Demonstration and optimization of sequential microaerobic dark- and photo-fermentation biohydrogen production by immobilized Rhodobacter capsulatus JP91

Sağır, Emrah; Yucel, Meral; Hallenbeck, Patrick C.

doi:10.1016/j.biortech.2017.11.018

Cited by 50 publications

(8 citation statements)

References 39 publications

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“…coli using cheese whey as substrate 43 . In another study by using cheese whey and glucose as substrate, 1.33 mol hydrogen/mol lactose 44 and 7.8 mol H 2 /mol glucose have been achieved respectively 45 . Using cheese whey powder (CWP) 1.03 mol H 2 /mol glucose has been obtained by thermophilic dark fermentation 46 .…”

Section: Resultsmentioning

confidence: 97%

Cheese whey to biohydrogen and useful organic acids: A non-pathogenic microbial treatment by L. acidophilus

Pandey

Srivastava

Rai

et al. 2019

Sci Rep

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The burgeoning organic waste and continuously increasing energy demands have resulted in significant environmental pollution concerns. To address this issue, the potential of different bacteria to produce biogas/biohydrogen from organic waste can be utilized as a source of renewable energy, however these pathogenic bacteria are not safe to use without strict contact isolation. In this study the role of safe food grade lactic acid bacteria ( Lactobacillus spp .) was investigated for production of biogas from cheese waste with starting hexose concentration 32 g/L. The bacterium Lactobacillus acidophilus was identified as one of the major biogas producers at optimum pH of 6.5. Further the optimum inoculum conditions were found to be 12.5% at inoculum age of 18 h. During the investigation the maximum biogas production was observed to be 1665 mL after 72 hours of incubation at pH 6.5. The biogas production was accompanied with production of other valuable metabolites in the form of organic acids including pyruvate, propionate, acetate, lactate, formate and butyrate. Thus this research is paving way for nonpathogenic production of biohydrogen from food waste.

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Section: Resultsmentioning

confidence: 97%

Cheese whey to biohydrogen and useful organic acids: A non-pathogenic microbial treatment by L. acidophilus

Pandey

Srivastava

Rai

et al. 2019

Sci Rep

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“…R 2 and R 2 values) and its ability to use fewer experimental runs in comparison to the CCD model [220][221][222]. Rafieenia et al [223] recently reported an innovative [225]. Therefore, these findings may provide new avenues for the development of integrated processes in DF.…”

Section: Mathematical Toolsmentioning

confidence: 94%

“…Yin and Wang[224] produced a maximum H 2 yield of 1.29 mol H 2 mol À 1 glucose and production rate of 86.7 H 2 L À 1 h À 1 at optimal variables of 7.1, 11.3 g L À 1 , 10.4%, and 34.8 � C for initial pH, glucose concentration, inoculation amount, and temperature, respectively, using a newly isolated strain of Enterococcus faecium. Likewise, Sa� gır et al[225] developed a sequential dark and photo-fermentative process in which the BBD method was used to optimize the process variables. A maximum H 2 yield of 7.8 mol H 2 /mol glucose was achieved at a glucose concentration of 6 � 10 À 3 mol m À 3 , inoculum fraction of 62.5%, and oxygen concentration of 4.5% using Rhodobacter capsulatus JP91…”

mentioning

confidence: 99%

Revising the dark fermentative H2 research and development scenario – An overview of the recent advances and emerging technological approaches

Sekoai

Daramola

Mogwase

et al. 2020

Biomass and Bioenergy

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The indiscriminate use of fossil fuels has led to several challenges such as greenhouse gas emissions, environmental degradation, and energy security. Establishment of clean fuels is at the forefront of science and innovation in today's society to curb these problems. Dark fermentation (DF) is widely regarded as the most promising clean energy technology of the 21st century due to its desirable properties such as high energy content, its non-polluting features, its ability to use a broad spectrum of feedstocks and inoculum sources, as well as its ability to use mild fermentation conditions. In developing nations, this technology could be instrumental in establishing effective waste disposal systems while boosting the production of clean fuels. However, DF is still hindered by the low yields which stagnate its commercialization. This paper reviews the recent and emerging technologies that are gaining prominence in DF based on information that has been gathered from recent scientific publications. Herein, novel enhancement methods such as cell immobilization, nanotechnology, mathematical optimization tools, and technologies for biogas upgrading using renewable H 2 are comprehensively discussed. Furthermore, a section which discusses the potential of bioenergy in Sub-Saharan Africa including South Africa is included. Finally, scientific areas that need further research and development in DF process are also presented.

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“…H 2 production was improved in SDPF by using single bacterial culture of R. capsulatus JP91 in an immobilized form by Sağir et al. [127]. The concept behind the use of immobilized photofermentative bacterial cells for bioH 2 production was to maintain high cell concentration in a bioreactor throughout the fermentation process.…”

Section: Possible Strategy Toward Overall Cost‐effective Bioh2 Productionmentioning

confidence: 99%

“…The quadratic model chosen was found to be statistically significant based on a P ‐value ≤ 0.05. Three‐dimensional response surface plots suggested that optimum concentrations of oxygen, inoculum concentration, and glucose concentration was important parameters for improving the bioH 2 production rate and yield as slight increase or decrease in their respective concentration resulted in lower yield [127]. Laurinavichene et al attempted to reduce overall cost of SDPF in the batch mode by directly feeding the FLW into PBR without any sterilization or centrifugation.…”

Section: Possible Strategy Toward Overall Cost‐effective Bioh2 Productionmentioning

confidence: 99%

Development of novel strategies for higher fermentative biohydrogen recovery along with novel metabolites from organic wastes: The present state of the art

Rao

Basak

2020

Biotech and App Biochem

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Depletion of fossil fuels and environmental concern has compelled us to search for alternative fuel. Hydrogen is considered as a dream fuel as it has high energy content (142 kJ g −1 ) and is not chemically bound to carbon. At present, fossil fuel-based methods for producing hydrogen require high-energy input, which makes the processes expensive. The major processes for biohydrogen production are biophotolysis, microbial electrolysis, dark fermentation, and photofermentation. Fermentative hydrogen production has the additional advantages of potentially using various waste streams from different industries as feedstock. Novel strategies to enhance the productivity of fermentative hydrogen production include optimization in pretreatment methods, integrated fermentation systems (sequential and combined fermentation), use of nanoparticles as additives, metabolic engineering of microorganisms, improving the light utilization efficiency, developing more efficient photobioreactors, etc. More focus has been given to produce biohydrogen in a biorefinery approach in which, along with hydrogen gas, other metabolites (ethanol, butyric acid, 1,3-propanediol, etc.) are also produced, which have direct/indirect industrial applications. In present review, various emerging technologies that highlight biohydrogen production methods as effective and sustainable methods on a large scale have been critically reviewed. The possible future developments are also outlined.

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Demonstration and optimization of sequential microaerobic dark- and photo-fermentation biohydrogen production by immobilized Rhodobacter capsulatus JP91

Cited by 50 publications

References 39 publications

Cheese whey to biohydrogen and useful organic acids: A non-pathogenic microbial treatment by L. acidophilus

Cheese whey to biohydrogen and useful organic acids: A non-pathogenic microbial treatment by L. acidophilus

Revising the dark fermentative H2 research and development scenario – An overview of the recent advances and emerging technological approaches

Development of novel strategies for higher fermentative biohydrogen recovery along with novel metabolites from organic wastes: The present state of the art

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