Removal of Membrane Contamination in the Process of Preparating Food Grade Soy Lecithin by Inorganic Membrane Micro-Filtration

Abstract:

This manuscript is to study the membrane contamination removal technology process in the process of preparating food grade soy lecithin by inorganic membrane micro-filtration.Through comparing the effect of n-hexane washing and NaOH solution washing on membrane fiux and the acetone insoluble content,it was found that n-hexane with low moisture efficient delay the membrane fouling,and the highest membrane flux can be acquired with washing by 2 g/dL NaOH solution in 80℃ and 2 hours.The acetone insoluble content also arrived at the highest value (more than 60%).