Strategies for improving biological hydrogen production

Hallenbeck, Patrick C.; Abo-Hashesh, Mona; Ghosh, Dipankar

doi:10.1016/j.biortech.2012.01.103

Cited by 277 publications

(87 citation statements)

References 56 publications

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“…The potential of exploiting these processes in various combinations have been reviewed to some extent [7][8][9][10]. However a large number of hurdles still seem to persist such as: (i) in the dark-fermentative process-(a) relatively lower H 2 yield (b) the need for strict anaerobic conditions for high H 2 producers, and (c) thermodynamic instability of the process at higher H 2 concentrations, and (ii) during the photo-fermentative process-(a) sensitivity of the H 2 production process to nitrogen content of the feed (b) effect to light intensity and duration of radiation under outdoor (sunlight) and indoor (artificial light sources) conditions, and (c) types of bioreactors required for H 2 production [2,[11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Integrative Biological Hydrogen Production: An Overview

Patel

Kalia

2012

Indian J Microbiol

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Biological hydrogen (H 2 ) production by dark and photo-fermentative organisms is a promising area of research for generating bioenergy. A large number of organisms have been widely studied for producing H 2 from diverse feeds, both as pure and as mixed cultures. However, their H 2 producing efficiencies have been found to vary (from 3 to 8 mol/mol hexose) with physiological conditions, type of organisms and composition of feed (starchy waste from sweet potato, wheat, cassava and algal biomass). The present review deals with the possibilities of enhancing H 2 production by integrating metabolic pathways of different organisms-dark fermentative bacteria (from cattle dung, activated sludge, Caldicellulosiruptor, Clostridium, Enterobacter, Lactobacillus, and Vibrio) and photo-fermentative bacteria (such as Rhodobacter, Rhodobium and Rhodopseudomonas). The emphasis has been laid on systems which are driven by undefined dark-fermentative cultures in combination with pure photo-fermentative bacterial cultures using biowaste as feed. Such an integrative approach may prove suitable for commercial applications on a large scale.

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Section: Introductionmentioning

confidence: 99%

Integrative Biological Hydrogen Production: An Overview

Patel

Kalia

2012

Indian J Microbiol

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“…Microbial conversion of substrate to H 2 and volatile fatty acid (VFA) [1][5] [6][7] [8]. Hydrogen production through anaerobic fermentation has advantages over the other processes because it has the potential to use wastewater and organic wastes [9].…”

Section: Introductionmentioning

confidence: 99%

Performance analysis of immobilized and co-immobilized enriched-mixed culture for hydrogen production

Damayanti¹,

Sarto²,

Sediawan³

et al. 2018

J. MECH. ENG. SCI.

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This paper presents an experimental investigation on using mixed culture for immobilization and co-immobilization for hydrogen production. The shape and diameter of the beads were investigated. Hydrogen was produced from 10 g.L 1 glucose in anaerobic batch using immobilized mixed culture with extrusion dripping method. The alginate concentrations as immobilization material were 1%, 2%, and 3%. The mixed culture had three different biodigester sources consisting of cow dung, tofu waste, and fruit waste. The pretreatment of each mixed culture was acidification and enrichment. Then the mixed culture were mixed with immobilization material and inserted into a syringe, then dropped into 0.1M CaCl 2 . Activated carbon was added to alginate (coimmobilization) with ratio 1:1. The results showed that bead using 1% and 2% alginate concentrations were a pear-shaped. The highest concentration of hydrogen (mol H 2 /mol glucose) was 0.029 for immobilized beads with 2% alginate concentration and the lowest hydrogen (molH 2 /mol glucose) was 0.009 for immobilized beads with 3% alginate concentration. Acetic acid was the most dominant.

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“…The vigorous increase in atmospheric content of greenhouse gas causes some environmental problems such as global warming and raise of ocean's water level [1]. CO 2 is considered as the major gaseous pollutant which is provided from burning fossil fuel.…”

Section: Introductionmentioning

confidence: 99%