Photodegradation of dye in the presence of metal ions using composite as catalyst

A. Ochieng; Kwena Pete

doi:10.1109/ICCMREA.2014.6843791

Photodegradation of dye in the presence of metal ions using composite as catalyst

A. Ochieng, Kwena Pete

Chemical, Materials & Metallurgical Engineering

Research output: Contribution to conference › Paper › peer-review

Abstract

Advanced oxidation processes such as photocatalysis have been shown to be very robust in the removal of biorecalcitrant compounds. In this work, photocatalytic degradation of synthetic textile wastewater (methyl orange dye) in the presence of Cr(VI) was carried out using TiO₂ supported onto silica. A composite of TiO₂ and silica was prepared, analyzed and applied in a batch photoreactor. The composite photocatalyst was characterized by Scanning Electron Microscopy and Energy Dispersive Spectroscopy (SEM-EDS) and Raman spectroscopy (RS). Operating parameters such as composite photocatalyst loading, initial dye concentration and pH were determined. The performance of the photocatalyst reactor was evaluated on the basis of color removal and metal ion reduction. The reduction of Cr(VI) to Cr(III) was improved in the presence of the dye. The results revealed the potential of the composite photocatalyst to treat mixed wastewater containing heavy metals like Cr(VI).

Original language	English
Pages	1-5
Number of pages	5
DOIs	https://doi.org/10.1109/ICCMREA.2014.6843791
Publication status	Published - 2014
Event	2014 International Conference on Composite Materials & Renewable Energy Applications - Sousse, Tunisia Duration: Jun 22 2014 → Jun 24 2014 https://ieeexplore.ieee.org/xpl/mostRecentIssue.jsp?punumber=6828542

Conference

Conference	2014 International Conference on Composite Materials & Renewable Energy Applications
Abbreviated title	ICCMREA
Country	Tunisia
City	Sousse
Period	6/22/14 → 6/24/14
Internet address	https://ieeexplore.ieee.org/xpl/mostRecentIssue.jsp?punumber=6828542

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title = "Photodegradation of dye in the presence of metal ions using composite as catalyst",

abstract = "Advanced oxidation processes such as photocatalysis have been shown to be very robust in the removal of biorecalcitrant compounds. In this work, photocatalytic degradation of synthetic textile wastewater (methyl orange dye) in the presence of Cr(VI) was carried out using TiO2 supported onto silica. A composite of TiO2 and silica was prepared, analyzed and applied in a batch photoreactor. The composite photocatalyst was characterized by Scanning Electron Microscopy and Energy Dispersive Spectroscopy (SEM-EDS) and Raman spectroscopy (RS). Operating parameters such as composite photocatalyst loading, initial dye concentration and pH were determined. The performance of the photocatalyst reactor was evaluated on the basis of color removal and metal ion reduction. The reduction of Cr(VI) to Cr(III) was improved in the presence of the dye. The results revealed the potential of the composite photocatalyst to treat mixed wastewater containing heavy metals like Cr(VI).",

author = "A. Ochieng and Kwena Pete",

year = "2014",

doi = "10.1109/ICCMREA.2014.6843791",

language = "English",

pages = "1--5",

note = "2014 International Conference on Composite Materials & Renewable Energy Applications , ICCMREA ; Conference date: 22-06-2014 Through 24-06-2014",

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TY - CONF

T1 - Photodegradation of dye in the presence of metal ions using composite as catalyst

AU - Ochieng, A.

AU - Pete, Kwena

PY - 2014

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N2 - Advanced oxidation processes such as photocatalysis have been shown to be very robust in the removal of biorecalcitrant compounds. In this work, photocatalytic degradation of synthetic textile wastewater (methyl orange dye) in the presence of Cr(VI) was carried out using TiO2 supported onto silica. A composite of TiO2 and silica was prepared, analyzed and applied in a batch photoreactor. The composite photocatalyst was characterized by Scanning Electron Microscopy and Energy Dispersive Spectroscopy (SEM-EDS) and Raman spectroscopy (RS). Operating parameters such as composite photocatalyst loading, initial dye concentration and pH were determined. The performance of the photocatalyst reactor was evaluated on the basis of color removal and metal ion reduction. The reduction of Cr(VI) to Cr(III) was improved in the presence of the dye. The results revealed the potential of the composite photocatalyst to treat mixed wastewater containing heavy metals like Cr(VI).

AB - Advanced oxidation processes such as photocatalysis have been shown to be very robust in the removal of biorecalcitrant compounds. In this work, photocatalytic degradation of synthetic textile wastewater (methyl orange dye) in the presence of Cr(VI) was carried out using TiO2 supported onto silica. A composite of TiO2 and silica was prepared, analyzed and applied in a batch photoreactor. The composite photocatalyst was characterized by Scanning Electron Microscopy and Energy Dispersive Spectroscopy (SEM-EDS) and Raman spectroscopy (RS). Operating parameters such as composite photocatalyst loading, initial dye concentration and pH were determined. The performance of the photocatalyst reactor was evaluated on the basis of color removal and metal ion reduction. The reduction of Cr(VI) to Cr(III) was improved in the presence of the dye. The results revealed the potential of the composite photocatalyst to treat mixed wastewater containing heavy metals like Cr(VI).

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DO - 10.1109/ICCMREA.2014.6843791

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T2 - 2014 International Conference on Composite Materials & Renewable Energy Applications

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