A feasible biochar derived from biogas residue and its application in the efficient adsorption of tetracycline from an aqueous solution

Xiaoyu Sheng; Junkai Wang; Quantao Cui; Wei Zhang; Xinfeng Zhu

doi:10.1016/j.envres.2021.112175

A feasible biochar derived from biogas residue and its application in the efficient adsorption of tetracycline from an aqueous solution

Environ Res. 2022 May 1:207:112175. doi: 10.1016/j.envres.2021.112175. Epub 2021 Oct 4.

Authors

Xiaoyu Sheng¹, Junkai Wang¹, Quantao Cui¹, Wei Zhang², Xinfeng Zhu³

Affiliations

¹ School of Ecology and Environment, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan, 450001, PR China.
² School of Ecology and Environment, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan, 450001, PR China; Faculty of Environmental and Municipal Engineering, Henan Key Laboratory of Water Pollution Control and Rehabilitation Technology, Henan University of Urban Construction, Pingdingshan, 467036, PR China; Henan International Joint Laboratory of Water Cycle Simulation and Environmental Protection, Zhengzhou, 450001, PR China; Zhengzhou Key Laboratory of Water Resource and Environment, Zhengzhou, 450001, PR China; Yellow River Institute for Ecological Protection and Regional Coordination Development, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan, 450001, PR China. Electronic address: zhangwei88@zzu.edu.cn.
³ Faculty of Environmental and Municipal Engineering, Henan Key Laboratory of Water Pollution Control and Rehabilitation Technology, Henan University of Urban Construction, Pingdingshan, 467036, PR China. Electronic address: zhuxf780@163.com.

PMID: 34619130
DOI: 10.1016/j.envres.2021.112175

Abstract

The recovery of carbon materials from biogas residue (BR) could efficiently promote the efficient utilization of waste and the preparation of novel materials. In this study, a green and feasible reagent of citric acid was introduced and applied in the modification of biogas residue biochar (BRC). The modified biogas residue biochar (CABRC) showed a superior adsorption ability due to its higher specific surface area (approximately 6 times that of the BRC). Additionally, the adsorption capacities of CABRC and BRC for TC were 58.25 mg/g and 20.77 mg/g, respectively, while the TC adsorption performance of CABRC was 2.8 times that of BRC. The adsorption of TC by both BRC and CABRC was primarily controlled by physical adsorption and chemical adsorption (including pore filling, hydrogen bonding, π-π DEA interaction, and electrostatic interaction). Therefore, CABRC should be considered an environmentally friendly material due to its higher adsorption performance, which could expand its application in wastewater treatment.

Keywords: Biogas residue biochar; Citric acid; Efficient adsorption; Tetracycline.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Adsorption
Biofuels*
Charcoal / chemistry
Kinetics
Tetracycline
Water Pollutants, Chemical* / analysis

Substances

Biofuels
Water Pollutants, Chemical
biochar
Charcoal
Tetracycline