Dye removal using cashew nut shell activated carbon

Abstract

Activated carbon prepared from agricultural byproducts and wastes could be used as an absorbent for dye removal from aqueous solution. Moreover, Vietnam has presently become one of the world’s biggest cashew processing countries. Cashew nut shell has been considered as a hazardous solid waste. The wasted cashew nut shell should be used as a low cost source of activated carbon absorbent. The main approaches of this study are to optimize the conditions of activated carbon production from cashew nut shell and understand the adsorption mechanism of how the dye absorb onto cashew nut shell activated carbon.