Modelling Hydraulic Backwash In Ultrafiltration Process: A Statistical Approach

M.O. Daramola; E.F. Aransiola; Eriola Betiku; A.G. Adeogun

M.O. Daramola Biochemical Engineering Laboratory, Department of Chemical Engineering, Obafemi Awolowo University, Ile Ife, Osun State, Nigeria
E.F. Aransiola Biochemical Engineering Laboratory, Department of Chemical Engineering, Obafemi Awolowo University, Ile Ife, Osun State, Nigeria
Eriola Betiku Biochemical Engineering Laboratory, Department of Chemical Engineering, Obafemi Awolowo University, Ile Ife, Osun State, Nigeria
A.G. Adeogun National Center for Hydropower Research and Development University of Ilorin, Ilorin, Nigeria.

Keywords: ultrafiltration, backwash, filtration, modelling, response surface methodology

Abstract

Modelling of hydraulic backwash (HB) during ultrafiltration process is presented in this paper with the aim to studying the influence of operating parameters on HB using statistical approach under pilot scale conditions. The HB model describes change in transmembrane pressure ( ) as a function of backwash frequency, backwash flux and backwash time. The development and validation of the model was based on the experimental data from a series of experiments designed using full 2³ factorial design method and implemented in SMART XIGA pilot plant with an 8-inch polyether sulfone (PES) membrane module. The results showed that HB is largely influenced by backwash time and backwash frequency but with insignificant influence from the backwash flux. However for further implementation in practice, due to changes in the feed water quality, a regular update of the models is necessary and can be easily obtained using the methodology presented in this paper.

Author Biographies

M.O. Daramola, Biochemical Engineering Laboratory, Department of Chemical Engineering, Obafemi Awolowo University, Ile Ife, Osun State, Nigeria

Biochemical Engineering Laboratory,

Department of Chemical Engineering,

Obafemi Awolowo University, Ile Ife, Osun State, Nigeria

E.F. Aransiola, Biochemical Engineering Laboratory, Department of Chemical Engineering, Obafemi Awolowo University, Ile Ife, Osun State, Nigeria

Biochemical Engineering Laboratory,

Department of Chemical Engineering,

Obafemi Awolowo University, Ile Ife, Osun State, Nigeria

Eriola Betiku, Biochemical Engineering Laboratory, Department of Chemical Engineering, Obafemi Awolowo University, Ile Ife, Osun State, Nigeria

Biochemical Engineering Laboratory,

Department of Chemical Engineering,

Obafemi Awolowo University, Ile Ife, Osun State, Nigeria

A.G. Adeogun, National Center for Hydropower Research and Development University of Ilorin, Ilorin, Nigeria.

National Center for Hydropower Research and Development

University of Ilorin, Ilorin, Nigeria.

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