Synergy of anoxic microenvironment and facultative anaerobes on acidogenic metabolism in a self-induced electrofermentation system
Copyright © 2020 Elsevier Ltd. All rights reserved..
Metabolic potential of two different cultures, facultative (FB) and strict anaerobes (AB) under two microenvironments [anoxic (ANOX) and anaerobic (ANA)] was evaluated to understand acidogenic fermentation in a self-induced electrofermentation (EF) system for the production of short-chain fatty acids (SCFA: C2-C4) and biogas. ANA condition positively influenced FB and AB metabolism towards higher acetic (C2:2390 mg/L) and propionic acid (C3: 717 mg/L) production, while butyric acid (C4:1481 mg/L) favored ANOX microenvironment (AB). ANOX microenvironment showed a better self-induced potential compared to ANA metabolism (0.46 V (FBANOX); 0.45 V (ABANOX)). An improved H2 (>30%) fraction was noticed with FB while CH4 production was found favourable with AB. The study illustrated the role of system microenvironment in association with metabolic function towards regulating electrofermentation towards specific products synthesis.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2020 |
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| Erschienen: |
2020 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:313 |
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| Enthalten in: |
Bioresource technology - 313(2020) vom: 15. Okt., Seite 123604 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Sarkar, Omprakash [VerfasserIn] |
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| Links: |
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| Themen: |
Acids |
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| Anmerkungen: |
Date Completed 22.07.2020 Date Revised 22.07.2020 published: Print-Electronic Citation Status MEDLINE |
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| doi: |
10.1016/j.biortech.2020.123604 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| 520 | |a Metabolic potential of two different cultures, facultative (FB) and strict anaerobes (AB) under two microenvironments [anoxic (ANOX) and anaerobic (ANA)] was evaluated to understand acidogenic fermentation in a self-induced electrofermentation (EF) system for the production of short-chain fatty acids (SCFA: C2-C4) and biogas. ANA condition positively influenced FB and AB metabolism towards higher acetic (C2:2390 mg/L) and propionic acid (C3: 717 mg/L) production, while butyric acid (C4:1481 mg/L) favored ANOX microenvironment (AB). ANOX microenvironment showed a better self-induced potential compared to ANA metabolism (0.46 V (FBANOX); 0.45 V (ABANOX)). An improved H2 (>30%) fraction was noticed with FB while CH4 production was found favourable with AB. The study illustrated the role of system microenvironment in association with metabolic function towards regulating electrofermentation towards specific products synthesis | ||
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