Photo-fermentative hydrogen production from mixed substrate by mixed bacteria

Wang, Ruiqing, Cui, Chongwei, Jin, Yaruo, Liu, Bingfeng, Xing, Defeng, Xie, Guojun and Ren, Nanqi (2014). Photo-fermentative hydrogen production from mixed substrate by mixed bacteria. In: CHEC2013 special section. 14th China Hydrogen Energy Conference (CHEC 2013), Shanghai, China, (13396-13400). 25-28 September 2013. doi:10.1016/j.ijhydene.2014.04.097

Author Wang, Ruiqing
Cui, Chongwei
Jin, Yaruo
Liu, Bingfeng
Xing, Defeng
Xie, Guojun
Ren, Nanqi
Title of paper Photo-fermentative hydrogen production from mixed substrate by mixed bacteria
Conference name 14th China Hydrogen Energy Conference (CHEC 2013)
Conference location Shanghai, China
Conference dates 25-28 September 2013
Proceedings title CHEC2013 special section   Check publisher's open access policy
Journal name International Journal of Hydrogen Energy   Check publisher's open access policy
Place of Publication Camden, London, United Kingdom
Publisher Elsevier
Publication Year 2014
Year available 2014
Sub-type Fully published paper
DOI 10.1016/j.ijhydene.2014.04.097
Open Access Status Not yet assessed
ISSN 0360-3199
Volume 39
Issue 25
Start page 13396
End page 13400
Total pages 5
Language eng
Abstract/Summary Photo-fermentative H2 production by mixed bacteria and pure bacterium Rhodopseudomonas faecalis RLD-53 using single and mixed substrate as carbon source was investigated in batch culture. Experimental results showed that 60 mmol/L acetate was the optimal concentration for mixed bacterial H 2 production and maximum cumulative H2 volume was 2468 ± 123 mL H2/L-culture. It was also found that propionate or butyrate was a key factor for enhancing H2 production in mixed substrate system. Photo-H2 production can be greatly promoted when proper concentration of propionate and butyrate were added into acetate medium as mixed substrate and a higher H2 yield of 2931 ± 146 mL H2/L-culture was obtained. In addition, it was worth noting that when the strain RLD-53 was added into mixed bacteria with different concentration ratios, H2 yield did not yet increase. Interestingly, H2 production capacity gradually decreased with ratio of strain RLD-53 to mixed bacteria from 8:0 to 4:4, and then gradually increased from 4:4 to 0:8. This implied that the competition relationship between strain RLD-53 and mixed bacteria in substrate utilization strongly influenced their H2 production.
Keyword Hydrogen production
Mixed bacteria
Mixed substrate
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

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