The recovery of useful materials from earth-abundant substances is of strategic importance for industrial processes. Despite the fact that Si is the second most abundant element in the Earth's crust, processes to form Si nanomaterials is usually complex, costly and energy-intensive. Here we show that pure Si nanoparticles (SiNPs) can be derived directly from rice husks (RHs), an abundant agricu...

A coupling of low-temperature sulfuric acid-assisted carbonization and H3PO4 activation was employed to convert NaOH-pretreated rice husks into activated carbons with extremely high surface area (2028 m(2) g(-1)) and integrated characteristics. The influences of the activation temperature and impregnation ratio on the surface area, pore volume of activated carbons were thoroughly investigated. ...

Rice husk is a waste product whose utilization not optimal in Indonesia. husks contain organic materials the form of cellulose, hemicellulose, and lignin; minerals silica, alkali, trace elements. The silica content rice very high, ranging from 87-97% to other minerals. Silica nanoparticles were synthesized through various methods, including sol-gel method, combustion combination obtain purity s...

The aim of this research was to analyze the physical and chemical properties rice bran with husk addition. percentage addition 0%, 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90% 100%. Husks were grounded mixed homogeneously. mixture analyzed for properties, proximate analysis van Soest analysis. variables in study included visualization bran, specific gravity (SG), bulk density (BD), moisture cont...

Activated carbon from rice husk ash (AC-RH) and hazelnut husks (AC-HH) modified by Diopside (AC-RH/Diop, AC-HH/Diop) composites were synthesised applied for the adsorption of Copper Methylene blue industrial effluents. was provided sol-gel method activated prepared husks. The formation AC/Diop characterised FT-IR, FESEM, BET, XRD analyses. Effects pH, amount adsorbent, contact time at 10 mg L−1...

Rice husk is an agricultural waste that has the potential source of silica in low-cost zeolite synthesis. The objectives this study were 1) extraction rice husks as synthetic raw materials, 2) synthesis and characterized ZSM-5 from silica. Silica was carried out by soaking using a heated 15% NaOH solution. Furthermore, 10% HNO3 solution added to pH 7 for 12 hours. filtrate dried oven hours at 1...