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Degradation of amoxicillin, ampicillin and cloxacillin antibiotics in aqueous solution by the UV/ZnO photocatalytic process

Chaudhuri, M. and E.S., Elmolla (2010) Degradation of amoxicillin, ampicillin and cloxacillin antibiotics in aqueous solution by the UV/ZnO photocatalytic process. [Citation Index Journal]

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Abstract

The study examined the effect of operating conditions (zinc oxide concentration, pH and irradiation time) of the UV/ZnO photocatalytic process on degradation of amoxicillin, ampicillin and cloxacillin in aqueous solution. pH has a great effect on amoxicillin, ampicillin and cloxacillin degradation. The optimum operating conditions for complete degradation of antibiotics in an aqueous solution containing 104, 105 and 103 mg/L amoxicillin, ampicillin and cloxacillin, respectively were: zinc oxide 0.5 g/L, irradiation time 180 min and pH 11. Under optimum operating conditions, complete degradation of amoxicillin, ampicillin and cloxacillin occurred and COD and DOC removal were 23.9 and 9.7%, respectively. The photocatalytic reactions under optimum conditions approximately followed a pseudo-first order kinetics with rate constant (k) 0.018, 0.015 and 0.029 min -1 for amoxicillin, ampicillin and cloxacillin, respectively. UV/ZnO photocatalysis can be used for amoxicillin, ampicillin and cloxacillin degradation in aqueous solution. © 2009 Elsevier B.V. All rights reserved.

Item Type:Citation Index Journal
Uncontrolled Keywords:Amoxicillin; Aqueous solutions; Irradiation time; Operating condition; Optimum conditions; Optimum operating conditions; Photocatalytic process; Photocatalytic reactions; Pseudo-first order kinetics; Antibiotics; Degradation; Irradiation; Photocatalysis; Rate constants; Solutions; Zinc; Zinc oxide; pH effects; antibiotics; aqueous solution; catalysis; chemical oxygen demand; degradation; dissolved organic carbon; irradiation; zinc
Subjects:T Technology > TA Engineering (General). Civil engineering (General)
Departments / MOR / COE:Departments > Civil Engineering
ID Code:34
Deposited By: Prof Malay Chaudhuri
Deposited On:17 Feb 2010 09:31
Last Modified:19 Jan 2017 08:24

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