"Parametric study on the production of methyl ester biodiesel from Jatr" by Dee Jay V. Cerico

Parametric study on the production of methyl ester biodiesel from Jatropha curcas L. oil base-catalyze transesterification using two- stage batch process

Date

4-2010

Degree

Bachelor of Science in Chemical Engineering

College

College of Engineering and Agro-Industrial Technology (CEAT)

Adviser/Committee Chair

Rex B. Demafelis

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Abstract

Different ways of conducting two-stage transesterification were investigated. A ternary phase diagram of FAME-jatropha oil-methanol system was generated at 53.7 oC and used as one of the bases in determining the time appropriate for the start of the second stage of two-stage transesterification. Two- stage transesterification was done in two ways – without glycerol separation and with glycerol separation before the second stage started. For two-stage transesterification without glycerol separation, an oil-to- ester conversion of 90.39% was achieved 20 minutes after the second stage started when oil was added to the reaction mixture at the second stage. This corresponded to resulting total oil to remaining methanol molar ratio of 1:12 at the start of second stage, reaction temperature of 53.7 oC, and total transesterification reaction time of 40 minutes. Volume of biodiesel produced was increased to 56.76 % of the volume of biodiesel produced using single-stage transesterification with 1:6.89:0.2 oil to methanol to NaOH molar ratio at the start of first stage. For two-stage transesterification with glycerol separation, an oil-to-ester conversion of 90.06 % was achieved 20 minutes after the second stage started when methanol and methoxide was added in the second stage. This corresponded to remaining oil to added methanol molar ratio of 1:4 at the start of second stage, reaction temperature of 53.7 oC, and total transesterification reaction time of 30 minutes. Volume of biodiesel produced was increased to 52.05 % of the volume of biodiesel produced using single-stage transesterification with 1:6.89:0.2 oil to methanol to NaOH molar ratio at the start of first stage.

Language

English

Location

UPLB College of Engineering and Agro-Industrial Technology

Notes

Different ways of conducting two-stage transesterification were
investigated. A ternary phase diagram of FAME-jatropha oil-methanol system
was generated at 53.7 oC and used as one of the bases in determining the time

appropriate for the start of the second stage of two-stage transesterification. Two-
stage transesterification was done in two ways – without glycerol separation and

with glycerol separation before the second stage started.

For two-stage transesterification without glycerol separation, an oil-to-
ester conversion of 90.39% was achieved 20 minutes after the second stage

started when oil was added to the reaction mixture at the second stage. This
corresponded to resulting total oil to remaining methanol molar ratio of 1:12 at
the start of second stage, reaction temperature of 53.7 oC, and total
transesterification reaction time of 40 minutes. Volume of biodiesel produced was
increased to 56.76 % of the volume of biodiesel produced using single-stage
transesterification with 1:6.89:0.2 oil to methanol to NaOH molar ratio at the start
of first stage.
For two-stage transesterification with glycerol separation, an oil-to-ester
conversion of 90.06 % was achieved 20 minutes after the second stage started
when methanol and methoxide was added in the second stage. This corresponded
to remaining oil to added methanol molar ratio of 1:4 at the start of second stage,
reaction temperature of 53.7 oC, and total transesterification reaction time of 30
minutes. Volume of biodiesel produced was increased to 52.05 % of the volume
of biodiesel produced using single-stage transesterification with 1:6.89:0.2 oil to
methanol to NaOH molar ratio at the start of first stage.

Document Type

Thesis

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