Isolation and characterization of a novel photoheterotrophic strain ‘Rubrivivax benzoatilyticus TERI-CHL1’: Photo fermentative hydrogen production from spent effluent

Verma, Dipti; Kumar, Navneet; Subudhi, Sanjukta

doi:10.1016/j.ijhydene.2020.03.133

Cited by 18 publications

(3 citation statements)

References 20 publications

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“…Among the genera of non-sulfur purple bacteria most used in this process, we can mention Rhodopseudomonas [102][103][104], Rhodobacter [105,106], Rubrivivax [106], and others.…”

Section: Dark Fermentation and Photofermentation Of Pomementioning

confidence: 99%

“…The oxidation reaction of organic matter generates protons and electrons. These electrons are excited by sunlight and transformed into high-energy electrons that are later used to form ATP, which is used by the enzyme nitrogenase together with protons and electrons to fix nitrogen and transform it into molecular nitrogen and ammonia, producing hydrogen simultaneously, so it is essential that nitrogen is present under stressful conditions [101,106]. About 1.6, 4.0, and 2.8 mol of hydrogen are produced from 1 mol of acetic acid, butyric acid, and propionic acid, respectively [98].…”

Section: Dark Fermentation and Photofermentation Of Pomementioning

confidence: 99%

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Advances and Perspectives in Biohydrogen Production from Palm Oil Mill Effluent

Albuquerque,

Martinez-Burgos,

De Bona Sartor

et al. 2024

Fermentation

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Palm oil, the main vegetable oil produced globally, serves diverse purposes, ranging from cooking to the production of processed foods, cosmetics, and biodiesel. Despite contributing significantly to the economies of major producing nations, the escalating production of palm oil raises serious environmental concerns, including deforestation, biodiversity loss, and various forms of pollution. Palm oil mill effluent (POME), a byproduct of palm oil extraction, poses a severe environmental threat when left untreated. As an eco-friendly alternative, anaerobic digestion in controlled bioreactors has emerged, offering simultaneous POME treatment and biofuel generation, particularly hydrogen, with high energy efficiency. This review explores the challenges and opportunities associated with biohydrogen production from POME. Key considerations involve optimizing parameters through pretreatments, nanoparticle incorporation, defining optimal bioreactor conditions, determining hydraulic retention times, and integrating multi-stage processes like dark fermentation followed by photofermentation. This review also emphasizes the significance of sustainable practices and economic analyses in shaping the future of hydrogen production from POME, positioning it as a pivotal player in the palm oil industry’s circular economy and the global energy transition.

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“…Among the genera of non-sulfur purple bacteria most used in this process, we can mention Rhodopseudomonas [102][103][104], Rhodobacter [105,106], Rubrivivax [106], and others.…”

Section: Dark Fermentation and Photofermentation Of Pomementioning

confidence: 99%

Section: Dark Fermentation and Photofermentation Of Pomementioning

confidence: 99%

Advances and Perspectives in Biohydrogen Production from Palm Oil Mill Effluent

Albuquerque,

Martinez-Burgos,

De Bona Sartor

et al. 2024

Fermentation

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“…To increase yields, different strategies have been proposed, such as coupling biological systems to maximize the conversion of organic matter into H 2 . In this context, H 2 can be produced in two consecutive stages of DF and PF: raw substrate is fed to a higher-yield DF reactor, which has an effluent high in volatile fatty acids (VFAs); this effluent is fed into a second stage PF reactor, where the VFAs are fully metabolized into H 2 and CO 2 by purple non-sulfur (PNS) bacteria [1][2][3][4][5][6]. An integrated process between DF and PF would lead to a more complete conversion of substrates into biohydrogen [7].…”

Section: Introductionmentioning

confidence: 99%

Enrichment of a Mixed Culture of Purple Non-Sulfur Bacteria for Hydrogen Production from Organic Acids

Smith,

Toledo-Alarcón,

Schiappacasse

et al. 2023

Sustainability

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Hydrogen (H2) as a clean fuel holds global potential and can be produced through bio-processes. To enhance bioH2 yields, integrated systems have been proposed, combining dark fermentation (DF) of wastewater with a subsequent photofermentation (PF) stage involving purple non-sulfur (PNS) bacteria. Mixed cultures of PNS bacteria and their microbial ecology have been relatively understudied despite the known benefits of mixed cultures in industrial applications. The aim of this study was to obtain various mixed cultures of PNS bacteria under different environmental conditions during the enrichment stage. Four different mixed cultures were obtained (A, B, C, and D). However, in the H2 production phase, only Consortium A, which had been enriched with malic acid as the carbon source, exposed to 32 W m−2 of irradiance, and subjected to intermittent agitation, produced H2 with a yield of 9.37 mmol H2 g−1 COD. The consortia enriched were a hybrid of PF and DF bacteria. Especially in Consortium A, Rhodopseudomonas palustris was the dominant organism, and various DF bacteria were positively associated with H2 production, with their dominance comparable to that of PNS bacteria. Despite the reported low yields, optimizing environmental conditions for this culture could potentially enhance hydrogen production from DF effluents.

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