arabia Beijing Key Laboratory of Biodiversity and Organic Farming College of Resources and Environmental Sciences China Agricultural University Beijing100193 China The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters Ministry of Education School of Environment and Energy South China University of Technology Guangzhou510006 China Department of Soil Science of Temperate Ecosystems Department of Agricultural Soil Science University of Goettingen Göttingen37077 Germany Moscow117198 Russia

While biochar effectively reduces greenhouse gas emissions, the coincident microplastics will alter these benefits. To assess the long-term efficacy of biochar application in reducing emissions amidst microplastic interference, we investigated the interactive effects of polyethylene microplastics (1%–5% wt) and decadal biochar addition (aged biochar) on C and N stability in a Fluvic Cambisol. Aged biochar and polyethylene individually reduced CO2 emissions by 49% and 18%, respectively, over 91-day incubation. This was due to decreased soil aggregation, dissolved organic matter (DOM) content, and increased DOM aromaticity, which reduced microbial biomass and chitinase activity associated with soil organic matter (SOM) decomposition. This ultimately led to increased accumulation of microbial necromass carbon (MNC) to soil stable carbon pool. Interestingly, the coexistence of polyethylene diminished the efficacy of biochar in mitigating CO2 emissions (+ 44 ~ 82%) and stabilizing MNC (-18 ~ 23%). This was because the interaction between polyethylene and biochar facilitated macroaggregate formation and DOM accumulation and decreased DOM aromaticity, which increased microbial biomass and chitinase activity for SOM decomposition. Similar to soil C dynamics, aged biochar largely reduced N2O emissions by 54%, due to decreased nirK but increased nifH genes. Polyethylene increased N2O emissions by 5% and 25% in biochar-free and aged biochar soil, respectively, likely through upregulation of nirS and nirK but downregulating nifH gene expression. Thus, polyethylene microplastics may undermine the benefits of biochar in mitigating climate change, highlighting the necessity to recognize microplastics as a global change factor and to incorporate their role in elemental cycling alongside their global transport. Graphic Abstract: (Figure presented.) © The Author(s) 2025.

关键词： Greenhouse gas emissions

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Decipher Factors controlling Sulfonamides Adsorption Onto Mesoporous Carbon

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SSRN 2022年

作者： Zhao, Hongjun Lyu, Yitao Hu, Jingrun Li, Min Sun, Weiling College of Environmental Science and Engineering Beijing Forestry University Beijing100083 China Key Lab for Source Control Technology of Water Pollution Beijing Forestry University Beijing100083 China College of Environmental Sciences and Engineering Peking University Beijing100871 China The Key Laboratory of Water and Sediment Sciences Ministry of Education Beijing100871 China State Environmental Protection Key Laboratory of All Material Fluxes in River Ecosystems Beijing100871 China International Joint Laboratory for Regional Pollution Control Ministry of Education Beijing100871 China

Mesoporous carbons (MCs) exhibit excellent removal efficiencies to various organic chemicals. However, how and what extent the properties of chemicals influence their adsorption onto MCs are poorly understood. Here, we investigated the adsorption of 22 sulfonamides (SAs) onto four MCs, and further uncovered the adsorption mechanisms and major factors determining the adsorption of SAs by density functional theory calculation and partial least-squares path model (PLS-PM). The results showed that the adsorption constants of linear and Freundlich isotherms (log K D and log K F ) displayed positive relationships with excess molar refraction (E) and McGowan’s molar volume (V), while the Freundlich nonlinearity coefficient (n) presented a negative correlation with E and V. The PLS-PM model further revealed that the binding energies of π-π interactions (BE(π-π)) and hydrogen bond (BE(H)) and the hydrophobicity (log K ow ) of SAs were the direct factors influencing the adsorption. Among them, BE(π-π) displayed the largest impacts (λ = -0.731, p 0.05) on log K D . Five molecular descriptors, E, V, energy of the highest occupied molecular orbital (E HOMO ), hardness (H), and most positive net charge on carbon atom (Q c + ), were selected as the indirect factors affecting log K D . The adsorption amounts of most SAs decreased with increasing pH, due to the increased electrostatic repulsion, reduced log K ow of SAs, and declined BE(π-π) and (BE(H) at higher pH. This study is the first attempt to decipher quantitatively the direct and indirect factors determing the adsorption of SAs onto MCs. © 2022, The Authors. All rights reserved.

关键词： Least squares approximations

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Corrigendum to “Self-assembly of Fe 3 O 4 with natural tannin as composites for microalgal harvesting” [Fuel 321 (2022) 124038]

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Fuel 2023年 344卷

作者： Xiaoyu Wang Chuang Liu Linlin Qin Wenyan Liang Beijing Key Lab for Source Control Technology of Water Pollution College of Environmental Science and Engineering Beijing Forestry University Beijing 100083 PR China

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A Three-Dimensional Analytical Model for Performance Evaluation of Thermoelectric Generators

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SSRN 2024年

作者： Pang, Dandan Zhang, Aibing Wang, Baolin Li, Guangyong Lou, Jia Henan Province Key Laboratory of Water Pollution Control and Rehabilitation Technology Henan University of Urban Construction Pingdingshan467036 China Zhejiang-Italy Joint Lab for Smart Materials and Advanced Structures School of Mechanical Engineering & Mechanics Ningbo University Ningbo315211 China School of Engineering Western Sydney University PenrithNSW2751 Australia

A three-dimensional (3D) theoretical model for thermoelectric generators (TEGs) has been developed in this paper, resulting in analytical solutions for power output and energy conversion efficiency. The model comprehensively takes into account convective heat transfer between the thermoelectric legs and their ambient environment, along with 3D heat conduction within the ceramic substrates at both hot and cold ends. Numerical results highlight the prominent influence of convective heat loss from legs’ surfaces on efficiency, particularly in taller legs or with higher heat convection coefficients, while maintaining minimal impact on power output. Notably, neglecting 3D heat conduction in ceramic substrates significantly inflates the estimated performance of TEGs. Furthermore, the proposed 3D model can be streamlined into a one-dimensional (1D) form through the introduction of an impact factor to quantify convective heat loss from the legs, and an effective thermal conductance for the ceramic substrate. The proposed theoretical model serves as a valuable tool for simplifying the modeling process and optimizing the design of actual TEGs. © 2024, The Authors. All rights reserved.

关键词： Thermoelectric equipment

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Enhanced Tar Reforming Performance at Low Temperature by Ce/La-Doped Hydrochar-Supported Nickel Catalysts

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SSRN 2023年

作者： Tao, Yijing Dou, Xiaomin Peng, Nana Gai, Chao Liu, Zhengang Beijing Key Lab for Source Control Technology of Water Pollution College of Environmental Science and Engineering Beijing Forestry University Beijing100083 China Research Center for Eco-Environmental Sciences Chinese Academy of Sciences 18 Shuangqing Road Beijing100085 China University of Chinese Academy of Sciences Beijing100049 China Department of Applied Chemistry School of Engineering Tohoku University Miyagi Sendai980-8577 Japan

The catalytic reforming of biomass tar to syngas-especially under mild temperature-is an attractive albeit elusive route, necessitating the manufacture of highly efficient catalysts, in particular, from inexpensive, sustainable renewable resources as a prerequisite. As a proof-of-concept application, a series of Ce/La-doped hydrochar-supported nickel catalysts, employing hydrochar derived from pinewood sawdust as the support, nickel as the active sites, and Ce or La as the promoter species, were used as the tar-reforming catalysts for low-temperature steam reforming of tar derived from the steam gasification of sewage sludge. After the optimization of synthetic variables and operation conditions, the as-made Ni0.1/Ce0.05-HC catalysts simultaneously exhibited boosted activity, selectivity and recyclability than the Ni/HC counterpart as well as reported state-of-the-art catalysts at a low reforming temperature of 600 oC. This exceptional catalytic performance was mainly attributed to the appropriate inclusion of cerium on the hydrochar-based nickel catalyst, which favored the water-gas shift, boudouard reaction and coke gasification, thereby imparting the materials with remarkable resistance against metal sintering and coke deposition during the steam reforming process. The result in this work underscores that the controlled cooperation between Ni species and hydrochar support by addition of Ce, which pertain to the hydrothermal processing technique, is a promising blueprint toward effective thermo-chemical conversion of waste biomass. © 2023, The Authors. All rights reserved.

关键词： Gasification

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Integrated analysis of using high-value microalgae for tetracycline treatment with biomass utilization: Responses, removal pathway, physiological and metabolomic characterization

Water Cycle

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water Cycle 2025年

作者： Yaqian Yuan Zeyuan Wang Ganlin Hu Yu Hong Beijing Key Lab for Source Control Technology of Water Pollution College of Environmental Science and Engineering Beijing Forestry University Beijing 100083 China Engineering Research Center for Water Pollution Source Control & Eco-Remediation College of Environmental Science and Engineering Beijing Forestry University Beijing 100083 China Hebei Key Laboratory for Emerging Contaminants Control and Risk Management College of Environmental Science and Engineering Beijing Forestry University Beijing 100083 China

Antibiotic-contaminated wastewater poses serious threats to the ecological environment. While using microalgae for antibiotic removal has been extensively studied, this study provides a comprehensive and integrated analysis of the physiological and metabolic response mechanisms of Chlorella sp. HL to tetracycline (TC). The results showed that Chlorella sp. HL exhibited strong TC resistance and high removal efficiencies (98.63–99.95%). Low TC concentrations (<10 mg/L) promoted microalgal growth, while higher concentrations (>20 mg/L) inhibited its growth. Pigment contents (chlorophyll a, chlorophyll b, and carotenoids) generally increased under the stimulation of TC, except for carotenoids at 1 mg/L TC. The photosynthetic activity of Chlorella sp. HL was significantly affected, and it was reduced at higher concentrations of TC. Antioxidant enzyme activities and malondialdehyde (MDA) content increased with TC concentration, indicating TC could cause oxidative stress. In addition, TC altered the high-value substance contents of Chlorella sp. HL, with protein and lipid contents initially declining but subsequently increasing, while polysaccharide content gradually rose. Metabolomic analysis indicated that Chlorella sp. HL responded to TC stress by regulating carbohydrate metabolism and other pathways. This study provides an integrated analysis of the physiological, biochemical, and metabolomic responses of microalgae to TC. This comprehensive analysis provides new insights into how microalgae adapt to and mitigate TC stress, and especially revealing its metabolic response mechanism to TC. In addition, the potential for utilizing microalgal biomass for high-value products production when removing antibiotics has been investigated. This dual focus on bioremediation and resource production is a novel research direction.

关键词： Tetracycline Microalgae Photosynthesis Biochemical composition Metabolic pathways

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Improving real-time forecasting of bay water quality by integrating in-situ monitoring, machining learning, and process-based modeling

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Journal of Environmental Management 2025年 386卷 125816页

作者： Xiong, Rui Xiong, Jianzhi Zheng, Yi Zhang, Jingjie Han, Feng Lu, Haiyan Zheng, Yan Key Laboratory of Water Security Guarantee in Guangdong-Hong Kong-Macao Greater Bay Area of Ministry of Water Resources Ministry of Water Resources of the People's Republic of China Guangzhou510611 China State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control School of Environmental Science and Engineering Southern University of Science and Technology Shenzhen518055 China Eco-Environmental Monitoring and Research Center Pearl River Valley and South China Sea Ecology and Environment Administration Ministry of Ecology and Environment of the People's Republic of China Guangzhou510611 China Shenzhen Municipal Engineering Lab of Environmental IoT Technologies Southern University of Science and Technology Guangdong Shenzhen China State Key Laboratory of Black Soils Conservation and Utilization Key Laboratory of Wetland Ecology and Environment Northeast Institute of Geography and Agroecology Chinese Academy of Sciences Changchun130102 China

Frequent occurrences of disasters such as red tides significantly threaten bay ecosystems, making near real-time water quality forecasting crucial for disaster warning and decision-making. Conventional techniques, such as process-based modeling and in-situ monitoring, struggle to achieve this for the entire bay region when applied independently. This study proposes a hybrid approach that integrates in-situ monitoring, process-based modeling, and machine learning (ML) to address this challenge. The feasibility of the approach was validated using Shenzhen Bay, a cross-boundary bay co-administered by Shenzhen and Hong Kong, as a testbed. ML models exhibited superior performance for location-specific forecasting, achieving Nash-Sutcliffe efficiency (NSE) values of 0.90, 0.84, 0.85, and 0.73 for dissolved oxygen, chlorophyll a, total nitrogen, and total phosphorus, respectively. Forecasting accuracy declined with longer lead times. Additionally, this study developed a dual-clustering method to optimize the selection of monitoring locations, minimizing the number of sites while effectively capturing the water quality across the entire bay. The results suggest that a monitoring network consisting of just two locations can adequately represent the overall water quality conditions within Shenzhen Bay. Using output from the Delft-3D model built for Shenzhen Bay, ML-based surrogate models successfully extended water quality forecasting from the two strategically selected locations to the entire bay area, with NSE values exceeding 0.8 in most regions. The hybrid approach provides a methodological foundation for achieving near real-time water quality forecasting across the entire bay areas, contributing to maintaining water security and preserving valuable ecosystem services in a rapidly changing environment. © 2025 Elsevier Ltd

关键词： In-situ monitoring Machine learning Process-based modeling Short-term forecasting Surrogate modeling water quality

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Efficient Degradation of Sulfamethoxazole by Diatomite-Supported Hydroxyl-Modified UIO-66 Photocatalyst

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SSRN 2023年

作者： Liu, Hui-Lai Zhang, Yu Lv, Xin-Xin Cui, Min-Shu Cui, Kang-Ping Dai, Zheng-Liang Wang, Bei Weerasooriya, Rohan Chen, Xing Key Laboratory of Nanominerals and Pollution Control of Higher Education Institutes School of Resources and Environmental Engineering Hefei University of Technology Hefei230009 China Key Lab of Aerospace Structural Parts Forming Technology and Equipment of Anhui Province Institute of Industry and Equipment Technology Hefei University of Technology Hefei230009 China Hefei University of Technology China National Centre for Water Quality Research National Institute of Fundamental Studies Hantana Kandy Sri Lanka

Sulfamethoxazole (SMX) is a widely used antibiotic to treat bacterial infections prevalent among humans and animals. SMX undergoes several transformation pathways in living organisms and external environments. Therefore, the development of efficient remediation methods for treating SMX and its metabolites is needed. We fabricated a photo-Fenton catalyst using UIO-66 (Zr) metal-organic framework (MOF) dispersed in diatomite by a single-step solvothermal method for hydroxylation (HO-UIO-66). The HO-UIO-66-0/DE assisted Fenton process shows SMX degradation at 94.7% efficiency;however, HO-UIO-66 (Zr) is not stable. We improved the stability of the catalyst by introducing a calcination step. The calcination temperature is critical to improving the catalytic efficiency of the composite (for example, designated as HO-UIO-66/DE-300 to denote hydroxylated UIO-66 dispersed in diatomite calcined at 300 °C). The degradation of SMX by HO-UIO-66/DE-300 was 93.8% in 120 min with 4 mmol/L H2O2 at pH 3 under visible light radiation. The O1s XPS signatures signify the stability of the catalyst after repeated use for SMX degradation. The electron spin resonance spectral data suggests the role of h+, •OH, •O2-, and 1O2 in SMX degradation routes. The HO-UIO-66/DE-300 assisted Fenton process shows potential in degrading pharmaceutical products present in water and wastewater. © 2023, The Authors. All rights reserved.

关键词： Catalysts

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Degradation of Oxytetracycline in Pharmaceutical Wastewater Through Catalytic Ozonation with Novel Catalyst Zeolite 5å-Co-Fe

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SSRN 2023年

作者： Ikhlaq, Amir Naeem, Asma Rizvi, Osama Shaheen Raashid, Muhammad Akram, Asia Masood, Zafar Qi, Fei Mahmood, Muffakir Ahsan GT Road Punjab Lahore54890 Pakistan Sector U DHA Lahore Cantt. 54792 Pakistan Department of Chemical Engineering University of Engineering and Technology KSK Campus Lahore Pakistan Department of Chemistry University of Management and Technology Johar Town Lahore54770 Pakistan Beijing Key Lab for Source Control Technology of Water Pollution College of Environmental Science and Engineering Beijing Forestry University Beijing100083 China Saudi Arabian Parsons Limited Jazan City for Primary & Downstream Industries Saudi Arabia

Public health and the aquatic environment are utterly threatened due to the inevitable pollution produced by pharmaceutical wastewater (PhWW) containing recalcitrant antibiotics. Therefore, traditional treatment systems are abortive for the entire elimination of refractory antibiotics and other contaminants such as COD and BOD5 due to the incidence of a complex mixture of organic compounds in PhWW. Moreover, PhWW has low biodegradability and high toxicity due to persistent antibiotics. This alarming situation has urged the scientific community to develop a more efficient and economical treatment solution for the decontamination of toxic PhWW. Therefore, this study investigated the catalytic performance of zeolite Z5Å coated with dual metals cobalt and iron (Z5Å-Co-Fe) for the abatement of the most persistent organic pollutant oxytetracycline (OTC) as a target pollutant. Likewise, the synthesized catalyst was evaluated on various instrumentation methods such as FTIR, SEM, and EDX analysis. The maximum removal of OTC was 10%, 73%, and 95% with adsorption, O3, and Z5Å-Co-Fe/O3 processes respectively at pH 6, 1.6 mg/min of O3 flow and 15 min of treatment time. Besides, Z5Å-Co-Fe/O3 was a more economical treatment method than others with treatment cost and EEO of 1.47 USD and 1.62 kWh per cubic meter of PhWW respectively. Additionally, the biodegradability of PhWW was increased from 0.30 to 0.51 and is now simply biodegradable for forthcoming treatment. Hereafter, Z5Å-Co-Fe/O3 treated PhWW complied with the National Environmental Quality Standards (NEQS). Later, this novel process may be applied as a pretreatment step for the conventional treatment systems on an industrial scale. © 2023, The Authors. All rights reserved.

关键词： Antibiotics

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