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Simultaneous removal of color, organic compounds and nutrients in azo dye-containing wastewater using up-flow constructed wetland

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Main Authors: Ong, Soon An, Katsuhiro, Uchiyama, Daisuke, Inadama, Kazuaki, Yamagiwa
Format: Article
Language:English
Published: Elsevier B.V. 2016
Subjects:
Azo dye
Nutrients
Supplementary aeration
Up-flow constructed wetland
Wastewater treatment
Online Access:http://dspace.unimap.edu.my:80/xmlui/handle/123456789/41880
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spelling my.unimap-418802016-06-04T07:43:41Z Simultaneous removal of color, organic compounds and nutrients in azo dye-containing wastewater using up-flow constructed wetland Ong, Soon An Katsuhiro, Uchiyama Daisuke, Inadama Kazuaki, Yamagiwa Azo dye Nutrients Supplementary aeration Up-flow constructed wetland Wastewater treatment Link to publisher's homepage at http://www.journals.elsevier.com Combination of aerobic and anaerobic processes in constructed wetlands can enhance the treatment performance in textile wastewater. This study assessed the treatment of azo dye Acid Orange 7 (AO7) and nutrients using five laboratory-scale up-flow constructed wetlands (UFCW) with and without supplementary aeration, and with different emergent plants. Supplementary aeration controlled the size of aerobic and anaerobic zones in the UFCW reactors as evidenced by the oxidation-reduction potential (ORP) and dissolved oxygen (DO) profile of the UFCW. The AO7 removal efficiency was above 95% in all UFCW reactors and most of the color was extensively removed in the anaerobic region of the UFCW beds. The intermediates produced through the breakage of azo bond were significantly reduced in the UFCW reactors with supplementary aeration. The results indicated the applicability of the UFCW reactors to the treatment of azo dye-containing wastewater. The removals of T-N and T-P were in the range of 60-67% and 26-37%, respectively, among the UFCW reactors. The COD and NH4-N removals in the aerated reactors were about 86 and 96%, respectively. On the other hand, the COD and NH4-N removals were in the range of 78-82% and 41-48%, respectively, in the non-aerated reactors. The supplementary aeration enhanced the removal efficiencies in organic matter, NH4-N and aromatic amines in the UFCW reactors. 2016-06-04T07:43:41Z 2016-06-04T07:43:41Z 2009-06-15 Article Journal of Hazardous Materials, vol.165 (1-3), 2009, pages 696-703 0304-3894 http://dspace.unimap.edu.my:80/xmlui/handle/123456789/41880 doi:10.1016/j.jhazmat.2008.10.071 en Elsevier B.V.
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 Azo dye
Nutrients
Supplementary aeration
Up-flow constructed wetland
Wastewater treatment
spellingShingle Azo dye
Nutrients
Supplementary aeration
Up-flow constructed wetland
Wastewater treatment
Ong, Soon An
Katsuhiro, Uchiyama
Daisuke, Inadama
Kazuaki, Yamagiwa
Simultaneous removal of color, organic compounds and nutrients in azo dye-containing wastewater using up-flow constructed wetland
description Link to publisher's homepage at http://www.journals.elsevier.com
format Article
author Ong, Soon An
Katsuhiro, Uchiyama
Daisuke, Inadama
Kazuaki, Yamagiwa
author_facet Ong, Soon An
Katsuhiro, Uchiyama
Daisuke, Inadama
Kazuaki, Yamagiwa
author_sort Ong, Soon An
title Simultaneous removal of color, organic compounds and nutrients in azo dye-containing wastewater using up-flow constructed wetland
title_short Simultaneous removal of color, organic compounds and nutrients in azo dye-containing wastewater using up-flow constructed wetland
title_full Simultaneous removal of color, organic compounds and nutrients in azo dye-containing wastewater using up-flow constructed wetland
title_fullStr Simultaneous removal of color, organic compounds and nutrients in azo dye-containing wastewater using up-flow constructed wetland
title_full_unstemmed Simultaneous removal of color, organic compounds and nutrients in azo dye-containing wastewater using up-flow constructed wetland
title_sort simultaneous removal of color, organic compounds and nutrients in azo dye-containing wastewater using up-flow constructed wetland
publisher Elsevier B.V.
publishDate 2016
url http://dspace.unimap.edu.my:80/xmlui/handle/123456789/41880
_version_ 1643799638067642368
score 13.222552

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