Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/78266
Title: Sorption of norfloxacin, sulfamerazine and oxytetracycline by KOH-modified biochar under single and ternary systems
Authors: Luo, JW
Li, X
Ge, CJ
Muller, K
Yu, HM
Huang, P
Li, JT
Tsang, DCW 
Bolan, NS
Rinklebe, J
Wang, HL
Keywords: Sorption modeling
Antibiotics
Competitive sorption
Organic pollutant
Engineered biochar
Issue Date: 2018
Publisher: Elsevier
Source: Bioresource technology, Sept. 2018, v. 263, p. 385-392 How to cite?
Journal: Bioresource technology 
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, pi-pi 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.
URI: http://hdl.handle.net/10397/78266
ISSN: 0960-8524
EISSN: 1873-2976
DOI: 10.1016/j.biortech.2018.05.022
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