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Advanced Oxidation Process of Sulfolane in Wastewater Using Fenton Reagent

Ahmad Basri, Nurul'Ain (2009) Advanced Oxidation Process of Sulfolane in Wastewater Using Fenton Reagent. Universiti Teknologi PETRONAS. (Unpublished)

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Abstract

Toxicity from industrial wastewater remains a problem even after conventional activated sludge treatment process, because of the persistence of some toxicant compounds. Among chemical processes, the advanced oxidation process (AOP) has been used to reduce the organic load or toxicity of different wastewaters. AOPs are based on the generation of hydroxyl free radicals, which have a high electrochemical oxidant potential. The generation of hydroxyl radicals involves the combination of classical oxidants, such as H202 or O3 with UV radiation or a catalyst. The formed radicals react with organic materials breaking them down gradually in a stepwise process. The generation of hydroxyl radicals can be achieved by a variety of reactions, such as ozone/UV, hydrogen peroxide/UV, Fenton Oxidation, photo-Fenton, or titanium dioxide/hydrogen peroxide/solar radiation. The advantage of AOPs is that they effectively destroy the organic compounds, converting them mainly to carbon dioxide and water. Sulfolane is widely used as an industrial solvent to purify natural gas where large amounts of waste contains Sulfolane to be disposed off to wastewater during the downtimes is produced. The present study is to investigate the effects of H2O2 concentration, Iron concentration, pH and temperature of the treatment of wastewater containing abundant Sulfolane by Advanced Oxidation Process (AOP) using Fenton reagent. This process consists of Ferrous salts combined with hydrogen peroxide under acidic conditions. The test series conducted consists of test series A: H202: Fe2+ = 1:1 (1 mole ofH202to 1mole ofFe2+), test series B: H202: Fe2+ = 1:2 (1 mole ofH202to 2 mole ofFe 2+), test series C: H202: Fe 2+ =2:1 (2 mole ofH202 to 1 mole of Fe 2+), test series D: The effect of pH for pH 2, 3, 4-5, 7-8 and test series E: the effect of temperature for 27°C, 40°C and 60°C. Advanced Oxidation Process using Fenton reagent is effective at enhancing the biodegradability of wastewater. This reaction allows the generation ofhydroxyl radicals as shown in reaction (1): Fe 2+ + H202 • Fe3+ + OH" +OH# (1)

Item Type: Final Year Project
Academic Subject : Academic Department - Chemical Engineering - Reactor Technology
Subject: T Technology > TP Chemical technology
Divisions: Engineering > Chemical
Depositing User: Users 2053 not found.
Date Deposited: 22 Oct 2013 09:50
Last Modified: 22 Oct 2013 09:50
URI: http://utpedia.utp.edu.my/id/eprint/9189

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