Work

Highly enhanced adsorption performance of tetracycline antibiotics on KOH-activated biochar derived from reed plants

Year: 2020

Type: article

Abstract: after KOH activation. The biochar surface was electronegative, due to the ionization of oxygen-containing functional groups, such as hydroxyl (-OH) and carboxyl (-COOH) groups. Solution pH had only a weak influence on TC adsorption; neutral conditions favored adsorption. The adsorption kinetics and isotherms were represented well by the pseudo-second-order and Freundlich models, respectively. The chemical multilayer adsorption may play an important role in TC adsorption, which was a spontaneous endothermic reaction. The adsorption process occurred more easily after KOH activation and the adsorption capacity of biochar improved by more than 20 times. These results indicate that preparing reed-derived biochar using KOH activation is an effective way to reduce pollution and utilize a waste resource.

Source: RSC Advances

DOI: 10.1039/c9ra09208k

Authors: Chuanqi Zhao, Junguan Ma, Ziyin Li, Hui Xia, Huan Liu, Yuesuo Yang

Institutions: Shenyang University, Shenyang Academy of Environmental Sciences (China)

Language: English

Topic: Adsorption and biosorption for pollutant removal

Subfield: Water Science and Technology

Field: Environmental Science

Domain: Physical Sciences

SDGs: Responsible consumption and production, Clean water and sanitation

Open Access status: gold

Estimated APC paid: $1,042