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Recovery oflonic Liquid [Bmim][FeCI.I] After Sulfur Extraction From Model Oil Using Liquid-Liquid Extraction Process

Beserdin, Nur Hafizah (2012) Recovery oflonic Liquid [Bmim][FeCI.I] After Sulfur Extraction From Model Oil Using Liquid-Liquid Extraction Process. Universiti Teknologi PETRONAS. (Unpublished)

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Ionic Liquid (IL) is proven to be able to extract sulphur compound from petroleum distillates such as diesel and gasoline providing an alternative to replace the conventional sulphur removing method that is the Catalytic Hydrodesulphurization (HDS), which requires both high temperature and pressure. Many researchers have pointed out the major concerns in the use of IL is their relatively high cost, which makes their recycling an important issue for further study. In addition, currently, quite limited studies are being conducted on the recovery, regeneration or recycling of IL after extractive desulphurization. Therefore, this research project is conducted where attention are given to the recycling and recovery of the chosen IL that is, 1-butyl-3-methylirnidazolium tetrachloroferrate [Bmirn][FeC4] using Liquid-liquid Extraction (LLE) method with a co-solvent, hexane. The aim of this research is to study the recyclability of the IL and to investigate on the effect of three manipulated variables which are, the contact time of the regeneration process, the ratio between sulphur-loaded IL to the cosolvent and the recovery process temperature on the recovery efficiency in term of sulphur removal. Project scope are divided into four stages; synthesis of the [Bmim][FeC4] IL, extraction of benzothiophene from model oil Dodecane, recovery of the sulphur-loaded [Bmirn][FeC4] using hexane as solvent and lastly to re-use the recovered [Bmim][FeC14]. The characterization is done using Fourier Transform InfraRed (FT-IR) and Carbon, Hydrogen, Nitrogen and Sulfur Analyzer (CHNS). The approach for this project is mainly LLE. Extractive desulfurization between [Bmirn][FeC14] and model oil containing sulphur is done to obtained sulphur-loaded [Bmim][FeC14] and extraction using hexane is conducted to recover the IL. The recovered [Bmim][FeC4] is then reused for extractive desulfurization and the process is repeated. Recyclability is evaluated without recovery. The result shows the chemical composition of [Bmim][FeC4] does not change meaning that the recpvery process is a successful and optimizations on IL to solvent ratio prove that ratio of I :2 is the best option for regeneration. 80 minutes contact time and higher temperature ranging between 45"C to 65"C gives the highest efficiency of recovery.

Item Type: Final Year Project
Academic Subject : Academic Department - Chemical Engineering - Ionic Liquid
Subject: T Technology > TP Chemical technology
Divisions: Engineering > Chemical
Depositing User: Users 2053 not found.
Date Deposited: 25 Oct 2013 10:45
Last Modified: 25 Jan 2017 09:39
URI: http://utpedia.utp.edu.my/id/eprint/9888

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