Photochemical and photocatalytic degradation of diclofenac and amoxicillin using natural and simulated sunlight

Kockler, Jutta, Kanakaraju, Devagi, Glass, Beverley, and Oelgemöller, Michael (2012) Photochemical and photocatalytic degradation of diclofenac and amoxicillin using natural and simulated sunlight. Journal of Sustainability Science and Management, 7 (1). pp. 23-29.

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Abstract

Photochemical and titanium dioxide (TiO2) photocatalysed degradations of diclofenac and amoxicillin in water, under natural and simulated sunlight, were investigated. Direct photolysis of diclofenac resulted in about 80% degradation after exposure to an irradiation level of 400 W/m2 for 4 h, while in the presence of TiO2, 96% of diclofenac was degraded after the same time period. At the irradiation level of 765 W/m2, 99% of the drug was degraded within 1 h exposure. The efficiency of degradation of diclofenac was thus proportional to the level of simulated irradiation. The use of floating solar reactors has resulted in comparable rate of photodegradation by direct natural sunlight to that achieved by the solar simulator. In contrast, amoxicillin remained photostable under direct photolysis, while degrading significantly in the presence of TiO2.

Item ID: 21642
Item Type: Article (Refereed Research - C1)
ISSN: 1823-8556
Date Deposited: 14 May 2012 06:24
FoR Codes: 03 CHEMICAL SCIENCES > 0305 Organic Chemistry > 030505 Physical Organic Chemistry @ 100%
SEO Codes: 97 EXPANDING KNOWLEDGE > 970103 Expanding Knowledge in the Chemical Sciences @ 100%
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