Thermophilic-operating environment promotes hydrogen-producing microbial growth in a lignocellulose-fed DF-MEC system for enhanced biohydrogen evolution

Ndayisenga, Fabrice; Yu, Zhisheng; Wang, Bobo; Wu, Gang; Zhang, Hongxun; Phulpoto, Irfan Ali; Zhao, Jie; Yang, Jie

doi:10.1016/j.psep.2022.09.026

Cited by 18 publications

(9 citation statements)

References 61 publications

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“…The mothur software package was employed to calculate the microbial diversity indices including Chao1 estimator, goods coverage, and Shannon index. The calculation formula was used as described previously [1].…”

Section: Discussionmentioning

confidence: 99%

“…The archaeal region V 4 -V 5 of 16S rRNA genes was conducted using universal primers 524-10-ext (5 ′ -3 ′ ) and arch958RmodR (5 ′ -3 ′ ) [1]. DNA libraries were generated by employing purified PCR products and a TruSeq® DNA PCR-Free Sample Preparation Kit following the manufacturer's guidelines.…”

Section: Experimental Setup For Anaerobic Dark Fermentationmentioning

confidence: 99%

“…Hydrogen, a highly regarded and prospective energy carrier for the future, is often derived from nonrenewable fossil fuels. The primary methods of production are steam reforming of methane and oxidations of natural gas [1]. Nevertheless, the processes involved in hydrogen production are unavoidably associated with a substantial release of greenhouse gasses (GHG), which contribute to the exacerbation of climate change-related concerns such as global warming [1].…”

Section: Introductionmentioning

confidence: 99%

“…The primary methods of production are steam reforming of methane and oxidations of natural gas [1]. Nevertheless, the processes involved in hydrogen production are unavoidably associated with a substantial release of greenhouse gasses (GHG), which contribute to the exacerbation of climate change-related concerns such as global warming [1]. Consequently, these methods are seen as environmentally unfriendly and unsustainable [2].…”

Section: Introductionmentioning

confidence: 99%

“…It involves the acidogenic degradation of substrates that are rich in carbohydrates. DF has been shown to possess some notable advantages, such as requiring less energy input, having a simple structure, and offering a cheaper cost of production [1]. Consequently, the use of inexpensive organic materials, such as lignocellulosic agricultural waste, via dark fermentation (DF) is a promising approach for the large-scale production of biohydrogen.…”

Section: Introductionmentioning

confidence: 99%

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Lipopeptide Biosurfactants Enhanced Biohydrogen Evolution from Lignocellulose Biomass and Shaped the Microbial Community and Diversity

Phulpoto,

Bobo,

Qazi

et al. 2024

International Journal of Energy Research

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Biohydrogen is a renewable and clean energy source that can be produced from cheap and abundantly available lignocellulose biomass. However, the complex structure of lignocellulose requires various physicochemical and biological pretreatments, as it exhibits significant resistance to microbial degradation. Biosurfactants can play a vital role in facilitating the microbial degradation of lignocellulose and inducing enzymatic hydrolysis. In addition, they can lower the surface tension to impede lignin-cellulase interactions and alter the lignin characteristics. Indeed, the application of lipopeptide biosurfactants to enhance hydrogen production from lignocellulose biomass is poorly studied. Thus, this study investigates the influence of lipopeptide biosurfactants on biohydrogen enhancement from lignocellulose biomass and their impact on short-chain fatty acid generation during anaerobic dark fermentation. Subsequently, Illumina HiSeq 2500 sequencing was employed to analyze the structure of microbial community and diversity significantly affected by the presence or absence of aided biosurfactants. Results revealed that the lipopeptide biosurfactant significantly improved the cumulative biogas and hydrogen production. The maximum cumulative hydrogen yield was achieved in lipopeptide-assisted bioreactors including BioR_3, BioR_2, and BioR_4 (i.e., 4.68, 4.56, and 4.50 mmol/2 g of substrate, respectively), showing an increase of 30.79% to 36.03% higher than BioR_1 (3.44 mmol). In addition, lipopeptide biosurfactants also impacted the short-chain fatty acid generation, where acetic acid, propionic acid, and isobutyric acid were found as major acids. On the other hand, various bacterial phyla, including Firmicutes, Proteobacteria, Actinobacteria, Chloroflexi, Planctomycetota, and Acidobacteriota, were detected in all bioreactors. Among the phyla, Firmicutes were predominated (54.74% to 86.38%) in lipopeptide-assisted bioreactors, indicating that biosurfactants substantially influenced the microbial community structure during hydrogen production. Besides, Ruminiclostridium and Bacillus were significantly promoted in lipopeptide-assisted bioreactors, representing efficient lignocellulose-degrading and hydrogen-producing genera. Conclusively, this study offers valuable insights into the underlying mechanism through which lipopeptide biosurfactants actively participate in biohydrogen production and illuminates the variations occurring within microbial communities.

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Section: Discussionmentioning

confidence: 99%

Section: Experimental Setup For Anaerobic Dark Fermentationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Lipopeptide Biosurfactants Enhanced Biohydrogen Evolution from Lignocellulose Biomass and Shaped the Microbial Community and Diversity

Phulpoto,

Bobo,

Qazi

et al. 2024

International Journal of Energy Research

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Polymer Nanocomposites: Catalysts for Sustainable Hydrogen Production from Challenging Water Sources

Abdelazeez,

Rabia,

Hasan

et al. 2024

Adv Energy and Sustain Res

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In this review, the transformative role of polymer nanocomposites in hydrogen production from challenging water sources is explored. Their catalytic efficiency and unique properties are highlighted, making them vital for overcoming complexities in hydrogen generation. Polymer nanocomposites demonstrate exceptional adaptability to various water compositions, including wastewater and saline water, enhancing efficiency, stability, and compatibility. In this review, the significance of these nanomaterials in the sustainable energy landscape is underscored, showcasing their ability to outperform conventional methods. Key breakthroughs in catalytic efficiency and adaptability are emphasized, illustrating their crucial role in clean hydrogen production. Looking forward, in this review, potential applications of polymer nanocomposites in diverse fields, from industrial processes to energy sector advancements, are identified. This synthesis of findings not only enhances the understanding but also sets the stage for the widespread adoption of polymer nanocomposites in meeting the global demand for sustainable hydrogen production.

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Leftover Living Cells’ Derived Biomass and Microorganisms as a Source for Hydrogen Energy Production

Harikrishnan,

Mani,

Kumar

et al. 2024

New Technologies for Energy Transition Based on Sustainable Development Goals

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Thermophilic-operating environment promotes hydrogen-producing microbial growth in a lignocellulose-fed DF-MEC system for enhanced biohydrogen evolution

Cited by 18 publications

References 61 publications

Lipopeptide Biosurfactants Enhanced Biohydrogen Evolution from Lignocellulose Biomass and Shaped the Microbial Community and Diversity

Lipopeptide Biosurfactants Enhanced Biohydrogen Evolution from Lignocellulose Biomass and Shaped the Microbial Community and Diversity

Polymer Nanocomposites: Catalysts for Sustainable Hydrogen Production from Challenging Water Sources

Leftover Living Cells’ Derived Biomass and Microorganisms as a Source for Hydrogen Energy Production

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