Oxidative mineralisation of petroleum refinery effluent using Fenton-like process

Hasan, Diya'uddeen Basheer and Abdul Raman, Abdul Aziz and Daud, Wan Mohd Ashri Wan (2012) Oxidative mineralisation of petroleum refinery effluent using Fenton-like process. Chemical Engineering Research and Design, 90 (2). pp. 298-307. ISSN 0263-8762

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Official URL: https://doi.org/10.1016/j.cherd.2011.06.010

Abstract

Petroleum refinery effluents (PREs) are wastewaters characterised by high values of chemical oxygen demand (COD) and total organic carbon (TOC). Mineralisation of PRE is not commonly reported. For Fenton oxidation, in particular, reported PRE mineralisation is low. In this paper, treatability of a petroleum refinery effluent using a Fenton-like oxidative reaction is described. A statistically designed experimental matrix was used to evaluate the individual and combined effects of process variables based on a five-level central composite design (CCD). Response surface methodology (RSM) was employed to optimise the parameters of interest (COD and TOC), and response surface equations were subsequently developed. These parameters were optimised from studies of the independent variables, for reaction time t(r) = 30-240 mm, molar ratio of hydrogen peroxide to the organic wastewater H2O2:PRE = 2-12 and mass ratio of hydrogen peroxide to catalyst H2O2:Fe3+ = 5-20. The COD and TOC of the PRE at an initial pH of 7 were 1343 mg O-2/L and 398 mg C/L, respectively. Under optimal conditions, maximal TOC and COD reduction achieved within 30 min of oxidation reaction were 70% and 98.1%, respectively. The obtained models had correlation coefficients (R-2 and R-adj(2)) of 0.9984 and 0.9916 for TOC and 0.9636 and 0.8835 for COD. At a pH of 3, corresponding optimal oxidation conditions were found to be H2O2 = 1008.0 mM and Fe3+ = 686.0 mg, that is, a molar ratio of H2O2:PRE = 12 and mass ratio of H2O2:Fe3+ = 5. (C) 2011 The Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.

Item Type: Article
Uncontrolled Keywords: Oxidative mineralisation of petroleum refinery
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Engineering
Depositing User: Mr. Mohammed Salim Abd Rahman
Date Deposited: 11 Jan 2013 02:12
Last Modified: 25 Sep 2019 09:21
URI: http://eprints.um.edu.my/id/eprint/4376

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