Effect of various cleaning agent on microfiltration membrane fouled by oil emulsion
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Date
2018-06
Authors
Aisyah Muhamad
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Abstract
Cleaning strategies of microfiltration membrane fouled during separation of oil
emulsion have been thoroughly study in this research work. There is various cleaning
medium evaluated based on their cleaning efficiencies including alkali, acid, chemical
surfactant and bio surfactant rhamnolipid. Analysis of flux behaviour indicates possibly
cake formation is a dominant fouling model. This model is effectively fitted to the
experimental flux behaviour . The developed cake is responsible for severe fouling and
decrease membrane flux. Cleaning efficiency demonstrated by determination of flux
restored ratio (FRR) and flux recovery (FR). Sodium dodecyl sulphate (SDS) obtain
highest flux restored recovery (FRR) of 28.38% and flux recovery (FR) of 24.11%
respectively. Cleaning by SDS largely remove the foulant on the membrane. Influence
of operating condition of cleaning the MF membrane were made such as concentration,
cleaning time, cleaning trans membrane pressure and method of cleaning. SDS with
concentration of 0.10 M SDS selected for futher investigation on the optimum condition
for cleaning medium. SDS demonstrated to be effective in cleaning for 30 minutes
operation of cleaning time by employing technique of forward flushing at trans membrane
pressure of 0.1 MPa.