| URN |
etd-0719112-135623 |
Statistics |
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|
| Author |
Ke-Chin Chang |
| Author's Email Address |
x54961231@gmail.com |
| Department |
Institute of construction technology |
| Year |
2011 |
Semester |
2 |
| Degree |
Master |
Type of Document |
Master's Thesis |
| Language |
zh-TW.Big5 Chinese |
Page Count |
105 |
| Title |
Extracting waste coffee grounds oil to produce biodiesel by two-stage transesterification process |
| Keyword |
free fatty acids
two-stage transesterification
biodiesel
coffee grounds
coffee grounds
biodiesel
two-stage transesterification
free fatty acids
|
| Abstract |
This study is to evaluate the feasibility of using coffee oil extracted by Soxhlet extractor from spent coffee grounds as raw material and reacted by two-stage transesterification for biodiesel production. Fatty acid methyl ester (FAME), a major ingredient of biodiesel, is successfully transesterified from high free fatty acids (FFA) coffee oil through two-stage transesterification process. In the reaction process, acid value was reduced to 0.06 mg KOH/g to prevent saponification. This study further analyzes the fatty acids in the coffee oil for its composition and acid value, followed by a series of tests to determine the maximum oil content test. Maximum conversion yield of 15.53% can be obtained under the condition of extraction time for 240 minutes and washing for 15 minutes. The study makes a comprehensive discussion of the appearance, color and smell of the coffee biodiesel. The coffee oil biodiesel is also analyzed to compare with the international standard specifications to verify its qualification as a feedstock of biodiesel. |
| Advisor Committee |
Yao- Chuan Lee - advisor
none - co-chair
none - co-chair
|
| Files |
indicate in-campus access at 1 years and off-campus access at 3 years |
| Date of Defense |
2012-06-20 |
Date of Submission |
2012-07-23 |
