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

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

doi:10.1016/j.scitotenv.2017.03.087

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

Sci Total Environ. 2017 Aug 15:592:546-553. doi: 10.1016/j.scitotenv.2017.03.087. Epub 2017 Mar 17.

Authors

Su Liu¹, Wei-Hua Xu², Yun-Guo Liu³, Xiao-Fei Tan¹, Guang-Ming Zeng¹, Xin Li¹, Jie Liang¹, Zan Zhou¹, Zhi-Li Yan¹, Xiao-Xi Cai⁴

Affiliations

¹ College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China.
² College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China. Electronic address: whxu@hnu.edu.cn.
³ College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China. Electronic address: liuyunguo@hnu.edu.cn.
⁴ College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China; College of Art and Design, Hunan First Normal University, Changsha 410205, PR China.

PMID: 28318694
DOI: 10.1016/j.scitotenv.2017.03.087

Abstract

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.

Keywords: Adsorption; Biochar; Copper modification; DOX; Water treatment.

MeSH terms

Adsorption
Charcoal / chemistry*
Copper / chemistry*
Doxycycline / isolation & purification*
Water
Water Pollutants, Chemical / isolation & purification*
Water Purification / methods*

Substances

Water Pollutants, Chemical
biochar
Water
Charcoal
Copper
Doxycycline