主题词：Concrete and Cement Materials Research; Sustainable Supply Chain Management; Recycling and Waste Management Techniques; Innovative concrete reinforcement materials; Extraction and Separation Processes; Recycled Aggregate Concrete Performance; Biodiesel Production and Applications; Hybrid Renewable Energy Systems; Environmental Impact and Sustainability; Energy and Environment Impacts; Thermochemical Biomass Conversion Processes; Recycling and utilization of industrial and municipal waste in materials production; Solar Thermal and Photovoltaic Systems; Adsorption and biosorption for pollutant removal; Metal Extraction and Bioleaching; Membrane Separation Technologies; Municipal Solid Waste Management; Photovoltaic System Optimization Techniques; Microplastics and Plastic Pollution; Natural Fiber Reinforced Composites; Solar Radiation and Photovoltaics; Innovations in Concrete and Construction Materials; Biofuel production and bioconversion; Additive Manufacturing and 3D Printing Technologies; Solar-Powered Water Purification Methods