Recycling　and　utilizing　fusel　oil,　the　by-product　of　ethanol　fermentation,　is　of　significant　importance　for　both　environmental　and　economic　perspective.　In　this　study,　cross-linked　sulfated　polyelectrolyte　complex　hollow　fiber　membranes　were　applied　to　pervaporative　remove　the　water　in　fusel　oil.　The　membranes　were　fabricated　from　chitosan　and　dextran　sulfate　sodium　via　the　＂complexation-sulfation＂　method　followed　by　chemical　cross-linking　and　surface　coating.　The　membrane　preparation　condition　and　pervaporation　operation　condition　were　optimized　to　achieve　satisfactory　alcohol　dehydration　performance.　Where　a　high　flux　of　1354　gm(-2)　h(-1)　and　a　permeate　water　content　of　99.4　wt%　in　dehydrating　10　wt%　ethanol/water　mixture　at　60　degrees　C　was　achieved.　Moreover,　when　applied　in　actual　fusel　oil　dehydration,　the　organics　content　in　feed　can　be　increased　from　90　to　99　wt%　with　high　efficiency　and　excellent　water　selectivity　(water　content　in　permeate　always　above　98.5　wt%).　This　research　offered　an　effective　approach　to　remove　water　in　multi-component　fusel　oil.　(C)　2018　Taiwan　Institute　of　Chemical　Engineers.　Published　by　Elsevier　B.V.　All　rights　reserved.