  The main research efforts are aimed at finding inexpensive materials that can
be converted into nanostructured carbon-containing materials, such as activated
carbon and graphene. Rice husks are one such material, especially in developing
countries, where more than 95% of Rice husks are produced worldwide. Although
numerous studies have been conducted on the production of activated carbon and
graphene structures from Rice husk, the existing scientific information is
still widely scattered in the literature. Therefore, this review article
provides extensive information on made by various researchers, including the
Institute of combustion problems (Almaty, Kazakhstan), regarding the production
of nanostructured carbon-containing materials from rice husk and its adsorption
characteristics. The properties and pre-treatment of rice husk in relation to
the production of activated carbon and multilayer graphene are discussed. The
activation of rice husk by physical and chemical methods under different
conditions is considered.
