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Spatial and temporal variations of microplastics in the lower Chao Phraya River, Thailand: an investigation during the COVID-19 pandemic period

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environmental Science and Pollution Research 2025年第11期32卷 6970-6983页

作者： Xue, Wenchao Bhandari, Roshan Tutor, Jasmin Siengpairou, Nitcharat Tabucanon, Allan Sriratana Department of Water Resources and Environmental Engineering School of Engineering and Technology Asian Institute of Technology P.O. Box 4 Klong Luang Pathumthani 12120 Thailand Faculty of Environment and Resource Studies Mahidol University Nakhon Pathom71370 Thailand

This study systematically investigated the abundance, characteristics, and spatial and temporal variations of microplastics (MPs) in the lower Chao Phraya River, Thailand, during the COVID-19 pandemic. The study revealed an average MP abundance of 8.3 ± 5.8 particles/m3, mainly composed of polyethylene (PE) and polypropylene (PP) with fibers and fragments being the predominant shapes. Spatially, MP concentrations exhibited a notable increase downstream, particularly in highly urbanized areas. Temporally, MP concentrations showed slight elevation during the wet season, with clear seasonal variations in MP size and shape distributions attributed to the influence of urban storm runoff. Despite expectations of heightened MP pollution due to the COVID-19 pandemic, the study suggests a potential reduction in MP abundance, likely attributed to decreased socio-economic activities. Nonetheless, the long-term effects remain uncertain, underscoring the imperative for continuous monitoring and effective environmental management strategies. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2025.

关键词： Rivers

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Prediction of Compaction Parameters Based on the Atterberg Limit by Using a Machine Learning Approach 11th

Prediction of Compaction Parameters Based on the Atterberg L...

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11th EAI International Conference on Advancement of Science and Technology, ICAST 2023

作者： Kassa, Semachew Molla Wubineh, Betelhem Zewdu Geremew, Africa Mulumar Azmatch, Tezera Firew Kumar, Nandyala Darga Faculty of Civil and Water Resource Engineering Bahir Dar University Bahir Dar Ethiopia College of Engineering and Technology Wachemo University Hossaena Ethiopia Faculty of Information and Communication Technology Wroclaw University of Science and Technology Wroclaw Poland Faculty of Civil and Environmental Engineering Addis Ababa Institute of Technology Addis Ababa University Addis Ababa Ethiopia College of Engineering Manthani Jawaharlal Nehru Technological University Hyderabad India

ISBN: (纸本)9783031641503

The compacting parameters are one of the basic elements used to determine the California bearing ratio value, which is used to determine the subgrade strength of infrastructures. The maximum dry density (MDD) and the optimum moisture content (OMC) are the compaction parameters that are determined from the Atterberg limit tests. For this relationship, around 252 soil samples are used to model the relationship between the compaction parameters and the Atterberg limits on the liquid limit (LL), the plastic limit (PL), and the plasticity index. To do this experiment, the random forest (RF), support vector machine (SVM), and decision tree algorithms are used on 80% of the training data and 20% of the testing data. In this model, different performance measurement techniques were used. The mean absolute error, coefficient of determination, mean squared error, and root mean square errors are used to evaluate the performance of the regression model. According to the performance measure, in OMC and MDD, the value of R2 of the random forest algorithm is 0.55 and 0.54, respectively. This relationship is better than any other model, which is done using support vector machines and decision tree algorithms in the case of the coefficient of determination. The most important characteristics are the plasticity index and the liquid limit in maximum dry density and the optimum moisture content, respectively. The paper’s findings may be useful and applicable in many fields of civil engineering. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2025.

关键词： Random forests

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Charcoal Briquette Manufactured from Indonesian Sugar Palm Bunches (Arenga longipes Mogea) as Biomass-Based New Renewable Energy

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Journal of Renewable Materials 2025年第3期13卷 639-652页

作者： Hakim, Luthfi Iswanto, Apri Heri Lubis, Yunida Syafriani Wirawan, Adam Jagwani Batubara, Ridwanti Kim, Nam Hum Antov, Petar Rogoziński, Tomasz Hua, Lee Seng Chen, Lum Wei Selvasembian, Rangabhashiyam Jayusman Sutiawan, Jajang Laboratory of Forest Product Technology Faculty of Forestry Universitas Sumatera Utara Deli Serdang 20353 Indonesia Research Center for Applied Botany National Research and Innovation Agency Cibinong16911 Indonesia Department of Forest Biomaterials Engineering College of Forest and Environmental Sciences Kangwon National University Chuncheon24341 Korea Republic of Faculty of Forest Industry University of Forestry Sofia1797 Bulgaria Department of Furniture Design Faculty of Forestry and Wood Technology Poznan University of Life Sciences Poznan60627 Poland Cawangan Pahang Kampus Jengka Kuantan26400 Malaysia Department of Bio and Natural Resource Faculty of Bioengineering and Technology Universiti Malaysia Kelantan Jeli 17600 Malaysia Department of Environmental Science and Engineering School of Engineering and Sciences SRM University-AP Amaravati522240 India Research Center for Biomass and Bioproduct National Research and Innovation Agency Cibinong16911 Indonesia

The utilisation of sugar palm bunches-charcoal briquettes (SPB-CB) represents a significant advancement in biomass energy. This study aimed to analyse the properties of charcoal briquettes produced from SPB (Arenga longipes). The experiment involved categorising the dimensions of charcoal powder into three specific particle sizes: 20–40 mesh, 40–60 mesh, and particles that could pass through a 60-mesh screen. The charcoal powder will be combined with tapioca as a binding agent at three specific concentrations: 11%, 13%, and 15%. The research findings indicate that the samples underwent 60 mesh passes achieved the maximum briquette density, with an average value of 0.58 g/cm3. The highest attainable compressive strength sample value was 27.52 kgf/cm2, which was attained by employing 60 mesh size and 15% adhesive concentration. The calorimetric investigation showed that SPB-charcoal had the highest calorific value of 25.88 MJ/kg, while the SPB-CB had a little lower caloric value of 24.64 MJ/kg. The ash content and volatile matter values showed that the briquettes with the lowest ash content had values of 10.49% and 32.65%, respectively. Furthermore, the carbon fixation values varied between 16.65% and 52.36%. Thermogravimetric analysis indicates that charcoal derived from SPB exhibits superior thermal characteristics compared to charcoal briquettes. However, thermal properties of SPB charcoal do not show significant differences when compared to charcoal briquettes that have been processed with a mesh size of 20–40 and include 11% adhesive. According to this research, it may be inferred that charcoal briquettes made from sugar palm bunches meet the requirements specified in SNI 01-6235-2000. © 2025 The Authors.

关键词： Brinell Hardness

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Transient free surface flow through 3D fracture networks: PVI approach and geological-entropy-based exploration on spatial disorder

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Computers and Geotechnics 2025年 184卷

作者： Li, Ce Sheng, Jianlong Ye, Zuyang Yao, Chi Xiong, Feng Wa Mutombo, Banza Mike School of Resource and Environmental Engineering Wuhan University of Science and Technology Wuhan430081 China School of Infrastructure Engineering Nanchang University Nanchang330031 China Faculty of Engineering China University of Geosciences Wuhan430074 China

A numerical approach of the parabolic variational inequality (PVI) formulations is proposed for solving transient free surface flow within three-dimensional (3D) fracture networks, while geological entropy is employed to investigate the morphological diversity of free surfaces concerning spatial disorder. Specifically, the related partial differential equations (PDEs), as well as PVI formulations, are presented by rigorously proving the equivalence between the two. The validity of proposed PVI formulations is verified by analytical solution and experimental results, respectively. Subsequently, the methodology of geological entropy is applied to analyze the transient free surface flow in fracture systems with varying trace lengths and spacings. It is found that either narrower spacings or longer trace lengths would be slowing the elevation of free surfaces. Due to spatial disorder of the fracture distribution, transient free surfaces with varied morphology, such as flat, tortuous, and zigzag, are noticed, which can be synthetically explained by local entropy regarding its differential concentrations and clustering modes. The entrogram, associated with the spatial order, is valid for quantitatively describing the magnitude and stability of flow rates by relative entropy and entropy scale, respectively. The developed PVI approach is physically sound, whereby the geological-entropy-based exploration is expected to provide available insights for field evaluation. © 2025

关键词： Radioactive prospecting

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Insight into the efficacy and mechanism of persulfate activation using KHCO3 modified biochar: the overlooked contribution of adsorption

SSRN

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SSRN 2025年

作者： Yue, Xiting Chen, Xuantong Xu, Yin Zhang, Hui Department of Environmental Science and Engineering School of Resource and Environmental Sciences Wuhan University Wuhan430079 China Hubei Key Laboratory of Regional Development and Environmental Response Faculty of Resources and Environmental Science Hubei University Wuhan430062 China

Biochar shows great potential in activating peroxydisulfate (PDS) due to its environment-friendly, cost-efficient, and easily-accessible features, whereas the contribution of adsorption was frequently overlooked in this process. To address this issue, a family of KHCO3 chemically modified biochars were prepared from waste herb residue (KWBC) to uncover the dependence of apparent bisphenol A (BPA) removal on its liquid-solid mass transfer behavior. The KWBC-2 with KHCO3 to waste herb residue mass ratio of 2: 1 shows an excellent PDS activation performance, achieving 95.3% BPA decay in 30 min at 1.0 mM PDS and only 0.3 g/L biochar, and is resistant to different water matrices. The fractions of BPA remained in both aqueous and solid phases were determined to discern the oxidative removal from the apparent removal of BPA. C–OH was identified as adsorption site of reactant (BPA or PDS) and active site for PDS activation by correlating the functional group content of biochar with mass transfer coefficient of reactant or oxidative removal of BPA. The dominant electron transfer pathway was confirmed with chemical quenching or probing experiment, electron paramagnetic resonance technique, and open circuit potential test. The performance of used biochar deteriorated to some extent, but could be largely recovered after thermal treatment, due to the complete regeneration of adsorption ability and the partial restoration of catalytic activity. This study deepened the fundamental understanding on the adsorption and electron-transfer pathway in biochar activated persulfate advanced oxidation process. © 2025, The Authors. All rights reserved.

关键词： Chemical activation

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Nano-bioremediation for the removal of inorganic and organic pollutants from the soil

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environmental Science and Pollution Research 2025年第14期32卷 8698-8716页

作者： Ambaye, Teklit Gebregiorgis Hassani, Aydin Vaccari, Mentore Franzetti, Andrea Prasad, Shiv Aminabhavi, Tejraj M. Rtimi, Sami Department of Environment and Resource Engineering Technical University of Denmark Lyngby2800 Denmark Department of Materials Science and Nanotechnology Engineering Faculty of Engineering Near East University 99138 Nicosia TRNC Mersin 10 Turkey Near East University 99138 Nicosia TRNC Mersin 10 Turkey Department of Civil Environmental Architectural Engineering and Mathematics University of Brescia Via Branze 43 Brescia25123 Italy Department of Earth and Environmental Sciences-DISAT University of Milano-Bicocca Piazza Della Scienza 1 Milan20126 Italy Division of Environment Science ICAR-Indian Agricultural Research Institute New Delhi New Delhi110012 India School of Advanced Sciences KLE Technological University Hubballi580 031 India Uttarakhand Dehradun248 007 India Global Institute for Water Environment and Health Geneva1210 Switzerland

Soil pollution is a significant problem due to harmful toxic substances, particularly organic compounds and heavy metals, resulting from various anthropogenic activities. To address this issue, a synergistic approach involving the use of nanotechnology and bioremediation has been proposed. Nano-bioremediation is a very efficient, cost-effective, and environmentally benign approach for reducing both organic and inorganic pollutants. Nanoparticles (NPs) enhance catalytic, adsorptive, and reactive properties, whereas microorganisms and extracts serve as eco-friendly catalysts. The combination of nanomaterials (NMs) and bioremediation techniques has the potential to significantly transform toxic substances either in situ or ex-situ to clean polluted environments. This article reviews recent developments in nano-bioremediation to eliminate organic and inorganic pollutants from contaminated soils. The use of NPs has the potential to enhance soil bioremediation for the removal of harmful substances through immobilization or stimulation of microbial activities and enzymes involved in the remediation process. It also discusses the mechanism of the interaction of NMs with other microorganisms and their roles in the remediation of polluted environments. Finally, the review discusses future perspectives and challenges regarding the importance of interactions between the soil microbiome, NPs, and contaminants to develop microbe-based nano-remediation strategies for organically and inorganically polluted environments. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2025.

关键词： Nanoclay

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Impacts of circular economy strategies on product carbon footprint: A lithium-ion battery case

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CIRP Annals 2025年

作者： Zhou, Haiwei Li, Wen Kara, Sami Hauschild, Michael Zwicky Faculty of Engineering and Information Technology The University of Melbourne Melbourne Australia Sustainability in Manufacturing and Life Cycle Engineering Research Group School of Mechanical and Manufacturing Engineering The University of New South Wales Sydney Australia Division for Quantitative Sustainability Assessment Department of Environmental and Resource Engineering Technical University of Denmark Lyngby Denmark

Circular economy (CE) strategies hold substantial potential for reducing product carbon footprints (CF), yet their effectiveness and specific impact pathways remain unclear. This study develops a quantitative framework for calculating and comparing the CF under various CE strategies, demonstrated with a case of lithium-ion batteries (LIBs). Results show CE strategies have varying impacts on material and other flows in a battery lifecycle and do not necessarily reduce CF. A combination of six CE strategies halves the CF of LIBs, suggesting additional efforts are required for deeper decarbonisation. This framework offers insights to guide effective CE actions and advance sustainable products. © 2025 The Authors

关键词： Lithium-ion batteries

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Degradable Polymer Electrolytes Encapsulated with Ionic Liquids for Enhanced Ionic Conductivity and Stable Interfaces in Lithium-Metal Batteries

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Langmuir 2025年第18期41卷 2025 Apr 30页

作者： Tu, Xinyu Li, Haiyan Huang, Xiaojia Teng, Jinmei Li, Jiachen Zhao, Jie Li, Kai Faculty of Environmental Science and Engineering Kunming University of Science and Technology Kunming650500 China Yunnan Key Laboratory of Phosphogypsum Recycling and Ecological Utilization Kunming650500 China Yunnan International Joint R&D Center for Waste Resource Recovery in Metallurgical and Chemical Industries Kunming650500 China Guizhou Sunward Chemical New Materials Research Institute Co. Ltd. Guiyang550000 China

In green and sustainable energy utilization, solid electrolytes are called to be environmentally friendly and degradable. Meanwhile, there has been a concerted effort to improve ion transport and interfacial stability of solid-state electrolytes to enhance solid-state battery (SSLBs) development. Herein, we have made a polymer electrolyte encapsulated with a degradable ester-based ionic liquid (IL) of 1-butyl-1-methylpyrrolidinium bis(trifluoromethanesulfonyl)imide (Pyr14TFSI). This enables rapid degradation to be achieved, up to complete degradation within 12 h under alkaline conditions, owing to the robust interplay occurring between the Pyr14+ cations present in the IL and the ether functional groups;this interaction fosters a consistent encapsulation of the IL within the polymeric matrix structure, thereby introducing a large number of Li+. At 25 °C, an ionic conductivity of 7.6 × 10-4 S cm-1 is achieved. In addition, Pyr14TFSI facilitates the in situ development of a solid electrolyte interphase (SEI) layer abundant in lithium fluoride (LiF) and lithium nitride (Li3N), which effectively suppresses lithium dendrite growth, representing stable cycling performance even at 25 °C. Therefore, this work provides a simple and feasible approach for designing green SSLBs with degradability, fast ion conduction, and good interface stability. © 2025 American Chemical Society.

关键词： Solid-State Batteries

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Effect of double coating on microencapsulation of levofloxacin using the particles from gas-saturated solutions process as a controlled-release system

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Discover Chemistry 2025年第1期2卷 1-13页

作者： Sharmin, Tanjina Takeshita, Toshihiro Ouchi, Mikio Yoshida, Koji Znad, Hussein Saptoro, Agus Sarker, Zaidul Islam Irie, Keiichi Satho, Tomomitsu Nioh, Atsushi Masuda, Takaaki Muneyoshi, Yuuki Terayama, Suzuko Mishima, Kenji Department of Chemical Engineering Faculty of Engineering Fukuoka University Fukuoka Japan Research Institute of Composite Materials Fukuoka University Fukuoka Japan Resource Circulation Faculty of Environmental Engineering Fukuoka University Fukuoka Japan Faculty of Sciences Fukuoka University Fukuoka Japan Western Australian School of Mines: Minerals Energy and Chemical Engineering Faculty of Science and Engineering Curtin University Perth Australia Department of Chemical Engineering Faculty of Engineering Curtin Malaysia Graduate School Miri Sarawak Malaysia Department of State Program and Food Science Northern Marianas College Saipan USA Faculty of Pharmaceutical Sciences Fukuoka University Fukuoka Japan Yokohama Research Center Pola Chemical Industries Yokohama Japan

A novel double-coating technique was employed to encapsulate levofloxacin (LVF), a potent antibacterial drug, using the particles from gas-saturated solutions (PGSS) process to achieve extended release. The primary coating utilized glyceryl tristearate (GT), a lipid with a high melting point (72 °C), followed by a secondary coating with trimyristin (TM), a lipid with a lower melting point (52 °C). For comparison, a single-coating approach was also explored, using the biocompatible polymer poly-(ε-caprolactone) (PCL). The resulting particles were characterized for their shape, size, and LVF encapsulation efficiency, with confirmation of LVF entrapment provided by Fourier transform infrared (FTIR) spectroscopy, and X‐ray powder diffraction (XRD) analysis. The particles, with an average diameter of 95.3 ± 16.5 μm, exhibited an encapsulation efficiency of up to 92.1 ± 2.5%. Furthermore, in vitro release studies revealed that the double-coated microcapsules effectively suppressed the initial burst release and provided controlled, extended release of LVF (t30D = 36.3%), demonstrating the efficiency of this encapsulation method for prolonged drug delivery.

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Significant spatiotemporal pattern of nitrous oxide emission and its influencing factors from a shallow eutropic lake in Inner Mongolia,China

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Journal of environmental Sciences 2025年第3期149卷 488-499页

作者： Guohua Li Sheng Zhang Xiaohong Shi Shengnan Zhao Liyang Zhan Xueru Pan Fan Zhang Haifeng Yu Yue Sun Lauri Arvola Jussi Huotari Water Conservancy and Civil Engineering College Inner Mongolia Agricultural UniversityHohhot 010018China Inner Mongolia Water Resource Protection and Utilization Key Laboratory Hohhot 010018China State Gauge and Research Station of Wetland Ecosystem Wuliangsuhai LakeBayan Nur 014404China Key Laboratory of Global Change and Marine-Atmospheric Chemistry Third Institute of OceanographyMinistry of Natural ResourcesXiamen 361005China Faculty of Biological and Environmental Sciences Ecosystems and Environment Research ProgrammeLammi Biological StationUniversity of HelsinkiLammi FI-16900Finland Masinotek Oy Ensimmainen Savu 2Vantaa FI-01510Finland

Eutrophic shallow lakes are generally considered as a contributor to the emission of nitrous oxide(N_(2)O),while regional and global estimates have remained *** due to a lack of data and insufficient understanding of the multiple contributing *** study characterized the spatiotemporal variability in N_(2)O concentrations and N_(2)O diffusive fluxes and the contributing factors in LakeWuliangsuhai,a typical shallow eutrophic and seasonally frozen lake in Inner Mongolia with cold and arid *** N_(2)O concentrations of the lake exhibited a range of 4.5 to 101.2 nmol/L,displaying significant spatiotemporal *** lowest and highest concentrations were measured in summer and winter,*** spatial distribution of N_(2)Ofluxwas consistent with that of N_(2)O ***,the hotspots of N_(2)O emissions were detected within close to the main inflow of *** wide spatial and temporal variation in N_(2)O emissions indicate the complexity and its relative importance of factors influencing emissions.N_(2)O emissions in different lake zones and seasons were regulated by diverse *** influencing the spatial and temporal distribution of N_(2)O concentrations and fluxes were identified as WT,WD,DO,Chl-a,SD and ***,the same factor demonstrated opposing effects on N_(2)O emission in various seasons or *** research improves our understanding of N_(2)O emissions in shallow eutrophic lakes in cold and arid areas.

关键词： Nitrous oxide Spatial and temporal variation Controlling factors Shallow lakes

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