Sorption of norfloxacin, sulfamerazine and oxytetracycline by KOH-modified biochar under single and ternary systems

Bioresource Technology
Jiwei LuoHailong Wang

Abstract

Pollution of water by single antibiotics has been investigated in depth. However, in reality, a wide range of different contaminants is often mixed in the aquatic environment (contaminant cocktail). Here, single and competitive sorption dynamics of ionizable norfloxacin (NOR), sulfamerazine (SMR) and oxytetracycline (OTC) by both pristine and modified biochars were investigated. Sorption kinetics of the three antibiotics was faster in ternary-solute than single-solute system. Sorption efficiency was enhanced in the competitive system for NOR by the pristine biochar, and for OTC by both the pristine biochar and the modified biochar, while SMR sorption by the pristine biochar and the KOH-modified biochar was inhibited. Sorption was governed by electrostatic interactions, π-π EDA and H-bonds for antibiotics sorption by biochar. SMR and OTC sorption by biochar was influenced by cation bridging and surface complexation, respectively. This research finding will guide the development of treatment procedures for water polluted by multiple antibiotics.

Citations

Nov 2, 2019·Environmental Geochemistry and Health·Shaopan XiaHailong Wang
Aug 14, 2020·Environmental Science and Pollution Research International·Guiwei LiangJing Zhao
Sep 18, 2020·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Jinpeng WangJinghong Zhou
Jul 3, 2020·Environmental Science and Pollution Research International·Guiquan CheLaisheng Li
Jan 8, 2020·International Journal of Environmental Research and Public Health·Nguyen Thi Minh TamXudong Zhou
Sep 7, 2018·Environmental Science and Pollution Research International·Ruining LiXiaoyun Xie
Dec 2, 2020·Environmental Pollution·Sammani RamanayakaMeththika Vithanage
Sep 10, 2020·Chemical Engineering Journal·Xiuru YangYong Sik Ok
Mar 12, 2021·Environmental Science and Pollution Research International·Chenchen LiuChaozhen Hu
Jul 12, 2020·Bioresource Technology·Anastasiah N NgigiSören Thiele-Bruhn
Nov 6, 2021·Environmental Science and Pollution Research International·Yingbo DongHai Lin

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