Facile synthesis of Cu(II) impregnated biochar with enhanced adsorption activity for the removal of doxycycline hydrochloride from water

• DOI: 10.1016/j.scitotenv.2017.03.087
• Publication Date: 2017-03-17T02:47:54Z
• Authors: Su Liu; Wei-hua Xu; Yun-guo Liu; Xiao-fei Tan; Guang-ming Zeng; Xin Li; Jie Liang; Zan Zhou; Zhi-li Yan; Xiao-xi Cai
• Keywords: Charcoal; Doxycycline; 0211 other engineering and technologies; Water; Adsorption; 02 engineering and technology; Copper; Water Pollutants, Chemical; 6. Clean water; Water Purification

In this study, the effect factors and mechanisms of doxycycline hydrochloride (DOX) adsorption on copper nitrate modified biochar (Cu-BC) was investigated. Cu-BC absorbent was synthesized through calcination of peanut shells biomass at 450°C and then impregnation with copper nitrate. The Cu-BC has exhibited excellent sorption efficiency about 93.22% of doxycycline hydrochloride from aqueous solution, which was double higher than that of the unmodified biochar. The experimental results suggest that the adsorption efficiency of DOX on the Cu-BC is dominated by the strong complexation, electrostatic interactions between DOX molecules and the Cu-BC samples. Comprehensively considering the cost, efficiency and the application to realistic water, the Cu-BC hold the significant potential for enhancing the effectiveness to remove DOX from water.