Effect of volatile fatty acids mixtures on the simultaneous photofermentative production of hydrogen and polyhydroxybutyrate

Cardeña, René; Valdez‐Vazquez, Idania; Buitrón, Germán

doi:10.1007/s00449-016-1691-9

Cited by 22 publications

(9 citation statements)

References 44 publications

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“…A comparison of the specific production activities of PHB and H 2 using volatile fatty acids was reported by Cardeña et al (2017); H 2 and PHB formations compete for the reducing equivalents released from bacteria growing under certain substrates, showing that the formation of H 2 or PHB is detrimental to the formation of each other. The accumulation of PHB in the biomass is undesired for hydrogen photoproduction reducing its yield.…”

Section: Combined Production Of Phb and Hmentioning

confidence: 93%

Hydroxytyrosol rich-mixture from olive mill wastewater and production of green products by feeding Rhodopseudomonas sp. S16-FVPT5 with the residual effluent

Carlozzi

Seggiani

Capperucci

et al. 2019

Journal of Biotechnology

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This study disserts on the exploitation of olive mill wastewater (OMW) for the production of both bio-based polyβ-hydroxybutyrate (PHB) and hydrogen (H 2) by using the residual effluent as feedstock for growing purple bacteria after the recovery of hydroxytyrosol-rich mixtures. In particular, Rhodopseudomonas sp. S16-FVPT5 was fed with either the virgin OMW or dephenolized-OMW (d-OMW). For polyphenols removal, the OMW was treated with activated carbon; subsequently, acidified ethanol (pH = 3.1) at 50°C was used as extractor solvent for obtaining hydroxytyrosol-rich mixtures. The maximum hydroxytyrosol content in the resultant polyphenolic mixture was 2.02 g/L. The highest co-production of PHB (315 mg PHB/L) and H 2 (2236 mL H 2 /L) were achieved feeding Rhodopseudomonas sp. S16-FVPT5 with pure d-OMW. The highest hydrogen yield (4.55 L(H 2)/L d-OMW) was obtained feeding the bacterium with d-OMW, diluted at 25%; by increasing the content of d-OMW into the culture broth the hydrogen yield progressively decreased. Lower results were obtained by feeding the bacterium with a synthetic medium, the cumulative hydrogen was 1855 mL H 2 /L); the PHB was 101 mg PHB/L. The highest theoretical light conversion efficiency was 2.36% with the synthetic medium and 1.99% when feeding Rhodopseudomonas sp. S16-FVPT5 with d-OMW diluted with water 50%, v/v.

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Section: Combined Production Of Phb and Hmentioning

confidence: 93%

Hydroxytyrosol rich-mixture from olive mill wastewater and production of green products by feeding Rhodopseudomonas sp. S16-FVPT5 with the residual effluent

Carlozzi

Seggiani

Capperucci

et al. 2019

Journal of Biotechnology

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“…Six samples of the graphite felt with attached biofilms were taken from various sections. Samples were characterized by 454 pyrosequencing as described by Cardeña et al …”

Section: Methodsmentioning

confidence: 99%

“…The working volume was considered for volumetric current density calculations (A m ‐3 ). The volumetric hydrogen production rate with respect to the cathodic chamber ( Q ) (mL H 2 L ‐1 cat d ‐1 ) was evaluated by adjusting the data to the Gompertz model . The real surface of the anode was used to calculate the geometric current density (A m ‐2 ).…”

Section: Methodsmentioning

confidence: 99%

“…The volumetric hydrogen production rate with respect to the cathodic chamber (Q) (mL H 2 L -1 cat d -1 ) was evaluated by adjusting the data to the Gompertz model. 20 The real surface of the anode was used to calculate the geometric current density (A m -2 ). The average current density (I v ) corresponds to a 4 h period of maximum current production for each batch cycle.…”

Section: Calculationsmentioning

confidence: 99%

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Improvement of the bioelectrochemical hydrogen production from food waste fermentation effluent using a novel start‐up strategy

Cardeña

Moreno‐Andrade

Buitrón

2017

J of Chemical Tech & Biotech

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BACKGROUND Food waste is a valuable source of hydrogen by dark fermentation. Dark fermentation effluent contains volatile fatty acids that can be further converted into more hydrogen using microbial electrolysis cells (MECs). In this process, the anodic potential (Ean) has a significant influence on the MEC performance as well as the effluent composition. The objective of this study was to evaluate the effects of variation of the anode potential and substrate composition (food waste fermentation effluent) on the performance of hydrogen production using two‐chamber MECs. RESULTS Colonization was conducted using an Ean of 0.5 V vs Ag/AgCl. After 38 days, the Ean had decreased to 0.3 V, resulting in an increase in the hydrogen production rate (from 287 to 482 mL H2 L‐1cat d‐1). A maximum hydrogen production rate of 685 mL H2 L‐1cat d‐1 was observed when effluent that contained the highest acetate concentration was utilized. Cathodic hydrogen recovery was higher than 93%, and hydrogen yield was greater than 873 mL H2 g‐1 COD. CONCLUSION The start‐up strategy in which Ean is decreased after the formation of an electroactive biofilm resulted in increased hydrogen production. The composition of the food waste fermented effluent influences the hydrogen production rate. © 2017 Society of Chemical Industry

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“…Among the different short-chain organic acids utilized, only acetate and propionate can lead to the production of PHB in R. palustris , achieving 17.1% and 11.8% substrate conversion efficiency, respectively ( Wu et al, 2012 ). Moreover, mixtures of acetate, propionate and butyrate as substrates had a significant effect on PHB production, 16.4 mg/g/day ( Cardena et al, 2017 ). When acetate was used as the carbon source, under limiting ammonium concentrations, acetate was consumed through the glyoxylate pathway to produce PHB; however, under nitrogen starvation conditions, acetate was consumed through the TCA cycle and PHB production was increased by 30% ( McKinlay et al, 2014 ).…”

Section: Applications Of R Palustrismentioning

confidence: 99%

Characteristics and Application of Rhodopseudomonas palustris as a Microbial Cell Factory

Ning

Sun³

et al. 2022

Front. Bioeng. Biotechnol.

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Rhodopseudomonas palustris, a purple nonsulfur bacterium, is a bacterium with the properties of extraordinary metabolic versatility, carbon source diversity and metabolite diversity. Due to its biodetoxification and biodegradation properties, R. palustris has been traditionally applied in wastewater treatment and bioremediation. R. palustris is rich in various metabolites, contributing to its application in agriculture, aquaculture and livestock breeding as additives. In recent years, R. palustris has been engineered as a microbial cell factory to produce valuable chemicals, especially photofermentation of hydrogen. The outstanding property of R. palustris as a microbial cell factory is its ability to use a diversity of carbon sources. R. palustris is capable of CO2 fixation, contributing to photoautotrophic conversion of CO2 into valuable chemicals. R. palustris can assimilate short-chain organic acids and crude glycerol from industrial and agricultural wastewater. Lignocellulosic biomass hydrolysates can also be degraded by R. palustris. Utilization of these feedstocks can reduce the industry cost and is beneficial for environment. Applications of R. palustris for biopolymers and their building blocks production, and biofuels production are discussed. Afterward, some novel applications in microbial fuel cells, microbial electrosynthesis and photocatalytic synthesis are summarized. The challenges of the application of R. palustris are analyzed, and possible solutions are suggested.

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Effect of volatile fatty acids mixtures on the simultaneous photofermentative production of hydrogen and polyhydroxybutyrate

Cited by 22 publications

References 44 publications

Hydroxytyrosol rich-mixture from olive mill wastewater and production of green products by feeding Rhodopseudomonas sp. S16-FVPT5 with the residual effluent

Hydroxytyrosol rich-mixture from olive mill wastewater and production of green products by feeding Rhodopseudomonas sp. S16-FVPT5 with the residual effluent

Improvement of the bioelectrochemical hydrogen production from food waste fermentation effluent using a novel start‐up strategy

Characteristics and Application of Rhodopseudomonas palustris as a Microbial Cell Factory

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