主题词：Adsorption and biosorption for pollutant removal; Catalytic Processes in Materials Science; Extraction and Separation Processes; Advanced Photocatalysis Techniques; Catalysis and Oxidation Reactions; biodegradable polymer synthesis and properties; TiO2 Photocatalysis and Solar Cells; Minerals Flotation and Separation Techniques; Membrane Separation Technologies; Mesoporous Materials and Catalysis; Nanomaterials for catalytic reactions; Catalysis and Hydrodesulfurization Studies; Phosphorus and nutrient management; Chemical Synthesis and Reactions; Waste Management and Environmental Impact; Process Optimization and Integration; Polymer Nanocomposites and Properties; Biodiesel Production and Applications; Metal Extraction and Bioleaching; Enzyme Catalysis and Immobilization; Industrial Gas Emission Control; Analytical chemistry methods development; Membrane-based Ion Separation Techniques; Thermochemical Biomass Conversion Processes; Biofuel production and bioconversion