Simulation of supercritical carbon dioxide extraction of lipid from spent coffee grounds

Yuswan Muharam, Muhammad Audry Ramadhany

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Lipids are an inexpensive and high-quality biodiesel raw material. They can be extracted fromspent coffee grounds. The purpose of this study is to obtain the effect of process parameters on the lipid extraction from spent coffee grounds using supercritical carbon dioxide. The hot sphere diffusion model with desorption as the limiting step of releasing solutes to the fluid phase has been used to obtain those parameter effects. The lipid yield increases with increasing pressure at the same temperature, and decreases with increasing temperature at the same pressure. An increase in the extractor height from 0.32 m to 1.5 m gives an increase in the yield from 1.52 grams to 8.32 grams at the same duration of the extraction. When the extractor height is doubled from 1,5 m, the yield reaches 12.28 grams. At the extraction with the particle size of 0.27 mm, the yield produced at 111th minute is 11.83%. The yield decreases to 8.39% when the particle size enlarges to 0.75 mm. The increase in the solvent flowrate from 0.0018 kg/min to 0.005 kg/min, then to 0.01 kg/min causes the lipid yield to increase continuously.

Original languageEnglish
Title of host publication5th International Tropical Renewable Energy Conference, i-TREC 2020
EditorsRidho Irwansyah, Muhammad Arif Budiyanto
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735441286
DOIs
Publication statusPublished - 23 Sep 2021
Event5th International Tropical Renewable Energy Conference, i-TREC 2020 - Depok, Indonesia
Duration: 29 Oct 202030 Oct 2020

Publication series

NameAIP Conference Proceedings
Volume2376
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference5th International Tropical Renewable Energy Conference, i-TREC 2020
Country/TerritoryIndonesia
CityDepok
Period29/10/2030/10/20

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