Method for continuous fermentation of glucose xylose by coupling immobilized yeast cell and pervaporation membrane

A method to continuously fermenting glucose and xylose by coupling immobilized yeast cell and pervaporation membrane is disclosed, which pertains to the field of fermentation engineering of microbial, especially relates to a ethanol production method by continuously fermenting glucose and xylose. The invention is characterized by inoculating saccharomyces cerevisiae and pachysolen tannophilus into two fermentors respectively after immobilizing the same by calcium alginate gel bead, and continuously fermenting mixed liquid of glucose and xylose by coupling immobilized yeast cell and pervaporation membrane. The effect and advantage of the invention is that by immobilizing yeasts with calcium alginate gel bead, not only cell concentration is increased, but also pollution and resistance of pervaporation membrane caused by adhesion of cells is reduce; inhibition of produced ethylene to yeast cell is reduced by pervaporation; glucose and xylose can be simultaneously fermented; materials are drawed from plant straw, not from grain. Resource is saved and environmental protection caused by burning plant straw is reduced.