Potential use of thermophilic dark fermentation effluents in photofermentative hydrogen production by Rhodobacter capsulatus

Özgür, Ebru; Afsar, N.; Vrije, G.J. de; Yucel, Meral; Gündüz, Ufuk; Claassen, P.A.M.; Eroğlu, İnci

doi:10.1016/j.jclepro.2010.02.020

Cited by 86 publications

(15 citation statements)

References 42 publications

(37 reference statements)

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“…Among the defined dark fermentative bacteria, C. butyricum alone or in association with E. aerogenes was quite consistent in yielding 7-8 mol H 2 /mol hexose, along with R. sphaeroides as the photo-fermentative partner [31,59]. H 2 yields did not vary when R. capsulatus was used in association with a wide range of dark-fermentative H 2 -producers [47,51,57,58,60]. In contrast to R. sphaeroides, the combination of C. butyricum and R. palustris did not prove to be the most effective H 2 -producing culture combination [37].…”

Section: Biological Hydrogen Productionmentioning

confidence: 85%

“…In dark-fermentative BHP, the H 2 yields are quite low in most cases and exceptionally it is posible to achieve a value of 3.8 mol H 2 /mol hexose [57]. In contrast, the two stage integrative approach is much more effective and exceptionally only it falls around 2.8-3.9 mol/mol hexose [45,51,58]. A summary of the results of yields of C7.0 mol H 2 /mol hexose reveals that it has been achieved with combinations such as (i) mixed culture-R. palustris and water hyacinth (10 g/l) [33], (ii) Clostridium butyricum-R. sphaeroides-algal biomass (starch at the rate of 5 g/l) [31], (iii) C. butyricum and Enterobacter aerogenes-R. sphaeroides/Rhodobacter sp.…”

Section: Biological Hydrogen Productionmentioning

confidence: 99%

“…The intermediates of the dark-fermentative BHP, such as acetic and butyric acid can be taken up by photosynthetic organisms to generate additional H 2 (Eqs. [5][6] [45,46,50,51] …”

Section: Biological Hydrogen Productionmentioning

confidence: 99%

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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: Biological Hydrogen Productionmentioning

confidence: 85%

Section: Biological Hydrogen Productionmentioning

confidence: 99%

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Integrative Biological Hydrogen Production: An Overview

Patel

Kalia

2012

Indian J Microbiol

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“…Pattanamanee et al 7 discussed the kinetics of hydrogen production in repeated‐batch fermentations under various operating conditions. Özgür et al 8 investigated the production of hydrogen in a batch‐operated bioreactor from glucose, potato steam peels, and molasses. Androga et al 9 studied the effect of biomass recycling on biomass growth and hydrogen production using fed‐batch cultures of R. capsulatus.…”

Section: Introductionmentioning

confidence: 99%

Hydrogen Production by a Photosynthetic Bacterium: Some Analytical Solutions

Rasi¹,

Rajendran²

2015

Chem Eng & Technol

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The mathematical model for hydrogen production by the photosynthetic bacterium Rhodobacter capsulatus in a batch photobioreactor is discussed. An analytical method -the homotopy perturbation method -is presented to solve the nonlinear differential equations that describe the biomass formation, substrate utilization, and hydrogen production with respect to time. Approximate analytical expressions for the concentrations of biomass, substrate and hydrogen are derived for various values of the relevant parameters. The analytical results are compared with experimental data. In addition, the sensitivity of the kinetic parameters is also analyzed. The time required to achieve the maximum growth of biomass and complete degradation of the substrate is reported.

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“…H 2 is viewed as a sustainable energy carrier with negligible or zero use of hydrocarbons and high-energy yield (122 kJ g À1 ) (Mu et al, 2006;Mohan et al, 2008;Özgür et al, 2010). In dark fermentative H 2 production, carbohydrate-rich substrates are converted to H 2 and other products by a number of different microorganisms.…”

Section: Introductionmentioning

confidence: 99%

Effects of different pretreatment methods on anaerobic mixed microflora for hydrogen production and COD reduction from palm oil mill effluent

Mohammadi

Ibrahim

Annuar

et al. 2011

Journal of Cleaner Production

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a b s t r a c tEffects of different pretreatment methods on sludge inocula were evaluated with respect to hydrogen (H 2 ) production enhancement using palm oil mill effluent (POME) in a batch system. The experimental results showed that the pretreatment methods (chemical, acid, heat-shock, freezing and thawing, and base) at 35 C and initial pH 5.5 had a positive influence on H 2 production yield and chemical oxygen demand (COD) removal efficiency during the fermentative H 2 production as compared to the control experiments (without pretreatment). Heat-shock pretreatment method was shown to be a simple and useful method for enhancing both H 2 producing and COD removal processes from POME with highest H 2 yield and COD removal efficiency at 0.41 mmol H 2 /g COD and 86%, respectively.

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Potential use of thermophilic dark fermentation effluents in photofermentative hydrogen production by Rhodobacter capsulatus

Cited by 86 publications

References 42 publications

Integrative Biological Hydrogen Production: An Overview

Integrative Biological Hydrogen Production: An Overview

Hydrogen Production by a Photosynthetic Bacterium: Some Analytical Solutions

Effects of different pretreatment methods on anaerobic mixed microflora for hydrogen production and COD reduction from palm oil mill effluent

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