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Response surface methodology for a green synthesis of zeolite Na-A

The study aims to utilize the "green synthesis" of Na-A zeolites from the waste material, CFA, which is produced from the combustion of coal in coal-fired power plants. Fifteen experimental conditions for the extraction process were obtained using the Box-Behnken Design of the Response Sur...

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Main Authors: Matlob, Abdul Salam, Kamarudin, Rose Aini, Jubri, Zaemah, Ramli, Zainab
Format: Article
Published: EuroJournals Publishing, Inc. 2011
Subjects:
Q Science (General)
Online Access:http://eprints.utm.my/id/eprint/29633/
http://www.scopus.com/record/display.url?eid=2-s2.0-80053257589&origin=resultslist&sort=plf-f&src=s&st1=Response+Surface+Methodology+for+a+green+synthesis+of+zeolite+Na-A&sid=2D01AA8998A37CE27809AE3CCD26EF97.ZmAySxCHIBxxTXbnsoe5w%3a60&sot=b&sdt=b&sl=81&s=
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spelling my.utm.296332019-04-25T01:18:15Z http://eprints.utm.my/id/eprint/29633/ Response surface methodology for a green synthesis of zeolite Na-A Matlob, Abdul Salam Kamarudin, Rose Aini Jubri, Zaemah Ramli, Zainab Q Science (General) The study aims to utilize the "green synthesis" of Na-A zeolites from the waste material, CFA, which is produced from the combustion of coal in coal-fired power plants. Fifteen experimental conditions for the extraction process were obtained using the Box-Behnken Design of the Response Surface Methodology (RSM) by manipulating the concentration of NaOH at 2, 4 and 6 M; controlling the percent power level of microwave irradiation at 10, 50 and 100 and exposure time 1, 3.5 and 6 minutes. Contour plots of Si and Al ions concentrations showed that increasing the three variables led to an increase in the concentration of Si and Al ions in the extracts. Upon hydrothermal treatment at 95oC after 72 hours on the extracts, gibbsite, Na-A zeolite and sodalite octahydrate were produced which were characterized by their XRD images. Na-A zeolite would crystallize when the Si ion concentration in the extract is higher than 2000 ppm and the base used in the extraction not more than 4M. The optimum conditions of the three variables for maximum extraction of Si and Al from CFA to meet the synthesis of zeoliteNa-A were: 5M NaOH concentration, 1.3 min time of exposure to microwave irradiation and 100% microwave power level. EuroJournals Publishing, Inc. 2011-09 Article PeerReviewed Matlob, Abdul Salam and Kamarudin, Rose Aini and Jubri, Zaemah and Ramli, Zainab (2011) Response surface methodology for a green synthesis of zeolite Na-A. European Journal of Scientific Research, 60 (4). pp. 558-568. ISSN 1450-216X http://www.scopus.com/record/display.url?eid=2-s2.0-80053257589&origin=resultslist&sort=plf-f&src=s&st1=Response+Surface+Methodology+for+a+green+synthesis+of+zeolite+Na-A&sid=2D01AA8998A37CE27809AE3CCD26EF97.ZmAySxCHIBxxTXbnsoe5w%3a60&sot=b&sdt=b&sl=81&s=
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 Q Science (General)
spellingShingle Q Science (General)
Matlob, Abdul Salam
Kamarudin, Rose Aini
Jubri, Zaemah
Ramli, Zainab
Response surface methodology for a green synthesis of zeolite Na-A
description The study aims to utilize the "green synthesis" of Na-A zeolites from the waste material, CFA, which is produced from the combustion of coal in coal-fired power plants. Fifteen experimental conditions for the extraction process were obtained using the Box-Behnken Design of the Response Surface Methodology (RSM) by manipulating the concentration of NaOH at 2, 4 and 6 M; controlling the percent power level of microwave irradiation at 10, 50 and 100 and exposure time 1, 3.5 and 6 minutes. Contour plots of Si and Al ions concentrations showed that increasing the three variables led to an increase in the concentration of Si and Al ions in the extracts. Upon hydrothermal treatment at 95oC after 72 hours on the extracts, gibbsite, Na-A zeolite and sodalite octahydrate were produced which were characterized by their XRD images. Na-A zeolite would crystallize when the Si ion concentration in the extract is higher than 2000 ppm and the base used in the extraction not more than 4M. The optimum conditions of the three variables for maximum extraction of Si and Al from CFA to meet the synthesis of zeoliteNa-A were: 5M NaOH concentration, 1.3 min time of exposure to microwave irradiation and 100% microwave power level.
format Article
author Matlob, Abdul Salam
Kamarudin, Rose Aini
Jubri, Zaemah
Ramli, Zainab
author_facet Matlob, Abdul Salam
Kamarudin, Rose Aini
Jubri, Zaemah
Ramli, Zainab
author_sort Matlob, Abdul Salam
title Response surface methodology for a green synthesis of zeolite Na-A
title_short Response surface methodology for a green synthesis of zeolite Na-A
title_full Response surface methodology for a green synthesis of zeolite Na-A
title_fullStr Response surface methodology for a green synthesis of zeolite Na-A
title_full_unstemmed Response surface methodology for a green synthesis of zeolite Na-A
title_sort response surface methodology for a green synthesis of zeolite na-a
publisher EuroJournals Publishing, Inc.
publishDate 2011
url http://eprints.utm.my/id/eprint/29633/
http://www.scopus.com/record/display.url?eid=2-s2.0-80053257589&origin=resultslist&sort=plf-f&src=s&st1=Response+Surface+Methodology+for+a+green+synthesis+of+zeolite+Na-A&sid=2D01AA8998A37CE27809AE3CCD26EF97.ZmAySxCHIBxxTXbnsoe5w%3a60&sot=b&sdt=b&sl=81&s=
_version_ 1643648341237563392
score 13.211869

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