| Title |
Fatty acids production from hydrogen and carbon dioxide by mixed culture in the membrane biofilm reactor |
| ID_Doc |
8595 |
| Authors |
Zhang, F; Ding, J; Zhang, Y; Chen, M; Ding, ZW; van Loosdrecht, MCM; Zeng, RJ |
| Title |
Fatty acids production from hydrogen and carbon dioxide by mixed culture in the membrane biofilm reactor |
| Year |
2013 |
| Published |
Water Research, 47.0, 16 |
| DOI |
10.1016/j.watres.2013.07.033 |
| Abstract |
Gasification of waste to syngas (H-2/CO2) is seen as a promising route to a circular economy. Biological conversion of the gaseous compounds into a liquid fuel or chemical, preferably medium chain fatty acids (caproate and caprylate) is an attractive concept. This study for the first time demonstrated in-situ production of medium chain fatty acids from H-2 and CO2 in a hollow-fiber membrane biofilm reactor by mixed microbial culture. The hydrogen was for 100% utilized within the biofilms attached on the outer surface of the hollow-fiber membrane. The obtained concentrations of acetate, butyrate, caproate and caprylate were 7.4, 1.8, 0.98 and 0.42 g/L, respectively. The biomass specific production rate of caproate (31.4 mmol-C/(L day g-biomass)) was similar to literature reports for suspended cell cultures while for caprylate the rate (19.1 mmol-C/(L day g-biomass)) was more than 6 times higher. Microbial community analysis showed the biofilms were dominated by Clostridium spp., such as Clostridium ljungdahlii and Clostridium kluyveri. This study demonstrates a potential technology for syngas fermentation in the hollow-fiber membrane biofilm reactors. (C) 2013 Elsevier Ltd. All rights reserved. |
| Author Keywords |
Syngas fermentation; In-situ hydrogen utilization; Fatty acids; Mixed culture; Hollow-fiber membrane biofilm reactor |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:000326910000016 |
| WoS Category |
Engineering, Environmental; Environmental Sciences; Water Resources |
| Research Area |
Engineering; Environmental Sciences & Ecology; Water Resources |
| PDF |
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