Article Per Year (5 Year)
p-Index From 2021 - 2026
0
P-Index
This Author published in this journals
All Journal International Journal of Science and Engineering (IJSE)
Renita Manurung
University of Sumatera Utara
Engineering

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
Effect of Concentration of Catalyst (BF3-Diethyl Etherate) on Synthesis of Polyester From Palm Fatty Acid Distillate (PFAD) Renita Manurung; Ahmad Rozi Tanjung; Ida Ayuningrum
International Journal of Science and Engineering Vol 5, No 2 (2013)
Publisher : Chemical Engineering Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (398.694 KB) | DOI: 10.12777/ijse.5.2.36-40

Abstract

Palm Fatty Acid Distillate (PFAD) can be used as raw material for synthesis polyester. The aim of this research is to synthesis of polyester and to determine the effect of concentration of catalyst on polymerization methyl ester PFAD. The esterification stage was done at temperature 70oC, reaction time 120 minute, reactant ratio 1:8 (PFAD: methanol), concentration of catalyst (H2SO4) 1% (w/w) PFAD; polymerization stage was done at temperature 126-132°C, polymerization reaction time 4 hours; variation of concentration of catalyst (BF3-diethyl etherate) 0%, 6.9%, 9.2%, 11.5% (w/w) methyl ester; and polyesterification stage was done at temperature 175-200 oC, reactant ratios (w/w) 1:1 (polymerized ME : ethylene glycol), reaction time 4 hours and all of stage was stirred at 150 rpm. The results showed, in the esterification stage was obtained methyl ester with iodine value 77.29 g I2/100 g, viscosity 6.90 cP, density 859.91 kg/m3 and analysis by using GC-MS showed that the purity of methyl ester was 82.23% and molecular weight 267.97 g/mol. Decreasing in iodine value from 77.29 I2 g/100 g to 74.97-59.99 g I2/100 g indicated that the polymerization process had taken place. In polyesterification stage was obtained light brown colored liquid for concentration of catalyst 0%; viscous, light brown colored liquid for concentration of catalyst 6.9%; and gel polyester, viscous, dark brown colored solid at room temperature for concentration of catalyst 9.2% and 11.5% with acid value from 8.19 to 26.14 mg KOH/g, viscosity from 0.07 to 15.2 P, and molecular weight 288.81 to 1522.07 g/mol which is more suitable for applications of modified polyester. Analysis by using GC showed that the purity of polyester is equal to 65.49%. Keywords— polyester, palm fatty acid distillate, polymerizationconcentration of catalyst,biodegradable polymer
Synthesis Biodiesel from Palm Oil Through Interesterification Using Imobilized Lipase Enzym as Catalyst: The Effect of Amount of Biocatalyst, Mole Ratio of Reactan, Temperature to Yield Melina Widyawati; Renita Manurung; Ricky Afrianto
International Journal of Science and Engineering Vol 7, No 2 (2014)
Publisher : Chemical Engineering Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (270.409 KB) | DOI: 10.12777/ijse.7.2.174-177

Abstract

Biodiesel usually synthesized by transesterification of triglyceride and alcohol by addition of acid or base catalyst so there is could produce a waste of chemical process. Alternative process is by using biocatalyst such as enzyme to synthesize biodiesel without chemical process waste. In this research, synthesis of biodiesel from Crude Palm Oil (CPO) that through the process of degumming and methyl acetate as acyl donor has been investigated with using Lipozyme as biocatalyst. Variables in this research are amount of biocatalyst, mole ratio of reactant, and temperature, and its respond to the yield conversion of biodiesel that presented by using Response Surface Methodology (RSM). Yield raging from 15% - 68% were achived during 10 hours reaction time. The results showed that the most influential variable is amount of biocatalyst.
Co-Authors Ahmad Rozi Tanjung Ida Ayuningrum Melina Widyawati Ricky Afrianto