Study on Vapor Adsorption Process of Ethanol-water System on Potato Powder

Experiments have been carried out in a fixed bed adsorption column(φ25 mm×900 mm) packed with potato powder.The effects of different adsorption process conditions were investigated.The results showed that under the experimental conditions,the production capacity and breakthrough time of potato for alcohol-water systems increases when the temperature falls,reduce,the size of adsorbent become smaller and the bed depth increases.The adsorption capacity was 205.1g/1 000 g adsorbent at 80 ℃,inlet ethanol concentration 94.5%(volume fraction),the size of adsorbent 245~350 μm,the bed depth 700 mm and vapor superficial velocity 3 mL/min.The potato powder is a potential biomaterial for removing water from ethanol-water mixtures.