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Cost–effective microwave rapid synthesis of zeolite NaA for removal of methylene blue

In this study, microwave rapid synthesized NaA (NaAmw) was used to adsorb a methylene blue (MB) from an aqueous solution. The adsorption was optimized under four independent variables including: pH, adsorbent dosage, initial concentration, and ageing time based on central composite design (CCD) with...

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Main Authors:	Sapawe, N., Abdul Jalil, Aishah, Triwahyono, Sugeng, Shah, M. I. A., Jusoh, R., Salleh, N. F. M., Hameed, B. H., Karim, A. H.
Format:	Article
Published:	2013
Subjects:	TJ Mechanical engineering and machinery
Online Access:	http://eprints.utm.my/id/eprint/40425/ https://doi.org/10.1016/j.cej.2013.06.005
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spelling	my.utm.404252019-03-05T02:54:24Z http://eprints.utm.my/id/eprint/40425/ Cost–effective microwave rapid synthesis of zeolite NaA for removal of methylene blue Sapawe, N. Abdul Jalil, Aishah Triwahyono, Sugeng Shah, M. I. A. Jusoh, R. Salleh, N. F. M. Hameed, B. H. Karim, A. H. TJ Mechanical engineering and machinery In this study, microwave rapid synthesized NaA (NaAmw) was used to adsorb a methylene blue (MB) from an aqueous solution. The adsorption was optimized under four independent variables including: pH, adsorbent dosage, initial concentration, and ageing time based on central composite design (CCD) with response surface methodology (RSM). A period of 15 min was determined to be the optimum microwave ageing time for the synthesis of NaAmw, which is about sixteen times shorter than using conventional heating technique. An amount of 1.0 g L1 NaAmw demonstrated the optimum dosage for adsorption of 120 mg L1 MB, with predicted adsorption uptake of 53.5 mg g�1, at pH 7 within 1 h of contact time at room temperature. This result approximated the laboratory result, which was 50.7 mg g�1. The experimental data obtained with NaAmw best fits the Langmuir isotherm model and exhibited a maximum adsorption capacity (qmax) of 64.8 mg g�1, and the data followed the first-order kinetic equation. The intraparticle diffusion studies revealed that the adsorption rates were not controlled solely by the diffusion step. Thermodynamic studies showed that the adsorption is endothermic, non-spontaneous in nature, and favor at high temperature. These results confirm that the adsorption process of MB onto NaAmw was controlled by both physisorption and chemisorption. The reusability study shows that the NaAmw was still stable after five cycling runs. These results indicate that NaAmw efficiently adsorbed MB, and could be utilized as a cost-effective alternative adsorbent for removing cationic dyes in the treatment of wastewater. 2013 Article PeerReviewed Sapawe, N. and Abdul Jalil, Aishah and Triwahyono, Sugeng and Shah, M. I. A. and Jusoh, R. and Salleh, N. F. M. and Hameed, B. H. and Karim, A. H. (2013) Cost–effective microwave rapid synthesis of zeolite NaA for removal of methylene blue. Chemical Engineering Journal, 229 . pp. 388-398. ISSN 1385-8947 https://doi.org/10.1016/j.cej.2013.06.005 DOI:10.1016/j.cej.2013.06.005
institution	Universiti Teknologi Malaysia
building	UTM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Teknologi Malaysia
content_source	UTM Institutional Repository
url_provider	http://eprints.utm.my/
topic	TJ Mechanical engineering and machinery
spellingShingle	TJ Mechanical engineering and machinery Sapawe, N. Abdul Jalil, Aishah Triwahyono, Sugeng Shah, M. I. A. Jusoh, R. Salleh, N. F. M. Hameed, B. H. Karim, A. H. Cost–effective microwave rapid synthesis of zeolite NaA for removal of methylene blue
description	In this study, microwave rapid synthesized NaA (NaAmw) was used to adsorb a methylene blue (MB) from an aqueous solution. The adsorption was optimized under four independent variables including: pH, adsorbent dosage, initial concentration, and ageing time based on central composite design (CCD) with response surface methodology (RSM). A period of 15 min was determined to be the optimum microwave ageing time for the synthesis of NaAmw, which is about sixteen times shorter than using conventional heating technique. An amount of 1.0 g L1 NaAmw demonstrated the optimum dosage for adsorption of 120 mg L1 MB, with predicted adsorption uptake of 53.5 mg g�1, at pH 7 within 1 h of contact time at room temperature. This result approximated the laboratory result, which was 50.7 mg g�1. The experimental data obtained with NaAmw best fits the Langmuir isotherm model and exhibited a maximum adsorption capacity (qmax) of 64.8 mg g�1, and the data followed the first-order kinetic equation. The intraparticle diffusion studies revealed that the adsorption rates were not controlled solely by the diffusion step. Thermodynamic studies showed that the adsorption is endothermic, non-spontaneous in nature, and favor at high temperature. These results confirm that the adsorption process of MB onto NaAmw was controlled by both physisorption and chemisorption. The reusability study shows that the NaAmw was still stable after five cycling runs. These results indicate that NaAmw efficiently adsorbed MB, and could be utilized as a cost-effective alternative adsorbent for removing cationic dyes in the treatment of wastewater.
format	Article
author	Sapawe, N. Abdul Jalil, Aishah Triwahyono, Sugeng Shah, M. I. A. Jusoh, R. Salleh, N. F. M. Hameed, B. H. Karim, A. H.
author_facet	Sapawe, N. Abdul Jalil, Aishah Triwahyono, Sugeng Shah, M. I. A. Jusoh, R. Salleh, N. F. M. Hameed, B. H. Karim, A. H.
author_sort	Sapawe, N.
title	Cost–effective microwave rapid synthesis of zeolite NaA for removal of methylene blue
title_short	Cost–effective microwave rapid synthesis of zeolite NaA for removal of methylene blue
title_full	Cost–effective microwave rapid synthesis of zeolite NaA for removal of methylene blue
title_fullStr	Cost–effective microwave rapid synthesis of zeolite NaA for removal of methylene blue
title_full_unstemmed	Cost–effective microwave rapid synthesis of zeolite NaA for removal of methylene blue
title_sort	cost–effective microwave rapid synthesis of zeolite naa for removal of methylene blue
publishDate	2013
url	http://eprints.utm.my/id/eprint/40425/ https://doi.org/10.1016/j.cej.2013.06.005
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score	13.211869

Cost–effective microwave rapid synthesis of zeolite NaA for removal of methylene blue

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