Adsorption of ofloxacin on carbon nanotubes: solubility, pH and cosolvent effects

Journal of Hazardous Materials
Hongbo PengBaoshan Xing

Abstract

The adsorption of ofloxacin (OFL) on carbon nanotubes (CNTs) has been investigated using the solubility, pH and cocolvent effects. In this work, solubilities of OFL and sorption of OFL on three multi-walled CNTs at different pHs and different methanol volume fractions (f(c)) of methanol/water mixture solutions were systematically measured. The solubilities of different OFL species were obtained based on the analysis of pH-dependent solubility. Cationic and anionic OFL showed much higher solubilities than zwitterionic OFL. The highest sorption was not observed at the pH with lowest OFL solubility, indicating hydrophobic interaction was not the dominant sorption mechanism. The sorption decreasing in pH range of 5-8 was consistent with cationic OFL species distribution, suggesting cation exchange may play an important role. With the increased methanol fraction, both OFL solubility and sorption decreased, which was different from hydrophobic organic contaminants (HOCs). Analysis of methanol-fraction-dependent OFL sorption suggested that cosolvent-sorbent (methanol-CNTs) interactions were much stronger than solute-cosolvent (OFL-methanol) interactions. This statement was also confirmed in sorption isotherm study as evidenced by decr...Continue Reading

References

Jul 10, 2002·Journal of Contaminant Hydrology·Dermont C Bouchard
Sep 3, 2002·European Journal of Medicinal Chemistry·Hyoung-Ryun ParkKi-Min Bark
Jul 6, 2007·Journal of Pharmaceutical and Biomedical Analysis·Zhifeng XuQinying Deng
Aug 30, 2008·Environmental Science & Technology·Bo PanBaoshan Xing
Oct 23, 2008·Environmental Science & Technology·Daohui Lin, Baoshan Xingt
Dec 17, 2008·Environmental Science & Technology·Allison A Mackay, Daniel E Seremet
Dec 24, 2008·Pharmacology & Therapeutics·A A ShvedovaV Castranova
Jan 23, 2009·The Science of the Total Environment·Saioa ZoritaLennart Mathiasson
Feb 24, 2009·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·Sevgi Tatar Ulu
Jun 24, 2009·Environmental Science & Technology·Marco Keiluweit, Markus Kleber
Apr 8, 2010·Chemosphere·Raquel A Figueroa-DivaAllison A MacKay
Aug 3, 2010·Journal of Hazardous Materials·Chih-Jen WangChia-Chuan Liu
Aug 19, 2010·Environmental Science & Technology·Fei WangBaoshan Xing

❮ Previous
Next ❯

Citations

Apr 15, 2016·Environmental Science and Pollution Research International·Rusul Khaleel IbrahimShaliza Ibrahim
Aug 28, 2012·Environmental Pollution·Bo PanBaoshan Xing
May 20, 2015·Chemosphere·Yolanda PatiñoInmaculada Rodríguez-Ramos
Jul 9, 2016·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Bin HuangXuejun Pan
Sep 5, 2017·Environmental Science and Pollution Research International·Chi WangBo Pan
Jan 30, 2018·Water Science and Technology : a Journal of the International Association on Water Pollution Research·D T Sponza, P Alicanoglu
Jun 2, 2015·Environmental Science and Pollution Research International·Minhee KimSeunghun Hyun
Sep 12, 2018·Environmental Science and Pollution Research International·Lin WuErping Bi
Nov 1, 2020·Environmental Science and Pollution Research International·Huifen YinXiangjuan Yuan
Jun 25, 2021·Journal of Contaminant Hydrology·Gurleenjot KaurJai Prakash Kushwaha

❮ 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.