The pelletization and torrefaction of coffee grounds, garden chaff and rapeseed straw

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27230%2F23%3A10252930" target="_blank" >RIV/61989100:27230/23:10252930 - isvavai.cz</a>
Alternative codes found
RIV/61989100:27350/23:10252930 RIV/61989100:27730/23:10252930
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0960148123004640?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0960148123004640?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.renene.2023.04.016" target="_blank" >10.1016/j.renene.2023.04.016</a>

Result language
angličtina
Original language name
The pelletization and torrefaction of coffee grounds, garden chaff and rapeseed straw
Original language description
Waste biomass pelletization is a suitable process for obtaining energy dense solid fuel. If the pellets are further processed by torrefaction, both their qualitative and energy parameters are changed. Therefore, the objective of this study is to investigate the effect of the torrefaction process on pellets made from coffee grounds, garden chaff and rapeseed straw. Mechanical parameters, such as the pellet durability index, the wettability index of the pellets, their water moisture resistance, hardness, or specific and bulk density were determined for evaluation. Furthermore, pellet energy parameters such as the heat of combustion, calorific value, or elemental analysis were compared. Pelletization of the above-mentioned waste biomass and the torrefaction of the pellets were carried out in pilot plants. The first results showed that the torrefaction process for all samples increased the values of the heat of combustion or the values of the carbon content. The energy value of the pellets increases. The higher heating value of torrefied coffee ground pellets reached 26 MJ kgMINUS SIGN 1. The ash content also increases with these values. A simple energy balance has been carried out.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20700 - Environmental engineering

Project
<a href="/en/project/EF16_019%2F0000753" target="_blank" >EF16_019/0000753: Research centre for low-carbon energy technologies</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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