Publication Repository

Solar photolysis versus TiO2-mediated solar photocatalysis: a kinetic study of the degradation of naproxen and diclofenac in various water matrices

Show simple item record

dc.contributor Australian Institute Of Marine Science
dc.contributor Chem
dc.contributor Coll Sci & Engn
dc.contributor Dept Chem
dc.contributor Pharm
dc.contributor Biomol Anal Facil
dc.contributor Coll Med & Dent
dc.contributor Univ Malaysia Sarawak
dc.contributor Fac Resource Sci & Technol
dc.contributor James Cook Univ
dc.contributor James Cook University
dc.contributor University Of Malaysia Sarawak
dc.contributor Australian Inst Marine Sci
dc.contributor.author OELGEMOLLER, MICHAEL
dc.contributor.author KANAKARAJU, DEVAGI
dc.contributor.author MOTTI, CHERIE A.
dc.contributor.author GLASS, BEVERLEY D.
dc.date.accessioned 2016-09-21T05:46:27Z
dc.date.accessioned 2016-09-21T05:46:27Z
dc.date.accessioned 2017-03-21T01:03:59Z
dc.date.accessioned 2020-06-30T22:49:54Z
dc.date.available 2017-03-21T01:03:59Z
dc.date.available 2017-03-21T01:03:59Z
dc.date.available 2016-09-21T05:46:27Z
dc.date.available 2020-06-30T22:49:54Z
dc.date.issued 2016-09-01
dc.identifier.citation Kanakaraju D, Motti CA, Glass BD, Oelgemoller M (2016) Solar photolysis versus TiO2-mediated solar photocatalysis: a kinetic study of the degradation of naproxen and diclofenac in various water matrices. Environmental Science and Pollution Research 23(17): 17437-17448 en_US
dc.identifier.issn 0944-1344
dc.identifier.uri http://epubs.aims.gov.au/11068/13024
dc.description.abstract Given that drugs and their degradation products are likely to occur as concoctions in wastewater, the degradation of a mixture of two nonsteroidal anti-inflammatory drugs (NSAIDs), diclofenac (DCF) and naproxen (NPX), was investigated by solar photolysis and titanium dioxide (TiO2)-mediated solar photocatalysis using an immersion-well photoreactor. An equimolar ratio (1:1) of both NSAIDs in distilled water, drinking water, and river water was subjected to solar degradation. Solar photolysis of the DCF and NPX mixture was competitive particularly in drinking water and river water, as both drugs have the ability to undergo photolysis. However, the addition of TiO2 in the mixture significantly enhanced the degradation rate of both APIs compared to solar photolysis alone. Mineralization, as measured by chemical oxygen demand (COD), was incomplete under all conditions investigated. TiO2-mediated solar photocatalytic degradation of DCF and NPX mixtures produced 15 identifiable degradants corresponding to degradation of the individual NSAIDs, while two degradation products with much higher molecular weight than the parent NSAIDs were identified by liquid chromatography mass spectrometry (LC-MS) and Fourier transform-ion cyclotron resonance-mass spectrometry (FT-ICR-MS). This study showed that the solar light intensity and the water matrix appear to be the main factors influencing the overall performance of the solar photolysis and TiO2-mediated solar photocatalysis for degradation of DCF and NPX mixtures.
dc.description.sponsorship The authors thank the James Cook University for their financial support (FAIG award 2009 and GRS awards 2011 and 2012). D.K. also thanks the Malaysian Government for a University Doctorate Training Award. The authors also wish to thank Evonik industries for the donation of Titanium dioxide P25 Aeroxide and S. Boyle (AIMS Analytical Services) for DOC analyses. en_US
dc.description.uri http://link.springer.com/article/10.1007/s11356-016-6906-8 en_US
dc.language English
dc.language.iso en en_US
dc.publisher Springer en_US
dc.relation.ispartof Null
dc.subject Oxidation
dc.subject Waste-water
dc.subject Mass-spectrometry
dc.subject Photodegradation
dc.subject Drinking-water
dc.subject Nonsteroidal Antiinflammatory Drugs
dc.subject Pharmaceutical Products
dc.subject Treatment Plants
dc.subject Environmental Sciences & Ecology
dc.subject Environmental Sciences
dc.subject Environment
dc.subject Tio2 Photocatalysis
dc.subject Pharmaceuticals en_US
dc.subject Sunlight en_US
dc.subject Active Pharmaceutical Ingredients en_US
dc.subject Photolysis en_US
dc.subject Photocatalysis en_US
dc.subject Degradation en_US
dc.title Solar photolysis versus TiO2-mediated solar photocatalysis: a kinetic study of the degradation of naproxen and diclofenac in various water matrices
dc.type journal article en_US
dc.identifier.doi 10.1007/s11356-016-6906-8
dc.identifier.wos WOS:000382674800051


Files in this item

Files Size Format View

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record

Search Publication


Browse

My Account