title: POME is treated for removal of color from biologically treated POME in fixed bed column: applying wavelet neural network (WNN).
abstract: As Malaysia is one of the world's largest producer of palm oil, large amounts of palm oil mill effluent (POME) is generated. It was found that negatively charged components are accountable for POME color. An attempt was made to remove residual contaminants after conventional treatment using anion base resin. Adsorption experiments were carried out in fixed bed column. Various models such as the Thomas, the Yoon-Nelson, the Wolborska and BDST model were used to fit the experimental data. It was found that only the BDST model was fitted well at the initial breakthrough time. A wavelet neural network model (WNN) was developed to model the breakthrough curves in fixed bed column for multicomponent system. The results showed that the WNN model described breakthrough curves better than the commonly used models. The effects of pH, flow rate and bed depth on column performance were investigated. It was found that the highest uptake capacity was obtained at pH 3. The exhaustion time appeared to increase with increase in bed length and decrease in flow rate.
authors.affiliation: Department of Chemical and Environmental Engineering, Faculty of Engineering, Universiti Putra Malaysia, 43300 UPM Serdang, Selangor, Malaysia; Center for Dryland Agriculture, Bayero University Kano, P.M.B. 3011, Kano State, Nigeria.
authors.forename: M M
authors.initials: MM
authors.lastname: Bello
authors.forename: M M
authors.initials: MM
authors.lastname: Nourouzi
authors.forename: L Chuah
authors.initials: LC
authors.lastname: Abdullah
authors.forename: Thomas S Y
authors.initials: TS
authors.lastname: Choong
authors.forename: Y S
authors.initials: YS
authors.lastname: Koay
authors.forename: S
authors.initials: S
authors.lastname: Keshani
mesh_terms: D000327:Adsorption; D003116:Color; D007220:Industrial Waste; D016571:Neural Networks, Computer; D000073878:Palm Oil; D010938:Plant Oils / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D062065:Wastewater / Q000737:chemistry*
chemical_list: D007220:Industrial Waste; D000073878:Palm Oil; D010938:Plant Oils; D062065:Wastewater
keywords: Breakthrough model; Fixed bed column; POME; Resin; Wavelet neural network