Sorption kinetics of ofloxacin in soils and mineral particles

Environmental Pollution
Bo PanDi Xiao

Abstract

The environmental behavior of antibiotics is not well known and the precise environmental risk assessment is not practical. This study investigated the sorption kinetics of ofloxacin, a widely used antibiotics, on soil particles with different organic carbon contents as well as soil components (a humic acid, ferric oxide and kaolinite). Two-compartment sorption kinetics were mathematically recognized (except ferric oxide because of its very fast sorption). The apparent sorption rate and the contribution of fast sorption compartment decreased with the increased organic carbon content with the exception of humic acid, suggesting that the slow sorption sites were partially located in organo-mineral complex. The OFL concentration-dependent sorption kinetics suggested that the slow sorption compartment was not controlled by diffusion process as indicated by slower sorption at higher OFL loading. The difference between OFL sorption kinetics and those of hydrophobic organic contaminants was discussed and possible mechanism of OFL two-compartment sorption was proposed.

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Citations

Aug 26, 2014·Environmental Science and Pollution Research International·Haixia DingYue Wu
Jan 11, 2014·Environmental Toxicology and Chemistry·Feng-Jiao PengJian-Liang Zhao
Jan 7, 2014·The Science of the Total Environment·Xiaoping LiaoMulindankaka Evalde
Jul 23, 2016·Environmental Science and Pollution Research International·Sergio SantiagoAllan Knopf
Dec 2, 2017·Environmental Science and Pollution Research International·Deming DongZhiyong Guo
Mar 7, 2020·Environmental Monitoring and Assessment·Babatunde Kazeem Agbaogun, Klaus Fischer
Feb 19, 2017·Environmental Science and Pollution Research International·Xinyan GuoNa Wang
Aug 7, 2017·Environmental Science and Pollution Research International·Jia Li, Hua Zhang
Mar 20, 2021·The Science of the Total Environment·Huang ZhangDi Zhang

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