Dark hydrogen production in nitrogen atmosphere – An approach for sustainability by marine cyanobacterium Leptolyngbya valderiana BDU 20041

Prabaharan, Dharmar; Kumar, Dharmendra; Uma, Lakshmanan; Subramanian, Ganesh

doi:10.1016/j.ijhydene.2010.03.007

Cited by 18 publications

(4 citation statements)

References 26 publications

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“…Seawater contains a lot of natural inorganic and organic matter that can be used indirectly to produce biofuel through microbial or seaweed cultivation. Microorganisms such as phototrophic bacteria, cyanophytes, and dark-acidogenic bacteria can grow in seawater, producing H 2 and/or VFAs [64][65][66][67]. Furthermore, phototrophic bacteria have the potential to degrade VFAs for H 2 production [68].…”

Section: Seawater-mediated Biofuel Productionmentioning

confidence: 99%

Integrated Marine Biogas: A Promising Approach towards Sustainability

et al. 2022

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Fossil fuel depletion, climate change, and increased global energy demands are the driving forces to find alternative sources of energy. Marine-based biorefinery has been recently discussed as a promising route to mitigate the environmental challenges, enhance the energy recovery, and provide a potential source for value-added products. Anaerobic digestion is a promising technology that can convert the organic compounds of marine ecosystems into biogas. To date, a comprehensive review incorporating integrated biogas potential and effective approaches to enhance seaweed digestibility for biogas production from marine resources has not been reported. Thus, the present review aims to explore and comprehensively present seaweed and other marine resources for potential biogas production. The basics and challenges of biogas production from seaweed are elucidated. The impact of biochemical composition on biogas and the microbial communities involved in anaerobic digestion of seaweed are discussed. Utilization of different techniques such as pretreatment, co-digestion, and sequential extraction of seaweed biomass to enhance the biogas yield and to mitigate the effect of inhibitors are presented. Specifically, this article evaluates the co-digestion of seaweed with other biomass feedstocks or liquid biowastes. Integration of marine microalgae cultivation on anaerobic digestate for value-added compound production, biogas upgrading, and bioenergy recovery provides a promising approach towards a zero-waste marine-based system.

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Section: Seawater-mediated Biofuel Productionmentioning

confidence: 99%

Integrated Marine Biogas: A Promising Approach towards Sustainability

et al. 2022

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“…Micro-organisms such as cyanobacteria, phototrophic bacteria, and dark-acidogenic bacteria have the ability to produce H 2 via fermentation of organic matter in seawater. These micro-organisms can break down the organic matter into H 2 and volatile fatty acids (VFA). − Among them, phototropic bacteria have the only ability to further degrade the VFA to form H 2 and CO 2 . The fermentation reactions are carried out in the presence of essential nutrients related to the specific micro-organism.…”

Section: Technologies Available For Energy Production From Seawatermentioning

confidence: 99%

A Short Review on Hydrogen, Biofuel, and Electricity Production Using Seawater as a Medium

Kumaravel

Abdel‐Wahab

2018

Energy Fuels

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Energy security coupled with the impact of greenhouse gas emissions have resulted in growing interest in investigating new technologies for renewable energy production as an alternative to fossil fuels. In this context, seawater is an inexhaustible and environmentally benign source for the production of clean energy. Natural seawater is the most convenient medium to produce energy, when compared to synthetic seawater or fresh water. To date, there have been no detailed reviews regarding energy conversion methods using seawater. The main aim of this review is to furnish the important features of energy production/conversion technologies using seawater as a medium. The basic principle, application and important finding of the available technologies such as photocatalysis, photoelectrochemical, microbial desalination, biochemical, electrolysis, reverse electrodialysis, capacitive mixing, pressure retarded osmosis, mixing entropy battery, and seawater batteries have been described in this review. Energy or energy carriers can be produced in the form of electricity, hydrogen (H2), methane (CH4), and biodiesel. Relevant design and operating conditions that influence the energy production from seawater such as physicochemical properties of materials, reaction conditions, reactor design, and formation of byproducts are summarized briefly. We also found that most of the technologies have been evaluated only at the laboratory scale. To avoid the fouling problems, it is advised to use natural seawater after filtration.

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“…This genus of filamentous Cyanobacteria belongs to the Oscillatoriales order and has been reported in high temperature environments (Castenholz 1996(Castenholz , 2001. As many other Cyanobacteria, Leptolyngbya species have been studied for their potential use in hydrogen and bioactive compound production (Prabaharan et al 2010;Choi et al 2010;Thornburg et al 2011) as well as bioremediation of hydrocarbon contaminated environments (Al-Bader et al…”

Section: Biodiversity In Microbial Biofilmsmentioning

confidence: 99%

Comparison of the microbial communities of hot springs waters and the microbial biofilms in the acidic geothermal area of Copahue (Neuquén, Argentina)

et al. 2015

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Copahue is a natural geothermal field (Neuquén province, Argentina) dominated by the Copahue volcano. As a consequence of the sustained volcanic activity, Copahue presents many acidic pools, hot springs and solfataras with different temperature and pH conditions that influence their microbial diversity. The occurrence of microbial biofilms was observed on the surrounding rocks and the borders of the ponds, where water movements and thermal activity are less intense. Microbial biofilms are particular ecological niches within geothermal environments; they present different geochemical conditions from that found in the water of the ponds and hot springs which is reflected in different microbial community structure. The aim of this study is to compare microbial community diversity in the water of ponds and hot springs and in microbial biofilms in the Copahue geothermal field, with particular emphasis on Cyanobacteria and other photosynthetic species that have not been detected before in Copahue. In this study, we report the presence of Cyanobacteria, Chloroflexi and chloroplasts of eukaryotes in the microbial biofilms not detected in the water of the ponds. On the other hand, acidophilic bacteria, the predominant species in the water of moderate temperature ponds, are almost absent in the microbial biofilms in spite of having in some cases similar temperature conditions. Species affiliated with Sulfolobales in the Archaea domain are the predominant microorganism in high temperature ponds and were also detected in the microbial biofilms.

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Dark hydrogen production in nitrogen atmosphere – An approach for sustainability by marine cyanobacterium Leptolyngbya valderiana BDU 20041

Cited by 18 publications

References 26 publications

Integrated Marine Biogas: A Promising Approach towards Sustainability

Integrated Marine Biogas: A Promising Approach towards Sustainability

A Short Review on Hydrogen, Biofuel, and Electricity Production Using Seawater as a Medium

Comparison of the microbial communities of hot springs waters and the microbial biofilms in the acidic geothermal area of Copahue (Neuquén, Argentina)

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