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Phytoremediation of monoazo and diazo dyes in wastewater using up-fow constructed wetland

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Bibliographic Details
Main Author: Chen, Siaw Fun
Other Authors: Dr. Ong Soon An
Format: Learning Object
Language:English
Published: Universiti Malaysia Perlis (UniMAP) 2012
Subjects:
Constructed wetland system
Textile wastewater
Dyes - Monoaza
Dyes - Diazo
Phytoremediation
Wastewater treatment
Anaerobic
Aerobic
Online Access:http://dspace.unimap.edu.my/xmlui/handle/123456789/19584
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spelling my.unimap-195842012-06-02T03:06:44Z Phytoremediation of monoazo and diazo dyes in wastewater using up-fow constructed wetland Chen, Siaw Fun Dr. Ong Soon An Constructed wetland system Textile wastewater Dyes - Monoaza Dyes - Diazo Phytoremediation Wastewater treatment Anaerobic Aerobic Access is limited to UniMAP community. Application of a sequential anaerobic and aerobic in a constructed wetland system can enhance the treatment performance of textile wastewater to efficiently remove color, organic compounds, and intermediate aromatic amines. Four laboratory-scale up-flow constructed wetland (UFCW) reactors planted with Phragmites australis were constructed to investigate the treatment performance between aerated and non-aerated reactors to treat methyl orange (MO) and reactive black 5 (RB5) containing synthetic wastewater. The treatment performances of UFCW reactors were greatly improved for 2 days hydraulic retention time (HRT) compared to 1 day HRT. The non-aerated reactors which demonstrated an almost entire anaerobic environment as evidenced by oxidation-reduction potential (ORP) profile yielded a better dyes removal efficiency with 93.12% (MO) and 89.49% (RB5) compared to the aerated reactor with only 75.48% (MO) and 81.29% (RB5) when the influent dyes concentration was 50 mg/L. Decolorization efficiency of monoazo dye MO was higher than diazo dye RB5. On the other hand, supplementary aeration created an almost wholly aerobic or anoxic environment in the aerated reactors proved that higher reduction on COD (~90%) was likely to achieve under aerobic condition than anaerobic condition with COD removal of only about ~85%. Other than COD reduction, the amounts of aromatic amines were also significantly reduced in the aerated reactors. As a result, a proper design ratio of anaerobic/aerobic region in UFCW is a key to accomplish not only color reduction but also COD and aromatic amines in textile wastewater treatment. 2012-06-02T03:06:44Z 2012-06-02T03:06:44Z 2011-04 Learning Object http://hdl.handle.net/123456789/19584 en Universiti Malaysia Perlis (UniMAP) School of Environmental Engineering
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 Constructed wetland system
Textile wastewater
Dyes - Monoaza
Dyes - Diazo
Phytoremediation
Wastewater treatment
Anaerobic
Aerobic
spellingShingle Constructed wetland system
Textile wastewater
Dyes - Monoaza
Dyes - Diazo
Phytoremediation
Wastewater treatment
Anaerobic
Aerobic
Chen, Siaw Fun
Phytoremediation of monoazo and diazo dyes in wastewater using up-fow constructed wetland
description Access is limited to UniMAP community.
author2 Dr. Ong Soon An
author_facet Dr. Ong Soon An
Chen, Siaw Fun
format Learning Object
author Chen, Siaw Fun
author_sort Chen, Siaw Fun
title Phytoremediation of monoazo and diazo dyes in wastewater using up-fow constructed wetland
title_short Phytoremediation of monoazo and diazo dyes in wastewater using up-fow constructed wetland
title_full Phytoremediation of monoazo and diazo dyes in wastewater using up-fow constructed wetland
title_fullStr Phytoremediation of monoazo and diazo dyes in wastewater using up-fow constructed wetland
title_full_unstemmed Phytoremediation of monoazo and diazo dyes in wastewater using up-fow constructed wetland
title_sort phytoremediation of monoazo and diazo dyes in wastewater using up-fow constructed wetland
publisher Universiti Malaysia Perlis (UniMAP)
publishDate 2012
url http://dspace.unimap.edu.my/xmlui/handle/123456789/19584
_version_ 1643792757104312320
score 13.209306

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