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Quaternary Ammonium based Eutectic Ionic Liquids (EILs) as absorbent for Sulfur Dioxide (SO2)

Sulfur dioxide (SO2) is a corrosive acid gas which pose severe threat to the environment and human health. Therefore, its removal from air is necessary to protect human health and environmental quality. Existing SO2 removal technologies involves using lime or limestone in wet scrubbers. Recently, th...

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Main Authors: Chandran, K., Chong, F.K., Zaid, H.F.M.
Format: Conference or Workshop Item
Published: Institute of Physics Publishing 2020
Online Access:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85081295959&doi=10.1088%2f1757-899X%2f736%2f2%2f022075&partnerID=40&md5=583654447a48fd96cc758e7b09052a17
http://eprints.utp.edu.my/24633/
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spelling my.utp.eprints.246332021-08-27T06:24:44Z Quaternary Ammonium based Eutectic Ionic Liquids (EILs) as absorbent for Sulfur Dioxide (SO2) Chandran, K. Chong, F.K. Zaid, H.F.M. Sulfur dioxide (SO2) is a corrosive acid gas which pose severe threat to the environment and human health. Therefore, its removal from air is necessary to protect human health and environmental quality. Existing SO2 removal technologies involves using lime or limestone in wet scrubbers. Recently, the application of eutectic ionic liquids (EILs) were extensively employed to capture SO2 gases. The main objective of this study is to determine the SO2 absorption capacities of quaternary ammonium based EILs. Quaternary ammonium- based EIL, choline chloride which is known to display many advantages in absorbing acidic gas, were selected as the hydrogen bond acceptor (HBA) and three different types of hydrogen bond donor (HBD) were investigated; glycerol, ethylene glycol, and urea. The absorption experiments were conducted in a laboratory scale reactor. SO2 gas stream was passed continuously through the reactor to get contact with the EIL surface and be absorbed, and the absorption was monitored using sodium hydroxide (NaOH) solution with pH 10. The results show that SO2 was absorbed by choline chloride (ChCl) based EILs within 120 min of contact time. The absorption capacity of ChCl with glycerol was 0.54 mg/g, 0.54 mg/g and 0.53 mg/g for 1:2, 1:3 and 1:4, respectively. The results also show that the SO2 absorption capacity increases as the ChCl:Gly molar ratio increases. The extent of absorption was also greatly affected by the composition of the EILs. ChCl with ethylene glycol gave the highest absorption capacity of 0.57 mg/g of the SO2 was absorbed compared to ChCl with glycerol as well as with urea. The use of EILs as an absorbent are a promising method for SO2 capture. © Published under licence by IOP Publishing Ltd. Institute of Physics Publishing 2020 Conference or Workshop Item NonPeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-85081295959&doi=10.1088%2f1757-899X%2f736%2f2%2f022075&partnerID=40&md5=583654447a48fd96cc758e7b09052a17 Chandran, K. and Chong, F.K. and Zaid, H.F.M. (2020) Quaternary Ammonium based Eutectic Ionic Liquids (EILs) as absorbent for Sulfur Dioxide (SO2). In: UNSPECIFIED. http://eprints.utp.edu.my/24633/
institution Universiti Teknologi Petronas
building UTP Resource Centre
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Petronas
content_source UTP Institutional Repository
url_provider http://eprints.utp.edu.my/
description Sulfur dioxide (SO2) is a corrosive acid gas which pose severe threat to the environment and human health. Therefore, its removal from air is necessary to protect human health and environmental quality. Existing SO2 removal technologies involves using lime or limestone in wet scrubbers. Recently, the application of eutectic ionic liquids (EILs) were extensively employed to capture SO2 gases. The main objective of this study is to determine the SO2 absorption capacities of quaternary ammonium based EILs. Quaternary ammonium- based EIL, choline chloride which is known to display many advantages in absorbing acidic gas, were selected as the hydrogen bond acceptor (HBA) and three different types of hydrogen bond donor (HBD) were investigated; glycerol, ethylene glycol, and urea. The absorption experiments were conducted in a laboratory scale reactor. SO2 gas stream was passed continuously through the reactor to get contact with the EIL surface and be absorbed, and the absorption was monitored using sodium hydroxide (NaOH) solution with pH 10. The results show that SO2 was absorbed by choline chloride (ChCl) based EILs within 120 min of contact time. The absorption capacity of ChCl with glycerol was 0.54 mg/g, 0.54 mg/g and 0.53 mg/g for 1:2, 1:3 and 1:4, respectively. The results also show that the SO2 absorption capacity increases as the ChCl:Gly molar ratio increases. The extent of absorption was also greatly affected by the composition of the EILs. ChCl with ethylene glycol gave the highest absorption capacity of 0.57 mg/g of the SO2 was absorbed compared to ChCl with glycerol as well as with urea. The use of EILs as an absorbent are a promising method for SO2 capture. © Published under licence by IOP Publishing Ltd.
format Conference or Workshop Item
author Chandran, K.
Chong, F.K.
Zaid, H.F.M.
spellingShingle Chandran, K.
Chong, F.K.
Zaid, H.F.M.
Quaternary Ammonium based Eutectic Ionic Liquids (EILs) as absorbent for Sulfur Dioxide (SO2)
author_facet Chandran, K.
Chong, F.K.
Zaid, H.F.M.
author_sort Chandran, K.
title Quaternary Ammonium based Eutectic Ionic Liquids (EILs) as absorbent for Sulfur Dioxide (SO2)
title_short Quaternary Ammonium based Eutectic Ionic Liquids (EILs) as absorbent for Sulfur Dioxide (SO2)
title_full Quaternary Ammonium based Eutectic Ionic Liquids (EILs) as absorbent for Sulfur Dioxide (SO2)
title_fullStr Quaternary Ammonium based Eutectic Ionic Liquids (EILs) as absorbent for Sulfur Dioxide (SO2)
title_full_unstemmed Quaternary Ammonium based Eutectic Ionic Liquids (EILs) as absorbent for Sulfur Dioxide (SO2)
title_sort quaternary ammonium based eutectic ionic liquids (eils) as absorbent for sulfur dioxide (so2)
publisher Institute of Physics Publishing
publishDate 2020
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85081295959&doi=10.1088%2f1757-899X%2f736%2f2%2f022075&partnerID=40&md5=583654447a48fd96cc758e7b09052a17
http://eprints.utp.edu.my/24633/
_version_ 1738656617566568448
score 13.211869

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