The influence of solution matrix on the photocatalytic removal of color from natural waters

Bekbölet, Miray; Boyacioglu, Z.; Özkaraova, Burcu

doi:10.1016/s0273-1223(98)00577-0

Cited by 42 publications

(1 citation statement)

References 7 publications

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“…The induced outcome could be observed as inhibiting or enhancing factors [39]. Influence of sulfate and chloride ions on photocatalytic mineralization of humic acids have been studied by Bekbolet and co-workers revealing that the presence of both anions caused a significant reduction on degradation rate of humic acid [40].…”

Section: Kinetic Considerationsmentioning

confidence: 99%

Photocatalytic Removal of Microbiological Consortium and Organic Matter in Greywater

Uyguner-Demirel

Bekbölet

2016

Catalysts

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This study aimed to investigate TiO 2 photocatalytic degradation of synthetically-prepared greywater samples with differing compositional contents of organic matter (OM), anion concentration, and microbiological consortium. Treatment efficiency was followed through removal of organic matter content in terms of dissolved organic carbon (DOC), specific spectroscopic parameters, and bacterial inactivation. Photocatalytic degradation kinetics were expressed by pseudo first-order kinetic modeling. The best DOC removal rates were attained for greywater samples containing OM with lower molecular size fractions. In addition, either enhancing or reducing the effect of common anions as radical scavengers were observed depending on the composition and concentration of variables in the greywater matrix. Moreover, possibility of a photocatalytic disinfection process was found to be of a bacteria type specific in OM-loaded synthetic greywater samples. Photocatalytic destruction of fecal streptococci required longer irradiation periods under all conditions. Bacterial removal rates were found to be in the order of total coliform > fecal coliform > fecal streptococci, for low organic load greywater, and fecal coliform > total coliform > fecal streptococci, for high organic load greywater.

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Section: Kinetic Considerationsmentioning

confidence: 99%

Photocatalytic Removal of Microbiological Consortium and Organic Matter in Greywater

Uyguner-Demirel

Bekbölet

2016

Catalysts

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Nanosized Photocatalysts in Environmental Remediation

Wilcoxon

Abrams

2010

Nanotechnology

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We review the science and technology underlying the synthesis of nanosized photocatalysts and their application in environmental remediation. Certain types of semiconductor nanoparticles in both dispersed and supported form can oxidize toxic organic chemicals in liquid, gas and solid phases. This mineralization process can be driven by light and an optimized process can function under ambient conditions of temperature and pressure, producing CO 2 and dilute mineral acids. Such photocatalysis is a potentially inexpensive alternative to other methods for destroying both chemical and biological toxins in the environment. Our review includes discussion of several nanosized photocatalysts with an emphasis on the metal oxide TiO 2 and metal sulfides, especially MoS 2 . We discuss their characterization and the factors which influence their photocatalytic activity and selectivity. Issues such as control of size, quantum confinement, surface chemistry and carrier recombination rate play an important role in the functioning of these photocatalysts. Finally, we summarize some recent applications of TiO 2 films in environmental remediation technology which are just being commercialized. We also discuss future research needs in this area required for an economically viable technology.

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Photocatalysis of Natural Organic Matter in Water: Characterization and Treatment Integration

Liu

Lim

Amal

2013

Photocatalysis and Water Purification

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The influence of solution matrix on the photocatalytic removal of color from natural waters

Cited by 42 publications

References 7 publications

Photocatalytic Removal of Microbiological Consortium and Organic Matter in Greywater

Photocatalytic Removal of Microbiological Consortium and Organic Matter in Greywater

Nanosized Photocatalysts in Environmental Remediation

Photocatalysis of Natural Organic Matter in Water: Characterization and Treatment Integration

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