Parametric study on binary solvent extraction of oil from petroleum nut (Pittosporum resiniferum Hemsl.) using hexane and ethanol

Date

6-2017

Degree

Bachelor of Science in Chemical Engineering

College

College of Engineering and Agro-Industrial Technology (CEAT)

Adviser/Committee Chair

Maria Victoria P. Migo

Restrictions

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

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Abstract

Petroleum nut is a good source of essential oils which can be used for medicinal, therapeutic, and other purposes. A parametric study on binary solvent extraction of oil from petroleum nuts using hexane and ethanol was conducted. Ethanol-hexane ratio (1:1, 5:1), solvent-to-nut ratio(2:1, 6:1) and agitation time (30, 120 min) were the parameters considered in this study. Design Expert was used to formulate the 2k factorial experimental runs and for statistical analyses. Based on the experimental runs, the highest percent oil yield was 13.06%, given by the parameter combination 1:1 ethanol-hexane ratio, 6:1 solvent-to-nut ratio and 120 min of agitation. Soxhlet extraction was performed with parameters 1:1 ethanol-hexane ratio, 18:1 solvent-to-nut ratio, 8 hours of extraction time and 200 celsius which resulted to 34.10% percent oil yield. The percent oil recovery obtained was 38.30% based on maximum recoverable oil from the nut. This implies that there are still extractable components in petroleum nuts that can be recovered. The design model was insignificant with a p-value of 0.3203. The ethanol-hexane ratio was insignificant because petroleum nut oil components are soluble to both polar and non-polar solvents. Solvent-to-nut ratio and agitation time were also insignificant which may be due to narrow range chosen. Hence, further experiments are recommended to verify whether these factors are indeed insignificant using wider range of low and high values.

Language

English

LC Subject

Pittosporum, Oil sands extraction plants, Hexane, Ethanol, Petroleum, Nut trees

Location

UPLB College of Engineering and Agro-Industrial Technology (CEAT)

Call Number

LG 993.5 2017 E62

Document Type

Thesis

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