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Assessing the syngas biomethanation in anaerobic sludge digestion under different syngas loading rates and homogenisation

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22320%2F22%3A43924245" target="_blank" >RIV/60461373:22320/22:43924245 - isvavai.cz</a>

  • Result on the web

    <a href="https://www.sciencedirect.com/science/article/pii/S0016236122007888" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0016236122007888</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1016/j.fuel.2022.123929" target="_blank" >10.1016/j.fuel.2022.123929</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Assessing the syngas biomethanation in anaerobic sludge digestion under different syngas loading rates and homogenisation

  • Original language description

    Gasification offers digestate conversion into syngas, which can be metabolised to CH4 by a mixed anaerobic consortium. However, low gas-liquid mass transfer and CO presence can limit further scale-up. The present study assessed syngas biomethanation (55% H2, 45% CO) in a thermophilic lab-scale continuous anaerobic digester processing sewage sludge. Different syngas loading rates and mechanical stirring compared to pneumatic mixing were investigated. Results showed that anaerobic culture acclimation for CO utilisation is unnecessary. Moreover, the mechanical stirring replacement for the pneumatic system enhanced the gas-liquid mass transfer rate. Hence, the biological conversion of CO and H2 was improved by 30%. Nevertheless, increased pH to 8.6 resulted in acetic acid accumulation (&gt;7.5 g/L). These findings improve syngas biomethanation efficiency and suggest including a proper pH control before further scale-up.

  • 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

    20704 - Energy and fuels

Result continuities

  • Project

  • Continuities

    S - Specificky vyzkum na vysokych skolach

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

    Fuel

  • ISSN

    0016-2361

  • e-ISSN

    1873-7153

  • Volume of the periodical

    320

  • Issue of the periodical within the volume

    15 July 2022

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    8

  • Pages from-to

    123929

  • UT code for WoS article

    000806815600001

  • EID of the result in the Scopus database

    2-s2.0-85127207496