液膜液型膜蒸留によるエタノール水溶液の等温条件における蒸留 : 液膜液型膜蒸留によるエタノールの分離を伴う連続発酵(第1報)

概要

論文の詳細を見る
Liquid-membrane-liquid-type membrane distillation (LML-membrane distillation) for aqueous ethanol solution was investigated. The experiment was done using porous polytetrafluoroethylene (PTFE) tubing at isothermal conditions on the liquid in the still and the absorption liquid that flowed in the PTFE tube.When ethanol-water mixtures was used for the liquid in the still, the permeatioin rates of ethanol through the PTFE membrane were affected by the flow rates of the absorption liquid, the revolutions of the stirrer, and the differences of the ethanol concentration between the liquid in the still and the absorption liquid.When the prepared mash (a mixture of rice, koji, water, and ethanol) was used for the liquid in the still, the permeation rates of ethanol were not decreased by fouling.When the temperature of the liquid in the still and that of the absorption liquid at the inlet of PTFE tube were equal, aqueous ethanol solutions were recovered by LML-membrane distillation, but the concentrations of ethanol in the absorption liquid were lower than the concentrations of liquid in the still.The application of LML-membrane distillation to continuous ethanol fermentation was tested. The continuous ethanol fermentation was done at 17.5℃ by fed 50% (w/w) glucose solution. The LML-membrane distillation of this method in fermentor could be continued for 22 days.
社団法人日本生物工学会の論文
1989-11-25