Staff View: Tailoring the properties of calcium modified fibrous mesoporous silica KCC-1 for optimized sulfur dioxide removal

Tailoring the properties of calcium modified fibrous mesoporous silica KCC-1 for optimized sulfur dioxide removal

Dry regenerative flue gas desulfurization (FGD) is a promising method to tackle industrial issues regarding SO2 emission into the atmosphere due to its sorbent being highly accessible, the lack of water dependency and reduction in waste management. This study examined the feasibility of using fibrou...

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Main Authors:	Hanif, Muhammad Adli, Ibrahim, Naimah, Md. Isa, Khairuddin, Muhammad Ridwan, Fahmi, Tuan Abdullah, Tuan Amran, Abdul Jalil, Aishah
Format:	Article
Published:	Elsevier Inc. 2022
Subjects:	Q Science (General) TP Chemical technology
Online Access:	http://eprints.utm.my/103299/ http://dx.doi.org/10.1016/j.micromeso.2021.111610
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spelling	my.utm.1032992023-10-31T01:42:32Z http://eprints.utm.my/103299/ Tailoring the properties of calcium modified fibrous mesoporous silica KCC-1 for optimized sulfur dioxide removal Hanif, Muhammad Adli Ibrahim, Naimah Md. Isa, Khairuddin Muhammad Ridwan, Fahmi Tuan Abdullah, Tuan Amran Abdul Jalil, Aishah Q Science (General) TP Chemical technology Dry regenerative flue gas desulfurization (FGD) is a promising method to tackle industrial issues regarding SO2 emission into the atmosphere due to its sorbent being highly accessible, the lack of water dependency and reduction in waste management. This study examined the feasibility of using fibrous mesoporous silica KCC-1 which has been reported to possess better properties than several other predecessor mesoporous silica as alternative sorbents for dry FGD. Calcium metal was introduced to overcome the lack of active sites available on KCC-1 while simultaneously providing sufficient basicity to counter the increase in acidity brought by SO2 adsorption. Three sorbent modification parameters were analyzed: metal loading (5–15 wt %), calcination temperature (823–973 K) and calcination time (5.5–7 h), and the prepared samples were characterized using BET surface area and pore analyzer, FESEM-EDX, XRD and H2-TPR. The breakthrough experiment was conducted using a lab scale fixed bed reactor system with 1500 ppm SO2/N2 at 200 mL/min. SO2 removal was optimized by sorbent prepared with calcium loading of 5 wt %, calcination temperature of 923 K and calcination time of 6.5 h with adsorption capacity of 3241.94 mg SO2/g KCC-1. The optimized sorbent demonstrated highest surface area, good pore development, high dispersion of calcium metal, appropriate impregnation of calcium oxide which caused only minor distortion to the silica framework of KCC-1. Subjecting the optimized sample to five consecutive regeneration cycles by heating at 773 K while simultaneously flowing N2 gas for an hour shows good regeneration performance with a total final reduction of only 25% from the initial adsorption capacity obtained from a fresh sample. Elsevier Inc. 2022-01 Article PeerReviewed Hanif, Muhammad Adli and Ibrahim, Naimah and Md. Isa, Khairuddin and Muhammad Ridwan, Fahmi and Tuan Abdullah, Tuan Amran and Abdul Jalil, Aishah (2022) Tailoring the properties of calcium modified fibrous mesoporous silica KCC-1 for optimized sulfur dioxide removal. Microporous and Mesoporous Materials, 330 (NA). pp. 1-12. ISSN 1387-1811 http://dx.doi.org/10.1016/j.micromeso.2021.111610 DOI:10.1016/j.micromeso.2021.111610
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) TP Chemical technology
spellingShingle	Q Science (General) TP Chemical technology Hanif, Muhammad Adli Ibrahim, Naimah Md. Isa, Khairuddin Muhammad Ridwan, Fahmi Tuan Abdullah, Tuan Amran Abdul Jalil, Aishah Tailoring the properties of calcium modified fibrous mesoporous silica KCC-1 for optimized sulfur dioxide removal
description	Dry regenerative flue gas desulfurization (FGD) is a promising method to tackle industrial issues regarding SO2 emission into the atmosphere due to its sorbent being highly accessible, the lack of water dependency and reduction in waste management. This study examined the feasibility of using fibrous mesoporous silica KCC-1 which has been reported to possess better properties than several other predecessor mesoporous silica as alternative sorbents for dry FGD. Calcium metal was introduced to overcome the lack of active sites available on KCC-1 while simultaneously providing sufficient basicity to counter the increase in acidity brought by SO2 adsorption. Three sorbent modification parameters were analyzed: metal loading (5–15 wt %), calcination temperature (823–973 K) and calcination time (5.5–7 h), and the prepared samples were characterized using BET surface area and pore analyzer, FESEM-EDX, XRD and H2-TPR. The breakthrough experiment was conducted using a lab scale fixed bed reactor system with 1500 ppm SO2/N2 at 200 mL/min. SO2 removal was optimized by sorbent prepared with calcium loading of 5 wt %, calcination temperature of 923 K and calcination time of 6.5 h with adsorption capacity of 3241.94 mg SO2/g KCC-1. The optimized sorbent demonstrated highest surface area, good pore development, high dispersion of calcium metal, appropriate impregnation of calcium oxide which caused only minor distortion to the silica framework of KCC-1. Subjecting the optimized sample to five consecutive regeneration cycles by heating at 773 K while simultaneously flowing N2 gas for an hour shows good regeneration performance with a total final reduction of only 25% from the initial adsorption capacity obtained from a fresh sample.
format	Article
author	Hanif, Muhammad Adli Ibrahim, Naimah Md. Isa, Khairuddin Muhammad Ridwan, Fahmi Tuan Abdullah, Tuan Amran Abdul Jalil, Aishah
author_facet	Hanif, Muhammad Adli Ibrahim, Naimah Md. Isa, Khairuddin Muhammad Ridwan, Fahmi Tuan Abdullah, Tuan Amran Abdul Jalil, Aishah
author_sort	Hanif, Muhammad Adli
title	Tailoring the properties of calcium modified fibrous mesoporous silica KCC-1 for optimized sulfur dioxide removal
title_short	Tailoring the properties of calcium modified fibrous mesoporous silica KCC-1 for optimized sulfur dioxide removal
title_full	Tailoring the properties of calcium modified fibrous mesoporous silica KCC-1 for optimized sulfur dioxide removal
title_fullStr	Tailoring the properties of calcium modified fibrous mesoporous silica KCC-1 for optimized sulfur dioxide removal
title_full_unstemmed	Tailoring the properties of calcium modified fibrous mesoporous silica KCC-1 for optimized sulfur dioxide removal
title_sort	tailoring the properties of calcium modified fibrous mesoporous silica kcc-1 for optimized sulfur dioxide removal
publisher	Elsevier Inc.
publishDate	2022
url	http://eprints.utm.my/103299/ http://dx.doi.org/10.1016/j.micromeso.2021.111610
_version_	1781777675688345600
score	13.211869

Tailoring the properties of calcium modified fibrous mesoporous silica KCC-1 for optimized sulfur dioxide removal

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