dc.contributor.author | Jansen van Rensburg, T. | |
dc.contributor.author | Schabort, C.J. | |
dc.date.accessioned | 2020-02-27T12:13:47Z | |
dc.date.available | 2020-02-27T12:13:47Z | |
dc.date.issued | 2018 | |
dc.identifier.citation | Jansen van Rensburg, T. & Schabort, C.J. 2018. A comparison of batch extracted bio-oil and continuous hydrothermal liquefaction bio-oil using spent coffee grounds as biomass feedstock. 10th International Conference on Advances in Science, Engineering, Technology & Healthcare (ASETH-18), 19-20 Nov 2018, Cape Town, South Africa: 265-270. [https://doi.org/10.17758/EARES4.EAP1118262] | en_US |
dc.identifier.isbn | 978-81-938365-2-1 | |
dc.identifier.uri | http://hdl.handle.net/10394/34215 | |
dc.identifier.uri | https://www.eares.org/siteadmin/upload/8375EAP1118262.pdf | |
dc.identifier.uri | https://doi.org/10.17758/EARES4.EAP1118262 | |
dc.description.abstract | This study focuses on bio-oil obtained from spent
coffee grounds, either by reflux extraction or continuous
hydrothermal liquefaction. Spent coffee grounds was chosen as
feedstock for this study as it is available around the world and
considered a second generation feedstock, as it is a food waste.
The production of coffee in 2017 was more than 9.5 million tons,
which translates into an increase of 2.3% from 2016. A large
portion of coffee beans end up as spent coffee grounds during
the production of instant coffee, making this waste product an
ideal feedstock for the biofuel industry.
Spent coffee grounds was collected from a local coffee shop in
Potchefstroom and used as feedstock in the production and
extraction of bio-oil from the spent coffee grounds. Reflux
extraction was done on the dried spent coffee grounds using
hexane, ethanol and acetone as solvents. Different retention
times were investigated for each solvent and the yield of the oil
was reported. The maximum yield 11.7 wt% was obtained when
hexane was used as a solvent. Continuous hydrothermal
liquefaction was done using spent coffee grounds as a feedstock
and a bio-crude yield of 28.5 wt% was obtained. The average
higher heating value of the extracted oils was 39 MJ/kg, while
the higher heating value for the hydrothermal liquefaction oil
was a bit lower at 36 MJ/kg | en_US |
dc.language.iso | en | en_US |
dc.publisher | EARET | en_US |
dc.subject | Continuous hydrothermal liquefaction | en_US |
dc.subject | Reflux extraction | en_US |
dc.subject | Spent coffee grounds | en_US |
dc.title | A comparison of batch extracted bio-oil and continuous hydrothermal liquefaction bio-oil using spent coffee grounds as biomass feedstock | en_US |
dc.type | Presentation | en_US |
dc.contributor.researchID | 25100084 - Jansen van Rensburg, Tiaan | |
dc.contributor.researchID | 12380687 - Schabort, Cornelis Johannes | |