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Development of Bentonite Based Solid Support for C02 Removal

Mohd Fudzaili, Muhammad Faiz (2011) Development of Bentonite Based Solid Support for C02 Removal. Universiti Teknologi Petronas. (Unpublished)

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Abstract

It is well known that the main contributor of greenhouse gases is C02. The increasing C02 concentration in the atmosphere has resulted in a lot of research finding ways to slow down this trend. Established traditional technologies to capture C02 use aqueous amines. However there are drawbacks to this method thus much attention has been given to solid support. Bentonite clays have high cation exchange capacity, swelling capacity, high surface areas, and consequential strong adsorption/absorption capacities. Moreover, Bentonite clays are cheap and have been proved as a suitable candidate in removing organic compounds such as benzene form water. Thus, the objective of this research is to develop bentonite clay into becoming an adsorbent for C02. Bentonite clays on its own are not effective adsorbents for organic compounds thus modifications to the surface chemistry can be done to enhance its capabilities by changing the surface form hydrophilic to organophilic (hydrophobic). This type of clays called as organoclays can be synthesized by exchanging the metallic cations on the surface of bentonite clays such as Mi+, k + and Na + with organic cations. Organic cations such as Tetramethylammonium (TMA) and Hexadecyltrimethylammonium (HDTMA) have been used to synthesize organoclays and have used successfully to treat water. Thus intercalation of bentonite clay with N-cetyltrimethylammonium bromide (CTMB) cations was done. The RAMAN spectroscopy results showed that the CTMB cations were successfully intercalated into the clays. Results from Transmission Electron Microscopy (TEM) showed that the organo bentonites had increased its basal spacing from 9.72 to 14.03 A. COz Adsorption were conducted and results showed the organo bentonite had the ability to adsorb C02 but at relatively low amounts.

Item Type: Final Year Project
Academic Subject : Academic Department - Chemical Engineering - Material Development
Subject: T Technology > TP Chemical technology
Divisions: Engineering > Chemical
Depositing User: Users 2053 not found.
Date Deposited: 22 Oct 2013 09:03
Last Modified: 25 Jan 2017 09:41
URI: http://utpedia.utp.edu.my/id/eprint/8875

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