PrefaceChapter 1: Materials and Methods of Pollutants Detection and DegradationFood Safety Level Assessment on Heavy Metals (As, Cd, Li, Ni, Pb, Ti) Concentration in Tilapia Fish (Oreochromis sp.) from Sleman and Bantul YogyakartaMitigation of Ammonia Gas Emissions from Chicken Layer Excreta Using Indigenous Microorganisms Produced by Fermented Tobacco LeavesPrediction of Rhodamine B Dye Content in Chilies Paste Using VIS-NIR SpectroscopySynthesis of Dialdehyde Carboxymethyl Cellulose-Crosslinked-Chitosan for Preconcentration of Cu(II) Using Batch MethodOptimization of Silicon Selective Leaching with Glycerol Using Response Surface Methodology (RSM)Effect of Calcination Temperature on the Preparation of Mixed Oxide SnO2/CeO2/TiO2 to Increase the Photodegradation Activity of Methylene Blue under Visible LightA Bifunctional Chitosan/Alginate Nanoparticles (CANPs) for Trace Metals Adsorption as well as Antibacterial Polyelectrolyte Complex (PEC) MaterialsThe Adsorption Characteristics of Heavy Metals in Acid Mine Drainage from Abandoned Tin Mines on Lightweight Expanded Clay Aggregate (LECA)The Effectiveness of Coffee Waste Ground by Simple Washing on the Adsorption of Methylene BlueEffective Removal of Methylene Blue Dye from Bimetallic Organic Framework M/Fe-MOF (M=Ni, Co)Efficient Visible-Light-Induced Photocatalytic Removal of Salicylic Acid Using Sulfur-Doped Fe3O4/SiO2/TiO2 CompositeSynthesis of Magnetically Separable Fe3O4/TiO2-Ag with Enhanced Photocatalytic Performance under Visible Light for Degradation of Metanil YellowSynthesis of Amikacin Modified Carbon Dots-Doped Nitrogen and Zinc for Escherichia coli DetectionKinetic and Isotherm Study on the Adsorption of Crystal Violet in Water Using Low-Cost Adsorbent of Coal Fly AshIsotherm and Kinetic Adsorption of Malachite Green Using Low-Cost Adsorbent of Coal Fly AshAntibiotic Removal Capacity of Coconut Activated Carbon from Microwave-Assisted SynthesisChapter 2: Rare Earth Elements Recovery TechnologiesPrecipitation of Rare Earth Element from Indonesian Coal Fly Ash Using Sodium SulfateOptimization of Neodymium Separation from Cerium and Samarium for Nuclear Fuel Burn-Up DeterminationDissolution of Rare Earth Elements Concentrate from Xenotime Sand with Strong AcidsEffect of CsNO3 on Neodymium (Nd) and Cesium (Cs) Recovery in Nuclear Fuel Using Precipitation MethodSeparation of Dysprosium (Dy) from Rare Earth Hidroxide Using Precipitation MethodsChapter 3: Functional MaterialsMicrowave-Assisted Biosynthesis of ZnO Using Sentul (Sandoricum koetjape) Peel Extract: Effect of Microwave Irradiation PowerFunctionalization of Mg/Al Hydrotalcite with Ascorbic Acid for Gold Nanoparticles SynthesisThe Effect of Sonication Time for Synthesis of Magnetic Mesoporous Nanosilica using Cetyltrimethylammonium Bromide (CTAB) as Surfactant-TemplateChapter 4: Materials for Electronics and Energy StoragePANI/Porous Carbon Palm Kernel Shell via In Situ Polymerization Method for Supercapacitor ElectrodeRelaxation of the Distorted Lattice of 4H-SiC (0001) Surface by Post-Oxidation AnnealingChapter 5: Physical ChemistryAtomic Vibrational Effect on Vacancy Concentration of Gray Tin (α-Sn): Computation Based on Density Functional TheoryFirst Principle Calculations of Magnetic Proximity Effect Induced Valley Splitting on Heterointerface WS2/CoO(111)Modelling of Nano Silica Formation from Geothermal Silica Using Co-Precipitation MethodChapter 6: Phytochemistry, Pharmacology and Biomass ProcessingDepolymerization of Cellulose Components from Oil Palm Empty Fruit Bunches in Bleaching and Delignification ProcessChemical Compositions of Essential Oil of Agarwood (Aquilaria crassna) Harvested in Phu Quoc Island, VietnamPropolis Bioactive Compounds of Stingless Bees (Tetragonula laeviceps) from Mount Merapi Slope, Sleman, Yogyakarta