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 (>7.5 g/L). These findings improve syngas biomethanation efficiency and suggest including a proper pH control before further scale-up.
Czech name
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Czech description
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Classification
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
20704 - Energy and fuels
Result continuities
Project
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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