Preparation of inexpensive NaA zeolite membrane on pozzolan support at low temperature for dehydration of alcohol solutions

•Low-cost NaA zeolite membrane was prepared on flat pozzolan support.•Hight-quality NaA zeolite was hydrothermally prepared by in situ crystallization.•The prepared membrane was applied for alcohols dehydration via pervaporation.•The membrane shows excellent performance in terms of flux and separation factor.