| Silicon dioxide (SiO2) is the most abundant mineral in the world. Plants are the source of this mineral. In recent decades, with the advent of nanotechnology, silica nanoparticles have been found new applications in chemical industry, textile, packaging, biotechnology, agriculture and medicine. Rice husk and straw are rich sources of minerals. Rice husk (RH) has more than 20% silica. Using thermal process in presence of different gasses, the sample of ash of husk and bran of rice produced. To investigate the effect of heat treatment in different conditions, the properties of the samples were determined. Rice husk ash solution was poured on soda solution. Then silica was separated and sodium silicate was formed. By separation and titration of the... |
