Methylene blue adsorption onto crosslinked sago starch

Crosslinked sago starch was prepared by crosslinking native sago starch with sodium trimetaphosphate (CSS-STMP) and epichlorohydrin (CSS-EPCH) as renewable adsorbents. CSS-STMP and CCS-EPCH were used to remove methylene blue (MB) from aqueous solution based on its characterization tests. The adsorpt...

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Main Author:	Muhmed, Siti Aishah
Format:	Thesis
Language:	English
Published:	2016
Subjects:	TP Chemical technology
Online Access:	http://eprints.utm.my/id/eprint/60710/1/SitiAishahMuhmedMFChE2016.pdf
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spelling	my-utm-ep.607102021-01-03T01:26:01Z Methylene blue adsorption onto crosslinked sago starch 2016-02 Muhmed, Siti Aishah TP Chemical technology Crosslinked sago starch was prepared by crosslinking native sago starch with sodium trimetaphosphate (CSS-STMP) and epichlorohydrin (CSS-EPCH) as renewable adsorbents. CSS-STMP and CCS-EPCH were used to remove methylene blue (MB) from aqueous solution based on its characterization tests. The adsorption capacity of CSS-STMP and CSS-EPCH were evaluated as a function of pH, adsorbent dosage, initial MB concentration, contact time and temperature. It was favorable for adsorption under condition of pH 7 and at 50 ppm for both adsorbent. The adsorption capacity trend was reduced with increasing adsorbent dosage where 0.05 g dose of adsorbent was chosen. Equilibrium adsorption capacity (qe) of MB adsorption onto CSS-STMP and CSS-EPCH were 2.224 mg g-1 and 1.303 mg g-1, respectively. CSS-STMP adsorbent was employed for further experiment due to its better performance than CSS-EPCH. The equilibrium isotherms were conducted using Langmuir, Freundlich and Tempkin models. It has been demonstrated that a better agreement was Langmuir isotherm with a correlation coefficient (R2) of 0.990, complete monolayer adsorption capacity (qm) of 3.731 mg g-1, chi-square test (2) of 0.029% and corresponding contact time of 4 hours. The pseudo-first-order, pseudosecond- order and intra-particle diffusion were used to fit adsorption data in the kinetic studies. The results show that the adsorption kinetic was more accurately described by the pseudo-second-order model with the mechanism via film diffusion where R2 is 0.999 and variance is 0.152%. The adsorption of MB on CSS-STMP was exothermic and non-spontaneous in nature at temperature of 303K. Regeneration study also indicated that CSS-STMP adsorbent have the potential to be reused at the same adsorption performance for numbers of cycle. The obtained results suggest that CSS-STMP could be a promising candidate as an adsorbent for MB removal. 2016-02 Thesis http://eprints.utm.my/id/eprint/60710/ http://eprints.utm.my/id/eprint/60710/1/SitiAishahMuhmedMFChE2016.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:93937 masters Universiti Teknologi Malaysia, Faculty of Chemical Engineering Faculty of Chemical Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TP Chemical technology
spellingShingle	TP Chemical technology Muhmed, Siti Aishah Methylene blue adsorption onto crosslinked sago starch
description	Crosslinked sago starch was prepared by crosslinking native sago starch with sodium trimetaphosphate (CSS-STMP) and epichlorohydrin (CSS-EPCH) as renewable adsorbents. CSS-STMP and CCS-EPCH were used to remove methylene blue (MB) from aqueous solution based on its characterization tests. The adsorption capacity of CSS-STMP and CSS-EPCH were evaluated as a function of pH, adsorbent dosage, initial MB concentration, contact time and temperature. It was favorable for adsorption under condition of pH 7 and at 50 ppm for both adsorbent. The adsorption capacity trend was reduced with increasing adsorbent dosage where 0.05 g dose of adsorbent was chosen. Equilibrium adsorption capacity (qe) of MB adsorption onto CSS-STMP and CSS-EPCH were 2.224 mg g-1 and 1.303 mg g-1, respectively. CSS-STMP adsorbent was employed for further experiment due to its better performance than CSS-EPCH. The equilibrium isotherms were conducted using Langmuir, Freundlich and Tempkin models. It has been demonstrated that a better agreement was Langmuir isotherm with a correlation coefficient (R2) of 0.990, complete monolayer adsorption capacity (qm) of 3.731 mg g-1, chi-square test (2) of 0.029% and corresponding contact time of 4 hours. The pseudo-first-order, pseudosecond- order and intra-particle diffusion were used to fit adsorption data in the kinetic studies. The results show that the adsorption kinetic was more accurately described by the pseudo-second-order model with the mechanism via film diffusion where R2 is 0.999 and variance is 0.152%. The adsorption of MB on CSS-STMP was exothermic and non-spontaneous in nature at temperature of 303K. Regeneration study also indicated that CSS-STMP adsorbent have the potential to be reused at the same adsorption performance for numbers of cycle. The obtained results suggest that CSS-STMP could be a promising candidate as an adsorbent for MB removal.
format	Thesis
qualification_level	Master's degree
author	Muhmed, Siti Aishah
author_facet	Muhmed, Siti Aishah
author_sort	Muhmed, Siti Aishah
title	Methylene blue adsorption onto crosslinked sago starch
title_short	Methylene blue adsorption onto crosslinked sago starch
title_full	Methylene blue adsorption onto crosslinked sago starch
title_fullStr	Methylene blue adsorption onto crosslinked sago starch
title_full_unstemmed	Methylene blue adsorption onto crosslinked sago starch
title_sort	methylene blue adsorption onto crosslinked sago starch
granting_institution	Universiti Teknologi Malaysia, Faculty of Chemical Engineering
granting_department	Faculty of Chemical Engineering
publishDate	2016
url	http://eprints.utm.my/id/eprint/60710/1/SitiAishahMuhmedMFChE2016.pdf
_version_	1747817764822712320

Methylene blue adsorption onto crosslinked sago starch

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