The development and assessment of organobentonite composite materials for use in the removal of organochlorine pesticides in water

This work describes the modification of bentonite to organobentonites in order to change its property from hydrophilic to organophilic to enhance its capability in adsorbing organochlorine pesticides from water. Bentonite was modified by adding quarternary ammonium cations through an ion exchange te...

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Main Author:	Kiew, Siaw Juie
Format:	Thesis
Language:	English
Published:	2005
Subjects:	Unspecified
Online Access:	http://eprints.utm.my/id/eprint/35004/1/KiewSiawJuieMFS2005.pdf
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id	my-utm-ep.35004
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spelling	my-utm-ep.350042017-10-11T06:06:56Z The development and assessment of organobentonite composite materials for use in the removal of organochlorine pesticides in water 2005 Kiew, Siaw Juie Unspecified This work describes the modification of bentonite to organobentonites in order to change its property from hydrophilic to organophilic to enhance its capability in adsorbing organochlorine pesticides from water. Bentonite was modified by adding quarternary ammonium cations through an ion exchange technique. The organochlorine pesticides studied were heptachlor, aldrin, dieldrin, DDT and mirex. The modified bentonites were characterized using Fourier transform infrared (FTIR), X-ray diffraction (XRD), carbon, and hydrogen and nitrogen analyzer (CHN). Gas chromatography-mass selective detector (GC-MSD) was used to determine the concentration of organochlorine pesticides while evaluating the efficiencies of organobentonites in removing the pesticides from water. Bentonite modified with dodecyltrimethylammonium (DDTMA) has the highest capacity in removing pesticides. DDTMA-bentonite with the lowest amount of quarternary ammonium cations (0.710%) was capable of removing very high percentage of pesticides (95.96±2.50% of aldrin) after 30 minutes of water treatment duration. The optimized treatment conditions of 30 minutes of treatment duration, 0.2000 g of DDTMA-bentonite and 50 rpm of shaking speed were applied throughout this work on the samples obtained from the locations suspected of containing organochlorine pesticides 2005 Thesis http://eprints.utm.my/id/eprint/35004/ http://eprints.utm.my/id/eprint/35004/1/KiewSiawJuieMFS2005.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:94419?queryType=vitalDismax&query=The+development+and+assessment+of+organobentonite+composite+&public=true masters Universiti Teknologi Malaysia, Faculty of Science Faculty of Science
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	Unspecified
spellingShingle	Unspecified Kiew, Siaw Juie The development and assessment of organobentonite composite materials for use in the removal of organochlorine pesticides in water
description	This work describes the modification of bentonite to organobentonites in order to change its property from hydrophilic to organophilic to enhance its capability in adsorbing organochlorine pesticides from water. Bentonite was modified by adding quarternary ammonium cations through an ion exchange technique. The organochlorine pesticides studied were heptachlor, aldrin, dieldrin, DDT and mirex. The modified bentonites were characterized using Fourier transform infrared (FTIR), X-ray diffraction (XRD), carbon, and hydrogen and nitrogen analyzer (CHN). Gas chromatography-mass selective detector (GC-MSD) was used to determine the concentration of organochlorine pesticides while evaluating the efficiencies of organobentonites in removing the pesticides from water. Bentonite modified with dodecyltrimethylammonium (DDTMA) has the highest capacity in removing pesticides. DDTMA-bentonite with the lowest amount of quarternary ammonium cations (0.710%) was capable of removing very high percentage of pesticides (95.96±2.50% of aldrin) after 30 minutes of water treatment duration. The optimized treatment conditions of 30 minutes of treatment duration, 0.2000 g of DDTMA-bentonite and 50 rpm of shaking speed were applied throughout this work on the samples obtained from the locations suspected of containing organochlorine pesticides
format	Thesis
qualification_level	Master's degree
author	Kiew, Siaw Juie
author_facet	Kiew, Siaw Juie
author_sort	Kiew, Siaw Juie
title	The development and assessment of organobentonite composite materials for use in the removal of organochlorine pesticides in water
title_short	The development and assessment of organobentonite composite materials for use in the removal of organochlorine pesticides in water
title_full	The development and assessment of organobentonite composite materials for use in the removal of organochlorine pesticides in water
title_fullStr	The development and assessment of organobentonite composite materials for use in the removal of organochlorine pesticides in water
title_full_unstemmed	The development and assessment of organobentonite composite materials for use in the removal of organochlorine pesticides in water
title_sort	development and assessment of organobentonite composite materials for use in the removal of organochlorine pesticides in water
granting_institution	Universiti Teknologi Malaysia, Faculty of Science
granting_department	Faculty of Science
publishDate	2005
url	http://eprints.utm.my/id/eprint/35004/1/KiewSiawJuieMFS2005.pdf
_version_	1747816307963723776

The development and assessment of organobentonite composite materials for use in the removal of organochlorine pesticides in water

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