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Title:Primernost ostankov mlete kave za proizvodnjo peletov
Authors:ID Gornik Bučar, Dominika (Author)
ID Prislan, Peter (Author)
ID Verhovšek, Dejan (Author)
ID Gospodarič, Bojan (Author)
Files:URL URL - Source URL, visit https://journals.uni-lj.si/les-wood/article/view/18619
 
.pdf PDF - Presentation file, download (2,37 MB)
MD5: B3C1EA3E44B0D073B88F941167C7A735
 
Language:Slovenian
Typology:1.01 - Original Scientific Article
Organization:Logo SciVie - Slovenian Forestry Institute
Abstract:Za doseganje cilja evropske energetsko-podnebne politike, da do leta 2050 dosežemo podnebno nevtralnost s prehodom na obnovljive vire energije, je potrebno aktivirati različne razpoložljive obnovljive vire, vključno z biološkimi ostanki oz. odpadki. Eden od takih bioloških odpadkov, ki nastaja v velikih količinah in se večinoma nepredelan odlaga v okolje, so ostanki mlete kave. Ker ostanke mlete kave sestavljajo celuloza, hemiceluloza, lignin in proteini, predstavljajo velik potencial tudi kot biogorivo, ki lahko delno nadomesti lesno biomaso pri proizvodnji peletov. V raziskavi smo v laboratorijskih pogojih izdelali pelete iz ostankov mlete kave, ki smo jim dodali različne deleže (0 %, 25 %, 50 %, 75 %) žagovine. Izdelanim peletom smo določili lastnosti in jih glede na izmerjene vrednosti razvrstili v kakovostne razrede po standardu SIST EN ISO 17225-6:2021. Ugotovili smo, da imajo peleti z večjim deležem ostankov mlete kave višjo kurilno vrednost, večjo vsebnost pepela ter nižjo mehansko obstojnost. Peleti, izdelani iz ostankov mlete kave in dodatkom žagovine (50 % ali več), izkazujejo obetavne lastnosti kot vhodna surovina za proizvodnjo peletov.
Keywords:peleti, ostanki mlete kave, žagovina, biološki odpadki, kurilna vrednost, kakovost peletov
Publication status:Published
Publication version:Version of Record
Publication date:01.01.2024
Year of publishing:2024
Number of pages:str. 69-80
Numbering:Let. 73, št. 1
PID:20.500.12556/DiRROS-21464 New window
UDC:630*839.81:663.938.4
ISSN on article:2590-9932
DOI:10.26614/les-wood.2024.v73n01a06 New window
COBISS.SI-ID:200904451 New window
Note:Nasl. z nasl. zaslona; Opis vira z dne 5. 7. 2024;
Publication date in DiRROS:10.02.2025
Views:591
Downloads:313
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Record is a part of a journal

Title:Les
Publisher:Biotehniška fakulteta, Oddelek za lesarstvo, Biotehniška fakulteta, Oddelek za lesarstvo, Založba Univerze
ISSN:2590-9932
COBISS.SI-ID:290940672 New window

Document is financed by a project

Funder:ARIS - Slovenian Research and Innovation Agency
Project number:P4-0015-2020
Name:Les in lignocelulozni kompoziti
Funder:ARIS - Slovenian Research and Innovation Agency
Project number:P4-0107-2020
Name:Gozdna biologija, ekologija in tehnologija
Funder:ARIS - Slovenian Research and Innovation Agency
Project number:P2-0182-2019
Name:Razvojna vrednotenja

Licences

License:CC BY-NC 4.0, Creative Commons Attribution-NonCommercial 4.0 International
Link:http://creativecommons.org/licenses/by-nc/4.0/
Description:A creative commons license that bans commercial use, but the users don’t have to license their derivative works on the same terms.

Secondary language

Language:English
Title:Suitability of spent ground coffee for pellet production
Abstract:In order to achieve the European energy and climate policy goal of climate neutrality by 2050, it is necessary to activate various available renewable energy sources, including biological residues or waste. One such biological waste, which is produced in large quantities and usually enters the environment unprocessed, is spent ground coffee. As spent ground coffee consist of cellulose, hemicellulose, lignin and proteins, it has great potential as a biofuel, and could partially replace wood biomass in the production of pellets. In our research, we have produced pellets under laboratory conditions from spent ground coffee to which we have added different proportions (0%, 25%, 50%, 75%) of sawdust. We determined the properties of the pellets and categorized them into quality classes based on the measured values according to the SIST EN ISO 17225-6:2021 standard. We found that pellets with a higher proportion of spent ground coffee residues have a higher calorific value, higher ash content and lower mechanical durability. Pellets made from spent ground coffee residues with the addition of sawdust (50% or more) show promising properties for use as a raw material for pellet production.In order to achieve the European energy and climate policy goal of climate neutrality by 2050, it is necessary to activate various available renewable energy sources, including biological residues or waste. One such biological waste, which is produced in large quantities and usually enters the environment unprocessed, is spent ground coffee. As spent ground coffee consist of cellulose, hemicellulose, lignin and proteins, it has great potential as a biofuel, and could partially replace wood biomass in the production of pellets. In our research, we have produced pellets under laboratory conditions from spent ground coffee to which we have added different proportions (0 %, 25 %, 50 %, 75 %) of sawdust. We determined the properties of the pellets and categorized them into quality classes based on the measured values according to the SIST EN ISO 17225-6:2021 standard. We found that pellets with a higher proportion of spent ground coffee residues have a higher calorific value, higher ash content and lower mechanical durability. Pellets made from spent ground coffee residues with the addition of sawdust (50 % or more) show promising properties for use as a raw material for pellet production.
Keywords:pellets, spent coffee grounds, sawdust, bio waste, calorific value, pellets quality


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