PrefaceChapter 1: Materials for Energy Conversion and StorageMaterial Perspective for Hole Transport Material-Free Perovskite Solar Cell: A Mini ReviewSynthesis of Li-Ion Battery Cathode Material: Conversion of Cheap Mixed Hydroxide Precipitate to High Performance LiNi0.5Mn0.3Co0.2O2Production of NaNi0.5Co0.3Mn0.2O2 (Na-NCM 532) for Sodium-Ion Battery via Combination MethodOne-Pot Combustion Synthesis of Lithium Nickel Cobalt Aluminium Oxide Cathode Material for Lithium-Ion BatterySynthesis and Characterization of Cellulose Acetate Membrane from Corn (Zea mays) Husk as Lithium-Ion Battery Electrolyte MembraneChapter 2: Biomass Conversion and ProcessingDevelopment and Properties Improvement of Tea Dregs-Based Biodegradable Packaging Formulated with Starch and Poly(Lactic Acid)Tensile Properties Characterisation of Hybrid Luffa/GCW Fiber Reinforced Polymer CompositeA Study on Shore D Hardness of Areca Husk Fibre Reinforced Polyester Resin Composite: Impact of Fibre MaturityNatural Rubber Latex as a Sustainable Alternative Binder for Pigment Printing of TextilesExtraction of Bio-Based Carbon Materials from Agricultural Waste as Additives for the Development of an Eco-Friendly Bio-Based GreaseA New Green Solvent: Synthesis and Characterization of Natural-Deep-Eutectic-Solvent (NADES) for Application on Aqueous-Two-Phase System (ATPS) for Extraction of AnthocyaninInvestigation of Betel Palm Sheath during Punch/Die Shear CuttingEffect of Chemically Pretreated Water Hyacinth Co-Digested with Poultry Litter in Anaerobic DigestionChapter 3: Wastewater TreatmentPhotocatalysts Comparison of Low Mn-Doped SrTiO3 (SrTi1-xMnxO3; x=1% and 3%)Pineapple Stalk-Based Synthesized Activated Carbon for Effective Adsorption of Hexavalent Chromium in Aqueous SolutionsDecolorization Kinetics of Azo Dye (Methyl Orange) in Fenton Process with High Entropy Alloys as CatalystChapter 4: Water Quality and TreatmentFabrication of Graphene-Modified Polyvinylidene Fluoride-co-Hexafluoropropylene Porous Polymeric Flat Sheet MembranesA Comparative Assessment and Decision-Making Approach of Water Quality Evaluation of Mahanadi Basin, OdishaEvaluation of the Quality of Groundwater for Irrigation Purposes in Karur District, Tamilnadu, South India