餐廚廢棄物生物轉化生產乙醇工藝研究

論文編號:SW222  論文字數:10446,頁數:19

摘 要：本研究擬利用餐廚廢棄物(泔水)為主要原料生物轉化生產乙醇，首先采集泔水，然后經過攪拌，打勻，制成糊狀，加入一定比例的輔料，利用高產酒精酵母將泔水中的有效物質轉化為乙醇，通過培養條件的優化，提高乙醇的得率。通過研究玉米粉添加量、酶解時間、發酵時間、發酵溫度、接種量、初始pH值等對泔水轉化乙醇產量的影響，并在此基礎上利用正交試驗優化發酵培養條件，提高乙醇的產量以及轉化率。結果表明：玉米粉添加量為22%，酶解時間為35min，發酵時間為72h，發酵溫度為32℃，接種量為10%，初始pH值為4.0，酒精度達到最高值，即轉化生產乙醇效果最好。
關鍵詞：泔水；發酵；酒精度

Abstract：This research was done to make use of the waste food as main raw material to produce ethanol. The waste food were mixed and agitated with some accessories, and then fermentated with Saccharomyces cerevisiae. The research was conducted to study the adding level of corn powder, the enzyme acting time, fermentation time, fermentation temperature and inoculating level, pH on the production of ethanol from the waste food. Results showed that the optimal conditions were: corn powder 22%, the enzyme acting for 35 mins, fermention hydrolysing as 72 h, fermention temperature as 32℃, inoculating level 10%, the starting pH 4.0.
Keyword: Waste food; Fermention; Ethanol degree