Unwanted remains, discarded residues, and byproduct materials that are not required by the initial user are known as wastes. In Ethiopia, improper solid waste management becomes endemic and it affects the health conditions, comforts, and freedom of town communities. Improper solid waste management can also adversely affect infrastructure damages, socioeconomic conditions, and environmental and health problems. So, awareness creation among the communities is necessary. The main objective of the study was to assess the management of existing solid waste activities and reverse logistic systems in Tepi town. The impacts of improper solid waste management were reduced through waste accumulation, transportation, recycling, and waste removal. Available pieces of information for the study were gathered from 450 near house places and 549 survivals. The collected data were analyzed by using Vensim system dynamics software, and the obtained results were modeled by a system dynamic cause and effect relationship diagram. Finally, the appropriate recommendations for communities, municipals, and institutions were provided.
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http://dx.doi.org/10.1155/2022/8391616 | DOI Listing |
Small
January 2025
School of Energy Science and Engineering and Jiangsu Key Laboratory of Process Enhancement and New Energy Equipment Technology, Nanjing Tech University, Nanjing, Jiangsu Province, 211816, China.
The application of micro-nano size photovoltaic waste silicon (wSi) as an anode material for lithium-ion battery holds significant practical potential; However, it faces a series of challenges related to the volume expansion of Si during cycling. In this study, a simple, efficient, and eco-friendly microwave method is proposed for the rapid preparation of graphene-coated silicon materials (wSi@rGO) in just a few seconds, in which graphene as the stable interface mitigates structural failure caused by significant volume expansion, enhances electron and ion conductivity, inhibits undesirable side reactions between silicon and electrolyte, and promotes the stability of solid electrolyte interface (SEI). Importantly, the instantaneous high temperature generated by microwaves facilitates the formation of interfacial SiC chemical bonds, which strengthen the interaction between Si and graphene, thereby reducing Si delamination.
View Article and Find Full Text PDFEnviron Pollut
January 2025
114 Geological Brigade of Guizhou Geological and Mineral Exploration and Development Bureau, Zunyi, 563000, China; Karst Water Resources and Environment Academician Workstation of Guizhou Province, Zunyi 563000, China.
Sudden groundwater pollution in karst areas poses a serious threat to drinking water safety. Tracing contamination sources is crucial for managing and remediating groundwater pollution. Traditional tracing methods often lack accuracy, so this study combined multiple techniques to trace and quantify pollution sources near the municipal solid waste (MSW) landfill in Zunyi City, Guizhou Province, China.
View Article and Find Full Text PDFAdv Sci (Weinh)
January 2025
State Key Laboratory of Clean Energy Utilization, Institute for Thermal Power Engineering, Zhejiang University, Hangzhou, 310058, China.
L-Aspartic acid (L-Asp) poses a dual function, which can affect the evaporation and crystallization process of the high-salinity brine by altering the physical or chemical properties of the salts. MSWI (municipal solid waste incineration) fly ash washing leachate, as a typical high-salinity brine, is utilized here to validate this hypothesis under the simulation guidance. Since L-Asp has stronger adsorption energy on the (110) crystal face of CaCO, L-Asp can facilitate the preferential growth of more valuable vaterite during the softening process (pretreatment before crystallization).
View Article and Find Full Text PDFJ Air Waste Manag Assoc
January 2025
School of Emergency Management and Safety Engineering, China University of Mining and Technology (Beijing), Beijing, China.
Dust emissions from open-pit mining pose a significant threat to environmental safety and human health. Currently, the range of dust suppressants used in coal mining is limited, often failing to account for their suitability across various stockpiles. This oversight results in poor infiltration after application, leading to insufficient crust formation and reduced durability.
View Article and Find Full Text PDFEnviron Sci Pollut Res Int
January 2025
Department of Chemistry, Utkal University, Bhubaneswar, 751 004, Odisha, India.
This research highlights a sustainable approach for the design and synthesis of a magnetic nickel ferrite (NiFeO) catalyst reutilizing industrial waste, specifically iron ore tailing and Raney nickel catalyst processing waste, by simple co-precipitation method. Transforming waste materials into high-performance catalysts, this study aligns with the principles of a circular economy, addressing both environmental waste and pollution. Structural characterization by X-ray diffraction (XRD) and microscopic (FESEM and TEM) revealed the formation of well crystalline nano ferrite with NiFeO nanoparticles with cubic spinel structure.
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