Research on Biodiesel Production from Waste Sludge of Livestock Industry
Date Issued
2015
Date
2015
Author(s)
Hsieh, Cheng-Jer
Abstract
The cost of treating excess or waste sludge is about 20~50% of total wastewater treatment. Sewage sludge can be the feedstock of producing biodiesel, and it is fatty acid methyl ester (FAME) and a kind of renewable energy. The target of study is try to solve problem of excess livestock sludge by producing biodiesel and evaluates its feasibility by using waste livestock sludge including swine farm, dairy cattle farm and slaughterhouse sludge. These waste livestock sludge were used and produced FAME by acid-catalyst transesterification in this study. The waste sludge was de-watered by freeze-dried way and reacted with methanol to produce FAME. The test conditions were divided into four kinds of reaction time (4, 8, 16, and 24 h) with different ratios of methanol addition (10:1, 15:1, 25:1, and 40:1). All FAME yield and species were analyzed by gas chromatography. The FAME yield of slaughterhouse sludge, swine farm sludge, and cattle farm sludge was about 0.78~2.24, 0.14~0.35, and 1.41~2.18% (w/w), respectively. The oven-dried way (105℃, 12 h) was used and compared the yield with freeze-dried way under different reaction time (4 and 24 h) but other conditions were the same. The result showed there was significant difference in 4-h sets but no significant in 24-h sets. Compared with 10-min treatment by ultrasonic and non-treatment under different reaction time (2 and 4 h) but other conditions were the same. The result showed there was significant difference in 2-h or 4-h sets. The results showed reaction time, methanol addition, de-watering way, and treatment by ultrasonic had no effect on FAME composition but species of sludge would do. The dominant FAME species from livestock sludge is C15/C17/C18. Biodiesel production can be an alternative way to treat livestock waste sludge and recover resource from it.
Subjects
Waste sludge
Biodiesel
FAME
Transesterification
Freeze-dried
SDGs
Type
thesis
File(s)![Thumbnail Image]()
Loading...
Name
ntu-104-R02626020-1.pdf
Size
23.54 KB
Format
Adobe PDF
Checksum
(MD5):f0811758b089c23d382050688987230b