| Autor: |
Merve Visnyei, Péter Bakonyi, Tamás Rózsenberszki, László Koók, Péter Komáromy, Katalin Bélafi-Bakó, Nándor Nemestóthy |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
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| Zdroj: |
Chemical Engineering Journal Advances, Vol 18, Iss , Pp 100607- (2024) |
| Druh dokumentu: |
article |
| ISSN: |
2666-8211 |
| DOI: |
10.1016/j.ceja.2024.100607 |
| Popis: |
In this study, first, a fed-batch biogas fermenter was established using anaerobic digester sludge treating secondary sludge from a municipal wastewater treatment plant and operated for 120 days on glycerol as the sole substrate. Then, the prefiltered effluent of the anaerobic digester unit was loaded subsequently into a stirred-tank coupled with a hollow-fibre, polydimethylsiloxane (PDMS) gas-liquid membrane contactor and a dissolved methane sensor for studying the gas recovery process under continuous biogas supply, consisting of CH4 and CO2 in different proportions (70/30 CH4/CO2 vol.%; 50/50 CH4/CO2 vol.%; 30/70 CH4/CO2 vol.%.). Experiments showed that besides the actual composition of the internal biogas, the ratio (0.5–2) of sweep gas (N2) and effluent (liquid) volumetric flow rates (G/L) could be a crucial operating factor with influence on the degassing efficiency attainable by the 1 m2 PDMS membrane module. Results were compared to the performance of the same PDMS membrane module working with synthetic anaerobic digester effluents, indicating the dissolved methane recoveries observed with the synthetic effluents (>50 %) considerably surpassed those with the real effluent ( |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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