Application of CCD in RSM to obtain optimize treatment of POME using Fenton oxidation process. (December 2015)

• Record Type: Journal Article
• Authors: Saeed, Mohamed Osman; Azizli, Khairun; Isa, Mohamed Hasnain; Bashir, Mohammed J.K.
• Is Part Of: Journal of water process engineering. Volume 8(2015)
• Page Start: e7
• Page End: e16
• Publication Date: 2015-12
• Subjects: Fenton process -- Oxidation -- Industrial wastewater -- Optimization -- POME; Water-supply engineering -- Periodicals; Saline water conversion -- Periodicals; Seawater -- Distillation -- Periodicals; Sanitary engineering -- Periodicals; Sewage -- Purification -- Periodicals; 627
• DOI: 10.1016/j.jwpe.2014.11.001
• Languages: English
• ISSNs: 2214-7144

Abstract

Abstract: Post treatment palm oil mill effluent (POME) is typically non-biodegradable and contains high organic and inorganic matter. This study aims to optimize the operating parameters of the Fenton process in removing recalcitrant organics from POME by using a central composite design (CCD), which is a response surface methodology (RSM) module in the Design-Expert ® software. Important parameters such as reaction time, H2 O2 and Fe 2+ ion concentrations, and pH were empirically determined and successfully optimized via RSM. Significant statistical quadratic polynomial for color and COD removal efficiency were obtained via regression analyses R 2, (0.81 and 0.70) for color and COD, respectively. The highest results were 97.36% removal for color and 91.11% removal for COD at pH 3.5 and 30 min of reaction time. Numerical optimization based on desirable functions was employed; 92.1% of color and 85.1% of COD were removed efficiently at pH (3.0–5.0) with a final pH of 2.85 (after reaction settlement), 4.57 g/L H2 O2 and 1.88 g/L Fe 2+ ions concentration, respectively, and 30 min of reaction time at 120 rpm agitation rate. The result showed that the Fenton process, at an accurate level, may be used as an effective technology for the post treatment of POME before final discharge into a nearby water body.