Till sidans topp

Sidansvarig: Webbredaktion
Sidan uppdaterades: 2012-09-11 15:12

Tipsa en vän
Utskriftsversion

Response to starvation an… - Göteborgs universitet Till startsida
Webbkarta
Till innehåll Läs mer om hur kakor används på gu.se

Response to starvation and microbial community composition in microbial fuel cells enriched on different electron donors

Artikel i vetenskaplig tidskrift
Författare S. Saheb-Alam
F. Persson
B. M. Wilen
Malte Hermansson
O. Modin
Publicerad i Microbial Biotechnology
Volym 12
Nummer/häfte 5
Sidor 962-975
ISSN 1751-7915
Publiceringsår 2019
Publicerad vid Institutionen för kemi och molekylärbiologi
Sidor 962-975
Språk en
Länkar dx.doi.org/10.1111/1751-7915.13449
Ämnesord waste-water treatment, electricity-generation, hydrogen, diversity, glucose, power, electrochemistry, similarity, resistance, overshoot, Biotechnology & Applied Microbiology, Microbiology
Ämneskategorier Mikrobiologi

Sammanfattning

In microbial fuel cells (MFCs), microorganisms generate electrical current by oxidizing organic compounds. MFCs operated with different electron donors harbour different microbial communities, and it is unknown how that affects their response to starvation. We analysed the microbial communities in acetate- and glucose-fed MFCs and compared their responses to 10 days starvation periods. Each starvation period resulted in a 4.2 +/- 1.4% reduction in electrical current in the acetate-fed MFCs and a 10.8 +/- 3.9% reduction in the glucose-fed MFCs. When feed was resumed, the acetate-fed MFCs recovered immediately, whereas the glucose-fed MFCs required 1 day to recover. The acetate-fed bioanodes were dominated by Desulfuromonas spp. converting acetate into electrical current. The glucose-fed bioanodes were dominated by Trichococcus sp., functioning as a fermenter, and a member of Desulfuromonadales, using the fermentation products to generate electrical current. Suspended biomass and biofilm growing on non-conductive regions within the MFCs had different community composition than the bioanodes. However, null models showed that homogenizing dispersal of microorganisms within the MFCs affected the community composition, and in the glucose-fed MFCs, the Trichococcus sp. was abundant in all locations. The different responses to starvation can be explained by the more complex pathway requiring microbial interactions to convert glucose into electrical current.

Sidansvarig: Webbredaktion|Sidan uppdaterades: 2012-09-11
Dela:

På Göteborgs universitet använder vi kakor (cookies) för att webbplatsen ska fungera på ett bra sätt för dig. Genom att surfa vidare godkänner du att vi använder kakor.  Vad är kakor?