Improving effect of metal and oxide nanoparticles encapsulated in porous silica on fermentative biohydrogen production by Clostridium butyricum.

Genome-wide transcriptional analysis suggests hydrogenase- and nitrogenase-mediated hydrogen production in Clostridium butyricum CWBI 1009

BACKGROUND Molecular hydrogen, given its pollution-free combustion, has great potential to replace fossil fuels in future transportation and energy production. However, current industrial hydrogen production processes, such as steam reforming of methane, contribute significantly to the greenhouse effect. Therefore alternative methods, in particular the use of fermentative microorganisms, have a...

Fermentative hydrogen production by Clostridium butyricum CWBI1009 and Citrobacter freundii CWBI952 in pure and mixed cultures

This paper investigates the biohydrogen production by two mesophilic strains, a strict anaerobe (Clostridium butyricum CWBI1009) and a facultative anaerobe (Citrobacter freundii CWBI952). They were cultured in pure and mixed cultures in serum bottles with five different carbon sources. The hydrogen yields of pure C. freundii cultures ranged from 0.09 molH2. molhexose -1 (with sucrose) to 0.24 m...

Investigation of the links between mass transfer conditions, dissolved hydrogen concentration and biohydrogen production by the pure strain Clostridium butyricum CWBI1009

Fermentative hydrogen production from glucose and starch using pure strains and artificial co-cultures ofClostridium spp.

BACKGROUND Pure bacterial strains give better yields when producing H2 than mixed, natural communities. However the main drawback with the pure cultures is the need to perform the fermentations under sterile conditions. Therefore, H2 production using artificial co-cultures, composed of well characterized strains, is one of the directions currently undertaken in the field of biohydrogen research...

Mesophilic biohydrogen production by Clostridium butyricum CWBI 1009 in 1 trickling biofilter reactor

14 This study investigates the mesophilic biohydrogen production from glucose using a strictly 15 anaerobic strain, Clostridium butyricum CWBI1009, immobilized in a trickling bed sequenced 16 batch reactor (TBSBR) packed with a Lantec HD Q-PAC ® packing material (132 ft2/ft3 specific 17 surface). The reactor was operated for 62 days. The main parameters measured here were 18 hydrogen compositio...