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Decolourization of an azo dye in aqueous solution by ozonation in a semi-batch bubble column reactor

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Main Authors: Che Zulzikrami Azner, Abidin, Muhammad Ridwan, Fahmi, Ong, Soon-An, Siti Nurfatin Nadhirah, Mohd Makhtar, Nazzery Rosmady, Rahmat
Other Authors: zulzikrami@unimap.edu.my
Format: Article
Language:English
Published: Science Society of Thailand under Royal Patronage 2016
Subjects:
Chemical oxygen demand (COD)
Decolourization kinetics
Total organic carbon (TOC)
Online Access:http://dspace.unimap.edu.my:80/xmlui/handle/123456789/41106
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spelling my.unimap-411062016-03-09T01:29:21Z Decolourization of an azo dye in aqueous solution by ozonation in a semi-batch bubble column reactor Che Zulzikrami Azner, Abidin Muhammad Ridwan, Fahmi Ong, Soon-An Siti Nurfatin Nadhirah, Mohd Makhtar Nazzery Rosmady, Rahmat zulzikrami@unimap.edu.my Chemical oxygen demand (COD) Decolourization kinetics Total organic carbon (TOC) Link to publisher's homepage at http://www.scienceasia.org The oxidative degradation of the azo dye Reactive Red 120 by ozonation was investigated. The decolourization was carried out by bubbling ozone at the bottom of a bubble column reactor containing the dye solution. The colour, chemical oxygen demand, and total organic carbon removal were evaluated, and the contaminants were characterized based on the changes in UV-Vis and FT-IR spectra. It was observed that changes of UV-Vis spectra represent the disappearance of both azo and aromatic groups, which causes the colour removal. FT-IR analysis indicated that ozonation shifts the functional groups in the azo dye which results in decolourization, a decrease in aromaticity, and an increase in acidity. The results indicate that the chromophore is destroyed and partially mineralized to small fragments during ozonation. The alkaline pH was favourable to decomposition by ozonation, initiated by the formation of the hydroxyl radicals. The oxidation followed first-order kinetics and the completed decolourization confirmed the capability of ozonation to cleave the azo bond from the dye 2016-03-09T01:26:56Z 2016-03-09T01:26:56Z 2015-02 Article ScienceAsia, vol. 41 (1), 2015, pages 49-54 1513-1874 http://www.scienceasia.org http://dspace.unimap.edu.my:80/xmlui/handle/123456789/41106 10.2306/scienceasia1513-1874.2015.41.049 en Science Society of Thailand under Royal Patronage
institution Universiti Malaysia Perlis
building UniMAP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Perlis
content_source UniMAP Library Digital Repository
url_provider http://dspace.unimap.edu.my/
language English
topic Chemical oxygen demand (COD)
Decolourization kinetics
Total organic carbon (TOC)
spellingShingle Chemical oxygen demand (COD)
Decolourization kinetics
Total organic carbon (TOC)
Che Zulzikrami Azner, Abidin
Muhammad Ridwan, Fahmi
Ong, Soon-An
Siti Nurfatin Nadhirah, Mohd Makhtar
Nazzery Rosmady, Rahmat
Decolourization of an azo dye in aqueous solution by ozonation in a semi-batch bubble column reactor
description Link to publisher's homepage at http://www.scienceasia.org
author2 zulzikrami@unimap.edu.my
author_facet zulzikrami@unimap.edu.my
Che Zulzikrami Azner, Abidin
Muhammad Ridwan, Fahmi
Ong, Soon-An
Siti Nurfatin Nadhirah, Mohd Makhtar
Nazzery Rosmady, Rahmat
format Article
author Che Zulzikrami Azner, Abidin
Muhammad Ridwan, Fahmi
Ong, Soon-An
Siti Nurfatin Nadhirah, Mohd Makhtar
Nazzery Rosmady, Rahmat
author_sort Che Zulzikrami Azner, Abidin
title Decolourization of an azo dye in aqueous solution by ozonation in a semi-batch bubble column reactor
title_short Decolourization of an azo dye in aqueous solution by ozonation in a semi-batch bubble column reactor
title_full Decolourization of an azo dye in aqueous solution by ozonation in a semi-batch bubble column reactor
title_fullStr Decolourization of an azo dye in aqueous solution by ozonation in a semi-batch bubble column reactor
title_full_unstemmed Decolourization of an azo dye in aqueous solution by ozonation in a semi-batch bubble column reactor
title_sort decolourization of an azo dye in aqueous solution by ozonation in a semi-batch bubble column reactor
publisher Science Society of Thailand under Royal Patronage
publishDate 2016
url http://dspace.unimap.edu.my:80/xmlui/handle/123456789/41106
_version_ 1643799576985993216
score 13.214268

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