Acinetobacter junii AH4-A Potential Strain for Bio-hydrogen Production from Dairy Industry Anaerobic Sludge

Murugan, R.; Dinesh, G.H.; Swetha, T.; Thulasinathan, Boobalan; Jothibasu, Muthuramalingam; Manimaran, P.; Selvakumar, Gopal; Arun, A.

doi:10.22207/jpam.12.4.09

Cited by 11 publications

(5 citation statements)

References 37 publications

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“…At the genus level, Acinetobacter (belonging to family Moraxellaceae ), Syntrophomonas (belonging to family Syntrophomonadaceae ), and Clostridium (belonging to family Clostridiaceae ) were increased from 3.9, 2.3, and 2.8% in the control sample to 10.8, 9.1, and 3.6%, respectively, when T80/RGO was supplemented (Figures b,c and S5b,c). These genera are widely reported as fermentative and hydrogen-producing bacteria . A previous study reported that the Acinetobacter junii-AH4 strain has the ability to generate hydrogen from the dark fermentation of various industrial wastewaters …”

Section: Resultsmentioning

confidence: 99%

“…These genera are widely reported as fermentative and hydrogenproducing bacteria. 84 A previous study reported that the Acinetobacter junii-AH4 strain has the ability to generate hydrogen from the dark fermentation of various industrial wastewaters. 85 Syntrophomonas can oxidize long fatty acids to create H 2 and CO 2 ; 86 this also explained the high removal efficiency of lipids in our study.…”

Section: Acs Esandt Engineeringmentioning

confidence: 99%

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Stimulating the Fermentation Process of Industrial Food Waste via Nonionic Surfactant/Graphene Nanosheet Combined Supplementation

et al. 2022

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The synergistic impact of Tween 80 (T80) and reduced graphene oxide (RGO) on the codigestion process of food waste and biscuit wastewater via an anaerobic sequential batch reactor was investigated in this study. The T80/RGO-amended reactor exhibited a hydrogen yield of 313.2 ± 89.3 mL/gCODinitial, which is 1.98-fold higher than that of the control. This increase was a consequence of the increase of hydrogenase enzyme activity from 0.24 ± 0.11 to 0.46 ± 0.15 mg MBreduced/min, as well as the stimulation of hydrolytic enzyme activities (i.e., α-amylase, xylanase, CM-cellulase, polygalacturonase, protease, and lipase). Likewise, microbial community analysis revealed that the relative abundances of genera Acinetobacter, Syntrophomonas, and Clostridium (H2-producing species) were enhanced from 3.9, 2.3, and 2.8% to 10.8, 9.1, and 3.6%, respectively, when T80/RGO was supplemented. On the other hand, molecular docking analysis was performed to explore the interaction of the hydrogenase protein with RGO (binding score: −10.1 kcal/mol) and T80 (binding score: −4.1 kcal/mol) as possible targets with active site residues. Eventually, supplementation of the T80/RGO mixture could stimulate the efficiency of the fermentative hydrogen process and, consequently, be used in practical engineering applications.

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Section: Resultsmentioning

confidence: 99%

Section: Acs Esandt Engineeringmentioning

confidence: 99%

Stimulating the Fermentation Process of Industrial Food Waste via Nonionic Surfactant/Graphene Nanosheet Combined Supplementation

et al. 2022

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“…The aeration pretreatment was conducted by shaking 20 mL of rice mill wastewater for 24 hours in a shaker. Freezing and thawing pretreatment was done by rice mill wastewater (20 mL) to −20°C for 5 minutes then it moved to 37°C for 24 hours 23 …”

Section: Methodsmentioning

confidence: 99%

“…Freezing and thawing pretreatment was done by rice mill wastewater (20 mL) to −20 C for 5 minutes then it moved to 37 C for 24 hours. 23…”

Section: Pretreatment Studymentioning

confidence: 99%

“…Each serum bottle was maintained under anaerobic conditions, incubated aseptically as reported earlier. 23,24 During fermentation, the headspace biogas was estimated utilizing the Hungate method. 25 The biogas arrangements were analyzed by GC, and the biohydrogen creation level was determined.…”

Section: Optimization Of Substrate Concentration and Ph For H 2 Produ...mentioning

confidence: 99%

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Dark fermentative biohydrogen production from rice mill wastewater

Ramu

Dinesh

Thulasinathan

et al. 2020

Intl J of Energy Research

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Hydrogen (H 2 ) is one of the most promising fuels for sustainable energy production. Microbial bio-H 2 fermentation is considered to be one of the environment friendly alternatives for satisfying the demand for fossil fuels. The study has aimed to isolate the effective bio-H 2 producing microbes from rice mill wastewater (RMWW) using various pre-treatment enrichment methods.Among the 27 enriched isolates, three isolates produced higher H 2 utilizing rice mill wastewater as the substrate. Molecular level identification revealed that the three bacterial strains were Bacillus thuringiensis-RH1, Bacillus aerophilus-RH2, and Bacillus beringensis-AARAT1. Optimization studies revealed that B. thuringiensis-RH1 would be a promising bio-H 2 producing bacterium with a yield of 0.96 ± 0.06 mol H 2 / mol glucose utilizing 50% of rice mill wastewater at pH 5.5. Furthermore, the obtained optimized substrate concentration (50%) and pH (5.5) from batch fermentation were used in the 3 L batch bioreactor experiment using B. thuringiensis-RH1. A higher hydrogen yield (HY) of 1.63 ± 0.14 mol H 2 /mol glucose using B. thuringiensis-RH1 at 72 hours was obtained in the extensive scale up process.

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Treatment of Dairy Byproducts with the Conversion of Useful Bio-Products

Srivastava

2020

Nanotechnology in the Life Sciences

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Acinetobacter junii AH4-A Potential Strain for Bio-hydrogen Production from Dairy Industry Anaerobic Sludge

Cited by 11 publications

References 37 publications

Stimulating the Fermentation Process of Industrial Food Waste via Nonionic Surfactant/Graphene Nanosheet Combined Supplementation

Stimulating the Fermentation Process of Industrial Food Waste via Nonionic Surfactant/Graphene Nanosheet Combined Supplementation

Dark fermentative biohydrogen production from rice mill wastewater

Treatment of Dairy Byproducts with the Conversion of Useful Bio-Products

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