Removal of gaseous methyl tert-butyl ether using bagasse activated carbon pretreated with chemical agents

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Publication Details

Author list: Pongkua W., Dolphen R., Thiravetyan P.

Publisher: John Wiley and Sons Ltd

Publication year: 2019

Volume number: 94

Issue number: 5

Start page: 1551

End page: 1558

Number of pages: 8

ISSN: 0268-2575

eISSN: 0268-2575

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85061292109&doi=10.1002%2fjctb.5918&partnerID=40&md5=b122032f602f492020ae6bad986a5107

Languages: English-Great Britain (EN-GB)

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Abstract

Background: Methyl tert-butyl ether (MTBE), an anti-knocking reagent emitted from incomplete gasoline combustion can affect human health. Bagasse activated carbon (AC) was modified by H 2 SO 4 , KOH, CaCl 2 /HCl and HNO 3 to increase surface area and surface functional groups which led to enhance MTBE adsorption. Results: The results showed maximum adsorption capacity (Q max ) of MTBE by bagasse AC modified by H 2 SO 4 was the highest (989.33 mg g −1 ), while the lowest was bagasse AC modified by HNO 3 (463.82 mg g −1 ). Not much difference was shown to the surface area and micropore volume of the different modified materials. Therefore, the surface functional groups on the different modified materials played an important role in MTBE adsorption. H 2 SO 4 modified bagasse AC had a higher maximum adsorption capacity than a commercial AC (CGC12) (560.48 mg g −1 ), which might be due to the presence of higher ester (CO), carbonyl (CO) and CH stretching groups than commercial AC and other modified bagasse ACs. Conclusion: Surface functional groups of adsorbents play an important role in MTBE adsorption. Consequently, it will be possible to enhance MTBE removal by increasing ester (CO), carbonyl (CO) and CH groups on the material's surface. These functional groups are directly involved in MTBE adsorption. © 2019 Society of Chemical Industry. © 2019 Society of Chemical Industry

Keywords

bagasse activated carbon modifications, methyl tert-butyl ether (MTBE), surface functional group