Emerging potential of spent coffee ground valorization for fuel pellet production in a biorefinery

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27240%2F22%3A10249885" target="_blank" >RIV/61989100:27240/22:10249885 - isvavai.cz</a>

Výsledek na webu

<a href="https://link.springer.com/content/pdf/10.1007/s10668-022-02361-z.pdf" target="_blank" >https://link.springer.com/content/pdf/10.1007/s10668-022-02361-z.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10668-022-02361-z" target="_blank" >10.1007/s10668-022-02361-z</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Emerging potential of spent coffee ground valorization for fuel pellet production in a biorefinery

Popis výsledku v původním jazyce

The global market for fuel pellets (FPs) has been steadily growing because of a shift to coal substitutes. However, sustainability and the availability of biomass are the main issues. Various kinds of bio-wastes can be valorized through cutting-edge technologies. In the coffee industry, a valuable organic waste called spent coffee grounds (SCGs) is generated in bulk. SCG can be divided into two components, namely spent coffee ground oil and defatted spent coffee grounds (DSCG). SCG and DSCG can be used to produce FPs with excellent higher heating values. This review highlights that burning FPs composed of 100% SCG is not feasible due to the high emission of NO R . Moreover, the combustion is accompanied by a rapid temperature drop due to incomplete combustion which leads to lower boiler combustion efficiencies and increased carbon monoxide emissions. This was because of the low pellet strength and bulk density of the FP. Mixing SCG with other biomass offers improved boiler efficiency and emissions. Some of the reported optimized FPs include 75% SCG+ 20% coffee silverskin, 30% SCG + 70% pine sawdust, 90% SCG+ 10% crude glycerol, 32% SCG+ 23% coal fines + 11% sawdust + 18% mielie husks + 10% waste paper + 6% paper pulp, and 50% SCG+ 50% pine sawdust. This review noted the absence of combustion and emissions analyses of DSCG and the need for their future assessment. Valorization of DSCG offers a good pathway to improve the economics of an SCG-based biorefinery where the extracted SCGO can be valorized in other applications. The combustion and emissions of DSCG were not previously reported in detail. Therefore, future investigation of DSCG in boilers is essential to assess the potential of this industry and improve its economics. [GRAPHICS] .

Název v anglickém jazyce

Emerging potential of spent coffee ground valorization for fuel pellet production in a biorefinery

Popis výsledku anglicky

The global market for fuel pellets (FPs) has been steadily growing because of a shift to coal substitutes. However, sustainability and the availability of biomass are the main issues. Various kinds of bio-wastes can be valorized through cutting-edge technologies. In the coffee industry, a valuable organic waste called spent coffee grounds (SCGs) is generated in bulk. SCG can be divided into two components, namely spent coffee ground oil and defatted spent coffee grounds (DSCG). SCG and DSCG can be used to produce FPs with excellent higher heating values. This review highlights that burning FPs composed of 100% SCG is not feasible due to the high emission of NO R . Moreover, the combustion is accompanied by a rapid temperature drop due to incomplete combustion which leads to lower boiler combustion efficiencies and increased carbon monoxide emissions. This was because of the low pellet strength and bulk density of the FP. Mixing SCG with other biomass offers improved boiler efficiency and emissions. Some of the reported optimized FPs include 75% SCG+ 20% coffee silverskin, 30% SCG + 70% pine sawdust, 90% SCG+ 10% crude glycerol, 32% SCG+ 23% coal fines + 11% sawdust + 18% mielie husks + 10% waste paper + 6% paper pulp, and 50% SCG+ 50% pine sawdust. This review noted the absence of combustion and emissions analyses of DSCG and the need for their future assessment. Valorization of DSCG offers a good pathway to improve the economics of an SCG-based biorefinery where the extracted SCGO can be valorized in other applications. The combustion and emissions of DSCG were not previously reported in detail. Therefore, future investigation of DSCG in boilers is essential to assess the potential of this industry and improve its economics. [GRAPHICS] .

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20700 - Environmental engineering

Projekt

<a href="/cs/project/LTI19002" target="_blank" >LTI19002: Zapojení českých výzkumných organizací do Evropské aliance pro energetický výzkum EERA (EERA-CZ 2)</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Environment, Development and Sustainability

ISSN

1387-585X

e-ISSN

1573-2975

Svazek periodika

2022

Číslo periodika v rámci svazku

may

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

39

Strana od-do

nestrankovano

Kód UT WoS článku

000789798900002

EID výsledku v databázi Scopus

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