Decolorization of orange II DYE using bacteria immobilized onto multi-walled carbon nanotube cement composite

In this study, decolorization of Orange II dye using Enterococcus faecalis immobilized onto multi-walled carbon nanotube (MWCNT) cement composite was assessed. Multi-walled carbon nanotube (MWCNT) cement composites were made by mixing zeolite (40g), cement (12g), water (8ml) and MWCNT (0.6g) for att...

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Main Author:	Vojdani, Mohammad
Format:	Thesis
Language:	English
Published:	2012
Subjects:	TP Chemical technology
Online Access:	http://eprints.utm.my/id/eprint/42087/1/Mohammad%20VojdaniMFS2012.pdf
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id	my-utm-ep.42087
record_format	uketd_dc
spelling	my-utm-ep.420872017-07-06T03:20:13Z Decolorization of orange II DYE using bacteria immobilized onto multi-walled carbon nanotube cement composite 2012 Vojdani, Mohammad TP Chemical technology In this study, decolorization of Orange II dye using Enterococcus faecalis immobilized onto multi-walled carbon nanotube (MWCNT) cement composite was assessed. Multi-walled carbon nanotube (MWCNT) cement composites were made by mixing zeolite (40g), cement (12g), water (8ml) and MWCNT (0.6g) for attachment of biofilm. Biofilm was allowed to develop on the biocomposites for 7 days. The efficiency of decolorization of orange II dye was examined in the presence and absence of biofilm. By comparing the system with and without biofilm, the system without biofilm (using free suspended cells) achieved the highest percentage removal of orange II dye (97.69%). Unexpectedly the lowest percentage of dye decolorization was achieved for the system using cells immobilized onto Hardened Cement Paste + MWCNT (72.74%). This was most likely due to the cytotoxic effect of MWCNT on the bacterial cells. As expected maximum decolorization for all the systems occurred in anaerobic condition and after entering the aerobic condition decolorization had reached a steady state because of the competition between oxygen and dye. 2012 Thesis http://eprints.utm.my/id/eprint/42087/ http://eprints.utm.my/id/eprint/42087/1/Mohammad%20VojdaniMFS2012.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:77719?queryType=vitalDismax&query=Decolorization+of+orange+II+DYE+using+bacteria+immobilized+onto+multi-walled+carbon+nanotube+cement+composite&public=true masters Universiti Teknologi Malaysia, Faculty of Science Faculty of Science
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TP Chemical technology
spellingShingle	TP Chemical technology Vojdani, Mohammad Decolorization of orange II DYE using bacteria immobilized onto multi-walled carbon nanotube cement composite
description	In this study, decolorization of Orange II dye using Enterococcus faecalis immobilized onto multi-walled carbon nanotube (MWCNT) cement composite was assessed. Multi-walled carbon nanotube (MWCNT) cement composites were made by mixing zeolite (40g), cement (12g), water (8ml) and MWCNT (0.6g) for attachment of biofilm. Biofilm was allowed to develop on the biocomposites for 7 days. The efficiency of decolorization of orange II dye was examined in the presence and absence of biofilm. By comparing the system with and without biofilm, the system without biofilm (using free suspended cells) achieved the highest percentage removal of orange II dye (97.69%). Unexpectedly the lowest percentage of dye decolorization was achieved for the system using cells immobilized onto Hardened Cement Paste + MWCNT (72.74%). This was most likely due to the cytotoxic effect of MWCNT on the bacterial cells. As expected maximum decolorization for all the systems occurred in anaerobic condition and after entering the aerobic condition decolorization had reached a steady state because of the competition between oxygen and dye.
format	Thesis
qualification_level	Master's degree
author	Vojdani, Mohammad
author_facet	Vojdani, Mohammad
author_sort	Vojdani, Mohammad
title	Decolorization of orange II DYE using bacteria immobilized onto multi-walled carbon nanotube cement composite
title_short	Decolorization of orange II DYE using bacteria immobilized onto multi-walled carbon nanotube cement composite
title_full	Decolorization of orange II DYE using bacteria immobilized onto multi-walled carbon nanotube cement composite
title_fullStr	Decolorization of orange II DYE using bacteria immobilized onto multi-walled carbon nanotube cement composite
title_full_unstemmed	Decolorization of orange II DYE using bacteria immobilized onto multi-walled carbon nanotube cement composite
title_sort	decolorization of orange ii dye using bacteria immobilized onto multi-walled carbon nanotube cement composite
granting_institution	Universiti Teknologi Malaysia, Faculty of Science
granting_department	Faculty of Science
publishDate	2012
url	http://eprints.utm.my/id/eprint/42087/1/Mohammad%20VojdaniMFS2012.pdf
_version_	1747816686815281152

Decolorization of orange II DYE using bacteria immobilized onto multi-walled carbon nanotube cement composite

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