Adsorption of antibiotic ciprofloxacin on carbon nanotubes: pH dependence and thermodynamics

Chemosphere
Haibo LiBaoShan Xing

Abstract

The environmental risks of antibiotics have attracted increasing research attention, but their environmental behaviors remain unclear. In this study, functionalized carbon nanotubes (CNTs), namely, hydroxylized (MH), carboxylized (MC), graphitized multi-walled CNTs (MG) and single-walled CNTs (SW) were used as adsorbents and ciprofloxacin (CIP) as an adsorbate to investigate the effect of pH and temperature on sorption and desorption processes. Sorption isotherms of CIP were fitted well by Freundlich and Dubinin-Ashtakhov models. Highly nonlinear isotherms of CIP were observed, indicating the highly heterogeneous site energy distribution on CNTs. At all pHs, SW had the highest sorption for CIP due to its largest surface area among all CNTs. Sorption distinction between MH and MC was explained by π-π electron donor-acceptor interactions. For SW, CIP sorption was thermodynamically favorable and endothermic associated with an entropy driven process, while the reverse process occurred for MC and MG. The rearrangement of CNTs bundles/aggregates and covalent bond formation may be responsible for CIP desorption hysteresis on CNTs. Desorption of antibiotics from CNTs may lead to potential exposure, particularly under changing environme...Continue Reading

References

Jul 21, 2004·Environmental Science & Technology·Elham A GhabbourTammy L Smith
May 13, 2005·Journal of Environmental Quality·Michael SanderJoseph J Pignatello
Dec 31, 2005·Environmental Science & Technology·Cheng Gu, K G Karthikeyan
May 24, 2008·Environmental Science & Technology·Hyun-Hee ChoWilliam P Ball
Oct 23, 2008·Environmental Science & Technology·Daohui Lin, Baoshan Xingt
Nov 27, 2008·Environmental Science & Technology·Kun YangLizhong Zhu
Dec 17, 2008·Environmental Science & Technology·Guang-Cai ChenGary Owens
Jan 30, 2009·Environmental Science & Technology·Bo Pan, Baoshan Xing
Jun 24, 2009·Environmental Science & Technology·Marco Keiluweit, Markus Kleber
Dec 25, 2009·Environmental Science & Technology·Zhenyu WangBaoshan Xing
Mar 31, 2011·Environmental Science & Technology·Xingqiang WuZhi Wang
Jul 8, 2011·Water Research·S A C CarabineiroJ L Figueiredo
Aug 2, 2011·Colloids and Surfaces. B, Biointerfaces·Zhaohui LiShannon M Emard
Jan 24, 2012·Journal of Hazardous Materials·Hongbo PengBaoshan Xing
Jun 5, 2012·Environmental Science & Technology·Xiaoran ZhangThilo Hofmann
Nov 6, 2012·Water Research·Qingfeng WuWei-Teh Jiang

❮ Previous
Next ❯

Citations

Apr 24, 2014·Journal of Hazardous Materials·Hao ChenHui Li
Jun 4, 2015·Environmental Science and Pollution Research International·Zhaobing GuoFengling Liu
Apr 15, 2016·Environmental Science and Pollution Research International·Rusul Khaleel IbrahimShaliza Ibrahim
May 31, 2015·Journal of Hazardous Materials·Mohamed Chaker Ncibi, Mika Sillanpää
Jul 26, 2015·International Journal of Phytoremediation·Shaoling WuLinhua Xia
May 20, 2015·Chemosphere·Yolanda PatiñoInmaculada Rodríguez-Ramos
May 13, 2015·Journal of Colloid and Interface Science·Jian-Rong LiMing-Lai Fu
Dec 3, 2014·Water Research·Onur Guven Apul, Tanju Karanfil
Oct 22, 2014·Environmental Science and Pollution Research International·Fei YuDongsu Bi
May 18, 2016·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Xingmao Ma, Sarang Agarwal
Dec 8, 2016·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Jorge M P J GarridoE Manuela P J Garrido
Jan 14, 2017·Environmental Science and Pollution Research International·Xiangrui KongJingge Shang
Jan 25, 2017·Nanomedicine : Nanotechnology, Biology, and Medicine·Josefine HirschfeldMichael Giersig
Apr 25, 2018·Environmental Science and Pollution Research International·Wanying WuNan Chen
Jun 27, 2018·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Xiao LiuWeihua Zou
Mar 9, 2020·Environmental Science and Pollution Research International·Damarys H Carrales-AlvaradoAdriana E Moral-Rodríguez
Nov 28, 2018·Current Drug Metabolism·Anjali ChauhanShekhar Agnihotri
Nov 18, 2017·Environmental Science and Pollution Research International·Sarita YadavSonal Singhal
Jan 7, 2019·Environmental Science and Pollution Research International·Dan ZhangWenke Wang
Jan 25, 2020·Environmental Science and Pollution Research International·Zhenyuan LiYanmin Wang
Feb 6, 2017·Environmental Science and Pollution Research International·Dragana Mutavdžić PavlovićJosip Župan
Jun 13, 2020·Polymers·Leili MohammadiGeorge Z Kyzas
May 16, 2020·The Science of the Total Environment·Yangyang ZhangLingyan Zhu
Feb 21, 2019·Journal of Environmental Management·Yujia XiangZhi Zhou
Mar 25, 2021·Environmental Science and Pollution Research International·Yuting WangXiaoli Li

❮ Previous
Next ❯

Related Concepts

Related Feeds

Antifungals

An antifungal, also known as an antimycotic medication, is a pharmaceutical fungicide or fungistatic used to treat and prevent mycosis such as athlete's foot, ringworm, candidiasis, cryptococcal meningitis, and others. Discover the latest research on antifungals here.

Antifungals (ASM)

An antifungal, also known as an antimycotic medication, is a pharmaceutical fungicide or fungistatic used to treat and prevent mycosis such as athlete's foot, ringworm, candidiasis, cryptococcal meningitis, and others. Discover the latest research on antifungals here.