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

Date

6-2016

Degree

Bachelor of Science in Chemical Engineering

College

College of Engineering and Agro-Industrial Technology (CEAT)

Adviser/Committee Chair

Myra G. Borines

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

This study focused on the extraction of petroleum nut oil using hexane as solvent. The effects of temperature, solvent-to-nut ratio and soaking time on the oil yield of the petroleum nut were determined using two-level factorial. The petroleum nuts used were dried for 12 hours at 55 °C to prolong its shelf life and to serve as a pretreatment for size reduction. Moisture content analysis of the dry petroleum nut was determined to have a value of 22.97% on dry basis. The parameters that had significant effect on the oil yield are solvent-to-nut [B], soaking time [C], interactions of the temperature and soaking time [AC} and interactions of soaking time and solvent to nut ratio [BC]. All significant factors had synergistic interaction on the oil yield except for the interaction of temperature and soaking time which has antagonistic interaction with oil yield. The highest oil yield was obtained at extraction condition 40 °C, 5:1 (v/w) mL/g solvent to nut ratio and 16 hrs soaking time. The efficiency of the flask level extraction was evaluated using the Soxhlet extraction. The conditions of the extraction in the Soxhlet method were set to 200 °C, 18:1 mL/g (v/w) solvent-to-nut ratio and 4 hours. The highest percent oil yield in flask-level solvent extraction was 8.84% while the percent oil yield in Soxhlet method was 32.17%. The percent difference between the two methods was 72.52%.

Language

English

Location

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

Call Number

LG 993.5 2016 E62 /M56

Document Type

Thesis

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