Integrated volarization of spent coffee grounds to biofuels
Biodiesel is a renewable energy source produced from natural oils and fats, and is being used as a substitute for petroleum diesel. The aim of this study was to investigate the potential of using spent coffee grounds for biodiesel production and its by-products to produce pelletized fuel, which is e...
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2014-06-01
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doaj-f0dea4cf85754a2cae7c8c38c3f0231a2020-11-24T23:58:11ZengGreen Wave Publishing of CanadaBiofuel Research Journal2292-87822292-87822014-06-011265695548Integrated volarization of spent coffee grounds to biofuelsMebrahtu Haile0Land resource management and environmental protection department, college of dry land agriculture and natural resource, Mekelle University, EthiopiaBiodiesel is a renewable energy source produced from natural oils and fats, and is being used as a substitute for petroleum diesel. The aim of this study was to investigate the potential of using spent coffee grounds for biodiesel production and its by-products to produce pelletized fuel, which is expected to help the biodiesel production process achieve zero waste. For this experiment, spent coffee grounds sample was collected from Kaldis coffee, Addis Ababa, Ethiopia. Extraction of the spent coffee grounds oil was then conducted using n-hexane, ether and mixture of isopropanol to hexane ratio (50:50 %vol), and resulted in oil yield of 15.6, 17.5 and 21.5 %w/w respectively. A two-step process was used in biodiesel production with conversion of about 82 %w/w. The biodiesel quality parameters were evaluated using the American Standard for Testing Material (ASTM D 6751). The major fatty acid compositions found by Gas chromatography were linoleic acid (37.6%), palmitic acid (39.8%), oleic (11.7%), and stearic acid (8.6%). In addition, solid waste remaining after oil extraction and glycerin ratio (glycerin content from 20-40%) was evaluated for fuel pellet (19.3-21.6 MJ/Kg) applications. Therefore, the results of this work could offer a new perspective to the production of biofuel from waste materials without growing plants and/or converting food to fuel.http://www.biofueljournal.com/pdf_5548_baac75f1fcdddc8d751ca925943bf2c3.htmlSpent coffee groundSpent coffee ground oilTransesterificationBiodieselPelletized fuel |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Mebrahtu Haile |
spellingShingle |
Mebrahtu Haile Integrated volarization of spent coffee grounds to biofuels Biofuel Research Journal Spent coffee ground Spent coffee ground oil Transesterification Biodiesel Pelletized fuel |
author_facet |
Mebrahtu Haile |
author_sort |
Mebrahtu Haile |
title |
Integrated volarization of spent coffee grounds to biofuels |
title_short |
Integrated volarization of spent coffee grounds to biofuels |
title_full |
Integrated volarization of spent coffee grounds to biofuels |
title_fullStr |
Integrated volarization of spent coffee grounds to biofuels |
title_full_unstemmed |
Integrated volarization of spent coffee grounds to biofuels |
title_sort |
integrated volarization of spent coffee grounds to biofuels |
publisher |
Green Wave Publishing of Canada |
series |
Biofuel Research Journal |
issn |
2292-8782 2292-8782 |
publishDate |
2014-06-01 |
description |
Biodiesel is a renewable energy source produced from natural oils and fats, and is being used as a substitute for petroleum diesel. The aim of this study was to investigate the potential of using spent coffee grounds for biodiesel production and its by-products to produce pelletized fuel, which is expected to help the biodiesel production process achieve zero waste. For this experiment, spent coffee grounds sample was collected from Kaldis coffee, Addis Ababa, Ethiopia. Extraction of the spent coffee grounds oil was then conducted using n-hexane, ether and mixture of isopropanol to hexane ratio (50:50 %vol), and resulted in oil yield of 15.6, 17.5 and 21.5 %w/w respectively. A two-step process was used in biodiesel production with conversion of about 82 %w/w. The biodiesel quality parameters were evaluated using the American Standard for Testing Material (ASTM D 6751). The major fatty acid compositions found by Gas chromatography were linoleic acid (37.6%), palmitic acid (39.8%), oleic (11.7%), and stearic acid (8.6%). In addition, solid waste remaining after oil extraction and glycerin ratio (glycerin content from 20-40%) was evaluated for fuel pellet (19.3-21.6 MJ/Kg) applications. Therefore, the results of this work could offer a new perspective to the production of biofuel from waste materials without growing plants and/or converting food to fuel. |
topic |
Spent coffee ground Spent coffee ground oil Transesterification Biodiesel Pelletized fuel |
url |
http://www.biofueljournal.com/pdf_5548_baac75f1fcdddc8d751ca925943bf2c3.html |
work_keys_str_mv |
AT mebrahtuhaile integratedvolarizationofspentcoffeegroundstobiofuels |
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