Rice husk burning according to Rice Husk Ash (RHA). This ash is a potential source of amorphous reactive silica, which has a wide range of applications in materials science. Most of the ash is used in the production of Portland cement.



Some possible uses of RHA include as an oil and chemical absorber, soil improver, silicon source, insulation powder in steel mills, as a repellent in the form of a "tar-vinegar" releasing agent in the ceramics industry, as an insulating material. . More specific applications include the use of this material as a catalyst support.