This volume contains papers from the 9th RMUTP International Conference on Science, Technology and Innovation for Sustainable Development: Challenges towards the Digital Society 2018 (9th RMUTP ICON SCi-2018, 21-22 June 2018, Bangkok, Thailand) which present readers with results of the last researches in the field of phytochemistry and biotechnologies, materials science and mechanical engineering, environmental engineering and waste recycling.Table of Contents: Preface Chapter 1: Phytochemistry and Advanced Biotechnologies Characterization of Physical and Mechanical Properties of Bleaching Paper from Rice Straw Newly Established Method for Analyzing the Natural Ethylene Indicators Dissolved in Water Immersed Plant Using Acidified Potassium Manganate Nutritional Properties, Antioxidant and Anti-Acetylcholinesterase Activities of Pleurotus ostreatus Phytochemistry and Antioxidant Activity of Molineria latifolia Herb. Extracts Phytochemicals and Pharmacological Activities from Banana Fruits of Several Musa Species for Using as Cosmetic Raw Materials Preliminary Phytochemicals and Pharmacologic Activities Assessment of White and Pink Nelumbo nucifera Gaertn. Flowers Evaluation of Phytochemicals and Pharmacological Activities of Ben-Cha-Lo-Ka-Wi-Chian Remedy Uses of Coconut Residue from Coconut Oil with Extracted Curcuma longa Production for Juvenile Red Claw Crayfish Feeding Correlation and Path Coefficient for Economic Traits of Fruit Mulberry (Morus spp.) Based on Criteria Mulberry Selection Fluorescence Detection of Hydrazine Hydrate Using Carbon Nanodots Synthesized from Mandarin Rind Alternative Energy from Fresh Water Weed, Hydrilla verticillata Comparison of Conventional and Ultrasound-Assisted Extraction Techniques for Extraction of Phenolic Compounds from Coconut Husk Amperometric Biosensors Using Different Alcohol Oxidases Comparison of Industrial Microwave Drying and Fluidized Bed Drying Techniques on the Quality of Jasmine Instant Rice Surface Plasmon Biosensor Platform for Food Industry Chapter 2: Environmental Engineering and Waste Recycling Fabrication and Characterization of Particle Board from Coffee Husk Waste Analysis of Standardized Precipitation Evapotranspiration Index over Chiangrai and Phayao Utilization of Eggshell Ash for Removal of Organic Micro-Pollutants in Contaminated Water Utilizing Agricultural Waste as an Environmentally Friendly Cement Composite A Study on Characterization of Biomass Fly Ash Heat Illness Related Meteorology over Chiangmai Using Automatic Weather Station Observed Data The Application of Remote-Controlled Assisted Surface Water Sampling Determination of Total Arsenic Using Microwave Digestion Technique-Graphite Furnace Atomic Absorption Spectrophotometry Chapter 3: Composites and Polymers Improvement of Mechanical Properties and Water Absorption in Wheat Gluten by Epoxidized Natural Rubber The Effects of Sulfonated Graphene Oxides (sGO) on Ion Conductivity and Permeability of the Vanadium Redox Flow Batteries Membranes Based on Sulfonated Poly(Ether Ether Ketone) Composite Effect of Latex Rubber and Rubber Powder as an Admixture on Bending Strength of Cement Mortars The Study on Optimum Spray Parameters and Characterization of Flame Sprayed PVC Coating Chapter 4: Functional Materials Low-Cost Sputtering Process for Carbon Nanotubes Synthesis Facile Synthesis of CeO2/SnO2 N-N Heterostructure The Study of Synthesis Parameters of Synthesis Ni-Rich of LiNi0.75Mn0.15Co0.10O2 Powder by Co-Precipitation Method The Effect of Sintering Temperature on Physical Properties of Leucite Ceramics The Effect of Leucite Ceramics on Mechanical Properties of Silicone Coating Characterization of Antiferromagnetism in Double Perovskites Ba2FeMoO6 Prepared by Solid State Method Study, Magnetic Properties of BaTiFeO3 Perovskite Prepared by Solid State Method Chapter 5: Research and Design of Equipment and Machines Impacts of Current and Voltage Harmonics for Industrial Power Network Optimal Reactive Power Control in Power System with Particle Swarm Optimization Technique Design and Construction of a Mini Magnetic Levitation Train Design and Construction the RF Ion Source for Compact Accelerator with 30 keV Energy Analysis of Stress Distribution for Powder Compression Molding by Finite Element Method Optical Device Adapted to Smartphone for Direct Imaging Retinal Blood Vessels Effect of Ammonium Sulphate ((NH4)2 SO4) on Microstructure and Mechanical Properties of SA-213-Gr.T22 and SA-210-Gr.A1 Steel in the Water Tube Boiler Matching Impedances Fresnel Equations Calculation for Layered Optical Structures Multiple Reflections Modeling for Multi-Layered Optical Structures