Parametric study on biodiesel oil extraction from chlorella vulgaris.

Date

2012

Degree

Bachelor of Science in Chemical Engineering

College

College of Engineering and Agro-Industrial Technology (CEAT)

Restrictions

Restricted: Not available to the general public. Access is available only after consultation with author/thesis adviser and only to those bound by the confidentiality agreement.

Abstract

Extraction of Chlorella vulgaris oil was investigated using hexane petroleum ether and chloroform at different biomass to solvent ratio (1:5, 1:10, and 1:15) and soaking time (12, 24 and 36 hours). Results showed that there is no significant difference among the oil yield from the different solvents. Also,increasing the biomass to solvent ratio and soaking time does not significantly increase the oil yield. These findings are not parallel to the general trend from the related studies that oil recovery increases as biomass to solvent ratio and soaking time increases. These deviation can be explained by the saturation of the extraction system at varying biomass to solvent ratio and soaking time since the control variable were at 36 hours and 1:15 g/mL, respectively. Hexane is recommended as an extraction solvent for Chlorella vulgaris oil since it is relatively inexpensive and less toxic than other solvent. In addition, thin layer chromatography is used for the analysis of the composition of the extracted Chlorella vulgaris oil. 25.81.18% triglyceride content and 11.67-62% free fatty acid content were obtained. Therefore, it can be used for biodiesel production. however, the presence of high levels of free fatty acids implies that pretreatment is needed to avoid saponification during biodiesel production.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

LG 993.5 2012 E62 D85

Document Type

Thesis

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