泔水回收再利用的研究

生物工程论文编号:SW019  论文字数:10525,页数:24

目  录
中文摘要 I
英文摘要 II
目录 III
1. 绪论 1
 1.1 泔水的特性 1
 1.2 泔水中油脂的处理 1
 1.3 酒精发酵  2
2. 实验部分 5
 2.1 试验材料  5
 2.2 试验方法 6
3. 结果与讨论 11
 3.1 泔水中含水量的测定结果   11
 3.2 油脂含量测定结果 11
 3.3 静置提油率 11
 3.4 离心提油率 11
 3.5 加热与不加热废油脂提取率 12
 3.6 葡萄糖标准曲线的制作 12
 3.7 糖化时间对酒精发酵的影响 12
 3.8 不同原料配比对发酵的影响 13
 3.9 油脂含量对酒精发酵的影响 14
 3.10 纤维素酶添加量对酒精发酵的影响 14
 3.11 接种量对酒精发酵的影响 15
 3.12 放大实验1 15
 3.13 放大实验2 16
 3.14 放大实验3 17
4．总结与展望 18
致谢 18
参考文献 19

摘要：本论文主要研究了泔水油的提取方法以及泔水转化为乙醇的发酵条件。实验通过对所采集的泔水成分进行了分析，对泔水油回收工艺以及糖化时间进行了研究，探讨了发酵培养基原料配比、泔水去油、添加纤维素酶、接种量对发酵得到的酒精度的影响，并进行了放大实验。结果表明：泔水加热到100℃, 4000转离心25分钟提取的油脂量最大，油脂抽取率达到91.18%，最佳糖化时间为35分钟，原料配比为：玉米粉28g,泔水25g,水47ml时酒精产量最高，酒精含量达到9.1%，去油后酒精产量增加，酒精含量达到10.37%，在纤维素酶添加量为0.05%时酒精产量最高，酒精含量达到10.77%，接种量为12%时酒精产量最高，酒精含量达到13.07%，放大实验效果最佳，酒精产量达到12.2%。
关键词：泔水，废油脂；发酵；酒精
 
A study on the re-use of food waste
Abstract: This paper studied the food waste oil extraction methods, as well as food waste into the initial conditions of ethanol fermentation. This project collected through food waste composition analysis of food waste oil recovery process as well as the time for the glycosylation study on the fermentation medium ratio of raw materials, to swill oil, add cellulase, inoculum for the fermentation of alcohol has been the impact of, and conducted experiments to enlarge. The results showed that: food waste heated to 100 ℃, 4000 centrifuge for 25 minutes to make the largest amount of oil, grease extraction rate of 91.18 %, the best saccharification time of 35 minutes, the ratio of raw materials as follows: corn flour 28g, swill 25g, when the water 47ml the highest yield of alcohol, alcohol content 9.1%, to increase oil output after the alcohol, the alcohol content reached 10.37 %, its adding in the 0.05% cellulose ethanol production when the highest alcohol content reached 10.77%, against 12% of alcohol production of the highest alcohol content reached 13.07 %, the best zoom in Experiment 1, alcohol production reached 12.2%.

Keywords：Food waste；Waste oils and fats；Fermentation；Ethan