Although, rice husk has various applications such as in construction materials [15], for the adsorbent of heavy metals [16], and in the design of gas furnace as an alternative to coal [17] or alongside pulverized coal which is conducive to gas phase combustion [18], it has not yet become a practical option to use for energy in Nigeria.
Most of rice husks generated during rice milling are burnt in the field. This kind of traditional disposal method has caused widespread environmental concerns since it causes air pollution. As a result of the health and environmental concerns, many countries have imposed new regulations to restrict field burning activities [19].
Subsequently, methods to dispose and to use agricultural residues such as rice straw and rice husk have shifted towards the global “waste to resource” agenda [20].