期刊名称：Lecture Notes in Engineering and Computer Science
印刷版ISSN：2078-0958
电子版ISSN：2078-0966
出版年度：2018
卷号：2235&2236
页码：462-466
出版社：Newswood and International Association of Engineers
摘要：A study on the influence of biodiesel prepared
from fresh and used oils on the corrosion behavior of ferritic
stainless steel was investigated. Esterification process was
employed in this work to reduce the free fatty acids present in
these samples and further trans-esterified to produce biodiesel.
The properties of produced samples of biodiesel such as
American Petroleum Institute (API), viscosity, flash point, acid
value, cloud point, and pour point were investigated and
compared. The cloud points, pour points and flash points of the
samples of biodiesel from vegetable oil were lower compared to
those obtained from corn oil samples. The analysis of the results
show that the acid values of biodiesel from corn oils were lower
than those of vegetable oils, while the biodiesel samples from
fresh corn oil exhibited lowest viscosity at both lower and
higher temperatures. The API gravity values for all the samples
studied were 33.11, 34.97, 33.22, and 33.88 for biodiesel from
fresh corn oil, waste corn oil, fresh vegetable oil and waste
vegetable oil, respectively. The corrosion study was investigated
by immersion technique at 30 oC and 60oC for 30 days. At 60oC,
the biodiesel produced from used vegetable oil was more
corrosive compared to other biodiesel samples. However, at
30oC, fresh vegetable oil was most corrosive. The results
obtained also show that ion diffusion controlled the oxidation
steps during the corrosion process.
