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

The result's identifiers

  • Result code in 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>

  • Result on the web

    <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>

Alternative languages

  • Result language

    angličtina

  • Original language name

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

  • Original language description

    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] .

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    20700 - Environmental engineering

Result continuities

  • Project

    <a href="/en/project/LTI19002" target="_blank" >LTI19002: The involvement of Czech research organizations in the Energy Research Alliance EERA</a><br>

  • Continuities

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

Others

  • Publication year

    2022

  • Confidentiality

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

Data specific for result type

  • Name of the periodical

    Environment, Development and Sustainability

  • ISSN

    1387-585X

  • e-ISSN

    1573-2975

  • Volume of the periodical

    2022

  • Issue of the periodical within the volume

    may

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    39

  • Pages from-to

    nestrankovano

  • UT code for WoS article

    000789798900002

  • EID of the result in the Scopus database