Show simple item record

dc.contributor.authorAbeish, Abdul Basit Mohamad S
dc.contributor.authorAng, Ming
dc.contributor.authorZnad, Hussein
dc.date.accessioned2017-01-30T14:43:33Z
dc.date.available2017-01-30T14:43:33Z
dc.date.created2015-01-07T20:00:28Z
dc.date.issued2015
dc.identifier.citationAbeish, A. and Ang, H. and Znad, H. 2015. Solar photocatalytic degradation of chlorophenols mixture (4-CP and 2,4-DCP): Mechanism and kinetic modelling. Journal of Environmental Science and Health, Part A. 50: pp. 125-134.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/40513
dc.identifier.doi10.1080/10934529.2015.975045
dc.description.abstract

The solar-photocatalytic degradation mechanisms and kinetics of 4-chlorophenol (4-CP) and 2,4-dichlorophenol (2,4-DCP) using TiO2 have been investigated both individually and combined. The individual solar-photocatalytic degradation of both phenolic compounds showed that the reaction rates follow pseudo–first-order reaction. During the individual photocatalytic degradation of both 4-CP and 2,4-DCP under the same condition of TiO2 (0.5 g L¡1) and light intensities (1000 mW cm-2) different intermediates were detected, three compounds associated with 4-CP (hydroquinone (HQ), phenol (Ph) and 4-chlorocatechol (4-cCat)) and two compounds associated with 2,4-DCP (4-CP and Ph). The photocatalytic degradation of the combined mixture (4-CP and 2,4-DCP) was also investigated at the same conditions and different 2,4-DCP initial concentrations. The results showed that the degradation rate of 4-CP decreases when the 2,4-DCP concentration increases. Furthermore, the intermediates detected were similar to that found in the individual degradation but with high Ph concentration. Therefore, a possible reaction mechanism for degradation of this combined mixture was proposed. Moreover, a modified Langmuir–Hinshelwood (L-H) kinetic model considering all detected intermediates was developed. A good agreement between experimental and estimated results was achieved. This model can be useful for scaling-up purposes more accurately as its considering the intermediates formed, which has a significant effect on degrading the main pollutants (4-CP and 2,4-DCP).

dc.publisherTaylor & Francis Group
dc.subject4-DCP
dc.subject2
dc.subjectdegradation
dc.subjectchlorophenols mixture
dc.subjectsolar photocatalytic
dc.subjectmechanism
dc.subject4-CP
dc.subjectkinetic modelling
dc.titleSolar photocatalytic degradation of chlorophenols mixture (4-CP and 2,4-DCP): Mechanism and kinetic modelling
dc.typeJournal Article
dcterms.source.volume50
dcterms.source.startPage125
dcterms.source.endPage134
dcterms.source.issn10934529
dcterms.source.titleJournal of Environmental Science and Health, Part A
curtin.departmentDepartment of Chemical Engineering
curtin.accessStatusFulltext not available


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record