Enhancement of Biohydrogen Production by Two-Stage Systems: Dark and Photofermentation

Keskin, Tuğba; Hallenbeck, Patrick C.

doi:10.1007/978-3-642-28418-2_10

Cited by 6 publications

(2 citation statements)

References 137 publications

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“…We may conceive of bioelectronic components fabricated with living bacteria. Such biodevices would be self‐powered (through H 2 production (Keskin & Hallenbeck, ) and photosynthesis) and capable of self‐healing in the presence of moisture and light.…”

Section: Discussionmentioning

confidence: 99%

Bioelectronics at graphene–biofilm interface: Schottky junction formation and capacitive transitions

et al. 2018

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We have used an interface of bacterial community and graphene that may provide a platform for tunable bioelectronic components. Graphene nanoplatelets were immobilized by using the establishment process of photosynthetic, purple non‐sulphur biofilm. While immobilized on metallic electrodes, DC current–voltage plot exhibited symmetric threshold voltage which is indicative of both‐way Schottky diode formation. The biomaterial itself demonstrated presence of convergence points in capacitive spectra on frequency axis, when AC amplitude was varied. Incorporation of graphene disrupted such points of convergence and increased the photopigment content in biofilms in response to it. Limiting the carbon source was found to diminish and ultimately reverse this effect. In summary, cross‐talk between the surface electron cloud of two‐dimensional (2D) graphene and biofilm, growing on a 2D surface, can lead to smart hybrid materials, which in turn can be exploited as bioelectronic components.

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Section: Discussionmentioning

confidence: 99%

Bioelectronics at graphene–biofilm interface: Schottky junction formation and capacitive transitions

et al. 2018

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“…As real benefits for carbon dioxide abatement can only be obtained if hydrogen is produced from renewable resources, a search is under way for sustainable and environmentally friendly hydrogen production routes and supply chains, such as processing of biomass or by-products derived from biomass-based industries [7,8]. One of the most interesting concepts of hydrogen production from biomass is the two-step fermentative process-dark fermentation followed by photofermentation-which has the advantage of moderate values of process parameters including pressure and temperature [9,10]. Molasses, a renewable by-product of sugar manufacturing from sugar beet or sugar cane, was identified as a suitable feedstock for hydrogen fermentation already a decade ago [11].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Two-Stage Fermentative Hydrogen Production from Sugar Beet Molasses

et al. 2019

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Fermentative hydrogen production from molasses—a renewable by-product of beet-sugar processing—was considered. Technical and economic evaluations were performed of a stand-alone production plant employing a two-step fermentation process (dark thermophilic fermentation and photofermentation) followed by an adsorption-based upgrading of the produced hydrogen gas. Using a state-of-the-art knowledge base and a mathematical model composed of mass and energy balances, as well as economic relationships, the process was simulated and equipment data were estimated, the hydrogen cost was calculated and a sensibility analysis was carried out. Due to high capital, operating and labor costs, hydrogen production cost was estimated at a rather high level of 32.68 EUR/kg, while the energy output in produced hydrogen was determined as 68% more than the combined input of the thermal and electric energy needed for plant operation. As the room for improvement of plant performance is limited, a perspective on the cost competitiveness of large-scale hydrogen production from fossil sources is unclear.

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Bioenergy from Microorganisms: An Overview

Hallenbeck

2014

Advances in Photosynthesis and Respiration

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Enhancement of Biohydrogen Production by Two-Stage Systems: Dark and Photofermentation

Cited by 6 publications

References 137 publications

Bioelectronics at graphene–biofilm interface: Schottky junction formation and capacitive transitions

Bioelectronics at graphene–biofilm interface: Schottky junction formation and capacitive transitions

Evaluation of the Two-Stage Fermentative Hydrogen Production from Sugar Beet Molasses

Bioenergy from Microorganisms: An Overview

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