Contribution of different sulfamethoxazole species to their overall adsorption on functionalized carbon nanotubes

Environmental Science & Technology
Di ZhangBaoshan Xing

Abstract

Antibiotics pose environmental risks, but their adsorption mechanisms are still unclear. Identifying the contributions of different mechanisms is vital in predicting antibiotic environmental behavior and consequently understanding their environmental risks. This study used functionalized carbon nanotubes (CNTs), namely hydroxylized (MH), carboxylized (MC), and graphitized (MG) multiwalled CNTs, as adsorbents and sulfamethoxazole (SMX) as an adsorbate to study the adsorption mechanisms of ionizable organic contaminants on solid particles. At pH around 3.7, SMX always showed the highest adsorption on different CNTs and the adsorption followed the order of MH > MG > MC. Combining the results on SMX specie analysis, the pH-dependent adsorption is well-explained by hydrophobic and electron-donor-acceptor interactions. The adsorption of neutral SMX is always dominant by contributing generally over 80% to the overall adsorption. A significant contribution of cationic SMX at pH < 3.5 suggested significant contribution of hydrogen bonds to SMX adsorption. The strength of bisphenol A (BPA) inhibiting SMX adsorption was dependent on the concentration ratio of BPA to neutral SMX, instead of to the overall SMX concentration. This result emp...Continue Reading

Citations

Oct 27, 2011·Environmental Science & Technology·Marc TeixidóJordan Peccia
Jun 8, 2013·Environmental Science & Technology·Bo PanBaoshan Xing
Nov 14, 2013·Journal of Environmental Sciences (China)·Mingfang XiaWeiben Yang
May 1, 2012·The Science of the Total Environment·Di WuBaoshan Xing
Jan 24, 2012·Journal of Hazardous Materials·Hongbo PengBaoshan Xing
May 29, 2013·Environmental Pollution·Fei WangBaoshan Xing
Mar 7, 2014·The Science of the Total Environment·Di WuBo Pan
Apr 15, 2016·Environmental Science and Pollution Research International·Rusul Khaleel IbrahimShaliza Ibrahim
Jul 5, 2013·Journal of Zhejiang University. Science. B·Xuan HanXiao-E Yang
Aug 29, 2012·Environmental Pollution·Bo PanDi Xiao
Nov 16, 2013·Journal of Hazardous Materials·Chanil JungYeomin Yoon
Dec 3, 2014·Water Research·Onur Guven Apul, Tanju Karanfil
Nov 22, 2014·Environmental Technology·Tingqiang LiXiaoe Yang
May 18, 2016·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Xingmao Ma, Sarang Agarwal
May 24, 2016·Journal of Environmental Management·Jihyun R Kim, Eunsung Kan
May 24, 2019·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Sofia F SoaresAna L Daniel-da-Silva
Apr 12, 2013·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Yuan TianHui Li
Nov 9, 2018·Current Medicinal Chemistry·Georgeta M SimuCristina A Dehelean
Apr 28, 2020·Environmental Science. Processes & Impacts·Jing LiBo Pan
May 31, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Hiba Mohamed AmeenBeáta Lemli
Sep 5, 2020·Environmental Science and Pollution Research International·Bin LuoKai Zhao

❮ 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.