Optimization of conversion via response surface methodology and kinetics of the sodium hydroxide-catalyzed methanolysis of Jatropha curcas L. seed oil

Date

4-2009

Degree

Bachelor of Science in Chemical Engineering

College

College of Engineering and Agro-Industrial Technology (CEAT)

Adviser/Committee Chair

Jovita L. Demafelis

Co-adviser

Laura J. Pham

Committee Member

Butch G. Battaler, Myra G. Borines,

Abstract

The response surface methodology (RSM) was used to optimize the conditions for the maximum conversion of Jatropha oil to biodiesel with a purity of at least 96.5%. Quadratic polynomial models were generated with the aid of Design Expert 7.1.6 to illustrate the significance of and interactions between Methanol to oil molar ratio, NaOH to oil molar ratio, reaction temperature and reaction time on biodiesel purity and oil to biodiesel conversion. The validity of the model was supported by regression analysis and was confirmed by verification experiments of the optimum point described bya methanol to oil molar ratio of 7.07, NaOH to oil molar ratio of 0.22, reaction temperature of 46.7C and reaction time of 1.51 hrs. The results of the verification experiment gave an average purity of 97.8984% and oil to biodiesel conversion of 91.106% in contrast to predicted values of 97.5951% and 90.4906% for purity and conversion, respectively. The kinetic parameters of the forward net transesterification reaction, run using the optimum conditions, were also evaluated by the integral method of analysis. The reaction proceeds with a pseudo-state order of 1.35 and a rate constant of 0.0629(%wt TG)⁻³⁵(min)⁻¹.

Language

English

Location

UPLB College of Engineering and Agro-Industrial Technology

Call Number

LG 993.5 2009 E62 P35

Document Type

Thesis

This document is currently not available here.

Share

COinS