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Removal of sulfamethoxazole and ciprofloxacin from aqueous solutions by graphene oxide.
J Hazard Mater. 2015 Jan 23; 282:201-7.JH

Abstract

As a promising nanomaterial, graphene-oxide (GO) has shown great sorption potential for environmental contaminants. This study evaluated the ability and mechanism of GO to remove sulfamethoxazole (SMX) and ciprofloxacin (CIP) from aqueous solution. Experimental and modeling results showed that GO effectively sorbed both CIP and SMX with maximum sorption capacity of 379 and 240 mg g(-1), respectively. The sorption of CIP was mainly controlled by the electrostatic attractions; while SMX sorption was mainly though π-π EDA attraction on the basal planes of the GO. Solution pH showed strong effect on the sorption ability of GO to the two antibiotics: at pH of 2, GO sorption ability decreased for both CIP and SMX; at pH of 9, GO completely lost SMX sorption ability but still showed strong sorption to CIP. Both NaCl and CaCl2 decreased CIP sorption onto GO and CaCl2 showed high efficiency even at low ionic strength. The effect of NaCl and CaCl2 on SMX sorption was weaker, but higher ionic strength also reduced the sorption of SMX onto GO. At solution pH of 2, sorption of CIP destabilized GO suspension to form aggregates. Results obtained from this work demonstrated that GO can be used as an effective adsorbents to removal antibiotics from water.

Authors+Show Affiliations

Department of Agricultural and Biological Engineering, University of Florida, Gainesville, FL 32611, USA.Department of Agricultural and Biological Engineering, University of Florida, Gainesville, FL 32611, USA. Electronic address: bg55@ufl.edu.Department of Plant, Soil and Microbial Sciences, Michigan State University, East Lansing, MI 48824, USA.

Pub Type(s)

Journal Article
Research Support, U.S. Gov't, Non-P.H.S.

Language

eng

PubMed ID

24755346

Citation

Chen, Hao, et al. "Removal of Sulfamethoxazole and Ciprofloxacin From Aqueous Solutions By Graphene Oxide." Journal of Hazardous Materials, vol. 282, 2015, pp. 201-7.
Chen H, Gao B, Li H. Removal of sulfamethoxazole and ciprofloxacin from aqueous solutions by graphene oxide. J Hazard Mater. 2015;282:201-7.
Chen, H., Gao, B., & Li, H. (2015). Removal of sulfamethoxazole and ciprofloxacin from aqueous solutions by graphene oxide. Journal of Hazardous Materials, 282, 201-7. https://doi.org/10.1016/j.jhazmat.2014.03.063
Chen H, Gao B, Li H. Removal of Sulfamethoxazole and Ciprofloxacin From Aqueous Solutions By Graphene Oxide. J Hazard Mater. 2015 Jan 23;282:201-7. PubMed PMID: 24755346.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Removal of sulfamethoxazole and ciprofloxacin from aqueous solutions by graphene oxide. AU - Chen,Hao, AU - Gao,Bin, AU - Li,Hui, Y1 - 2014/04/06/ PY - 2013/12/31/received PY - 2014/03/24/revised PY - 2014/03/28/accepted PY - 2014/4/24/entrez PY - 2014/4/24/pubmed PY - 2015/8/11/medline KW - Antibiotics KW - Emerging contaminants KW - Graphene oxide KW - Sorption KW - Stability SP - 201 EP - 7 JF - Journal of hazardous materials JO - J Hazard Mater VL - 282 N2 - As a promising nanomaterial, graphene-oxide (GO) has shown great sorption potential for environmental contaminants. This study evaluated the ability and mechanism of GO to remove sulfamethoxazole (SMX) and ciprofloxacin (CIP) from aqueous solution. Experimental and modeling results showed that GO effectively sorbed both CIP and SMX with maximum sorption capacity of 379 and 240 mg g(-1), respectively. The sorption of CIP was mainly controlled by the electrostatic attractions; while SMX sorption was mainly though π-π EDA attraction on the basal planes of the GO. Solution pH showed strong effect on the sorption ability of GO to the two antibiotics: at pH of 2, GO sorption ability decreased for both CIP and SMX; at pH of 9, GO completely lost SMX sorption ability but still showed strong sorption to CIP. Both NaCl and CaCl2 decreased CIP sorption onto GO and CaCl2 showed high efficiency even at low ionic strength. The effect of NaCl and CaCl2 on SMX sorption was weaker, but higher ionic strength also reduced the sorption of SMX onto GO. At solution pH of 2, sorption of CIP destabilized GO suspension to form aggregates. Results obtained from this work demonstrated that GO can be used as an effective adsorbents to removal antibiotics from water. SN - 1873-3336 UR - https://www.unboundmedicine.com/medline/citation/24755346/Removal_of_sulfamethoxazole_and_ciprofloxacin_from_aqueous_solutions_by_graphene_oxide_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(14)00249-0 DB - PRIME DP - Unbound Medicine ER -