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Desulphurization of Diesel by Cellulosic Fiber

Mohamed Zikri, Ariff Fikri (2012) Desulphurization of Diesel by Cellulosic Fiber. UNIVERSITI TEKNOLOGI PETRONAS, UNIVERSITI TEKNOLOGI PETRONAS. (Unpublished)

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Abstract

The new stringent global regulation to produce low sulfur petroleum products has put most refineries in alert to research and implement new technology to meet the requirement to lower emission of Sulfur Dioxide and Hydrogen Sulfide. European country has set Euro 4 rule in 2005 to limit sulfur content in gasoline and diesel to 50 ppm maximum. In Malaysia, Euro 4 M standards will be implemented in two years’ time from current Euro 2M standard of 500 ppm sulfur content. Most oil and gas and petrochemical companies are developing technologies that cover enhanced hydrotreatment process. This project explored the use of abundant palm oil fibers as the mean of desulphurization. OPEFB cellulose structure was modified with carboxylic group treatment such as acetic acid, oxalic acid, and EDTA. Metal ions such as Copper, Zinc, and Lead are loaded into the pores of modified cellulose such that the positively charged metal ions will capture the slightly polar sulphur atom of Dibenzothiophene by removing the organosulphur and toxicity due to the Benzene ring. The sorption processes of heavy metals on modified cellulose were performed in a batch mode by varying the contact time, initial metal concentration and pH of the solution. The samples were tested with Atomic Absorption Spectrum analyzer to measure the concentration of metal ions adsorbed. Lead has shown highest adsorption capacity of 8.5mg/g cellulose EDTA adsorbent with 120 minutes contact time and 8.1mg/g in cellulose oxalic. Zn adsorption came second at 6.8 and 6.4 mg/g cellulose EDTA and cellulose oxalic respectively while Copper was recorded at 6.6 and 6.2mg/g adsorbent. The metal ions adsorption fit Freundlich isotherm model and Pseudo 2nd Order kinetic trending. Sulphur removal study is performed by batch contacting 0.1 g of the metal loaded cellulose with 10 mL of diesel. Treatment by cellulose EDTA loaded with Lead provide sulphur removal of 52.2%, Copper (14.9%) and Zinc (16.4%) while cellulose oxalic dispersed in Lead solution result in reduction of 44.8%, Copper (29.9%), and Zinc (28.4%).

Item Type: Final Year Project
Academic Subject : Academic Department - Chemical Engineering - Separation Process
Subject: T Technology > TP Chemical technology
Divisions: Engineering > Chemical
Depositing User: Sharifah Fahimah Saiyed Yoep
Date Deposited: 01 Apr 2013 11:34
Last Modified: 25 Jan 2017 09:40
URI: http://utpedia.utp.edu.my/id/eprint/6139

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