Development of an acid resistant porous pot using rice husk ash waste

Rice husk is an agricultural waste, generated by the rice producing countries, mainly being utilized as cattle feed and cheap source of fuel for the boilers of rice mills. Ash generated after burning is regarded as a waste which contains >80% silica and some free carbon. Acid resistance characteristics of silica enable the possibility of the use of rice husk ash for the development of acid resistant ceramic products. Acid resistant porous ceramic pots are useful for electroplating industries. The present study was planned to develop slip cast acid resistant porous ceramic pots using a mix of rice husk ash as the main raw material and clay. Three different compositions were tried with rice husk ash content in the range of 50-70 wt%. Sintering was carried out in the temperature range of 1150-1200 degrees C. Final products were characterized by various physical, mechanical, phase content and acid resistant properties