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Abstract
Crude glycerol is an important by-product of the biodiesel industry, which can be converted into volatile fatty acids (VFA) and/or 1,3-propanediol (1,3-PDO) by fermentation. In this study, a selective conversion of VFA to polyhydroxyalkanoates (PHA) was attained while leaving 1,3-PDO in the supernatant by means of mixed microbial consortia selection strategies. The process showed highly reproducible results in terms of PHA yield, 0.99 ± 0.07 Cmol PHA/Cmol S (0.84 g COD PHA/g COD S), PHA content (76 ± 3.1 g PHA/100 g TSS) and 1,3-PDO recovery (99 ± 2.1%). The combined process had an ultimate yield from crude glycerol of 0.19 g COD PHA and 0.42 g COD 1,3-PDO per g of input COD. The novel enrichment strategy applied for selectively transforming fermentation by-products into a high value product (PHA) demonstrates the significance of the enrichment process for targeting specific bio-transformations and could potentially prove valuable for other biotechnological applications as well.
Originalsprog | Engelsk |
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Tidsskrift | Water Research |
Vol/bind | 136 |
Sider (fra-til) | 180-191 |
Antal sider | 12 |
ISSN | 0043-1354 |
DOI | |
Status | Udgivet - 1 jun. 2018 |
Udgivet eksternt | Ja |
Fingeraftryk
Dyk ned i forskningsemnerne om 'Combined polyhydroxyalkanoates (PHA) and 1,3-propanediol production from crude glycerol: Selective conversion of volatile fatty acids into PHA by mixed microbial consortia'. Sammen danner de et unikt fingeraftryk.Projekter
- 1 Afsluttet
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GRAIL: Glycerol bioRefiney Approach for the production of high quality products of Industrial value
01/11/2013 → 31/10/2017
Projekter: Projekt › Forskning