摘要：Copper ion in aqueous solution is an essential nutrient for humans, animals and microorganisms. However, the excess of copper ion in aqueous solution produces many toxic and harmful effects on living organisms. Therefore, it is necessary to remove the copper ions in aqueous solution prior to discharge into water bodies. The main aim of this study is to test biochars obtained from the modified corncob as adsorbent for copper ion from aqueous solution. The operating parameters, such as adsorbent dosage, initial solution pH, contact time and pyrolysis temperature of the biochars, were investigated in detail. The operation parameters have an important effect on the removal of copper ion from aqueous solution by biochars derived from the modified corncob. The biochars derived from the modified corncob exhibited an excellent adsorption performance of copper from aqueous solution and can be applied in the removal of copper ions in aqueous solution.
