Development of a biofilm technology for the production of 1,3-propanediol (1,3-PDO) from crude glycerol

Casali, Silvia; Güngörmüşler, Mine; Bertin, Lorenzo; Fava, Fabio; Azbar, Nuri

doi:10.1016/j.bej.2011.11.012

Cited by 57 publications

(31 citation statements)

References 36 publications

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“…The theoretical yield is 0.578 g/g under no butyrate and no hydrogen formation conditions . High dilution rates (D = 0.2 h −1 ) combined with high glycerol concentrations (50–70 g/L) decreased mass yield to 0.3–0.23 g/g probably as a result of the pathways towards organic acids and other metabolites or inhibition . Glycerol consumed (S 0 ‐S r ) increased linearly with increases in inlet substrate concentration for low dilution rates (0.05 h −1 ).…”

Section: Resultsmentioning

confidence: 96%

“…Butyric acid is a common byproduct when Clostridium species are used as biocatalysts. Butyric acid could be a strong competitor for 1,3‐PD since both use NaDH2 as a coenzyme . Papanikolaou et al demonstrated that, during the continuous fermentation of C. butyricum in industrial glycerol at low and medium specific growth rates (until 0.1 h −1 ), butyrate production was preferred, whereas higher rates favour acetate production.…”

Section: Resultsmentioning

confidence: 99%

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Continuous bioproduction of 1,3‐propanediol from biodiesel raw glycerol: Operation with free and immobilized cells of Clostridium butyricum DSM 10702

et al. 2016

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This work investigates the bioproduction of 1,3‐propanediol (1,3‐PD) from biodiesel derived raw glycerol with free and immobilized cells of Clostridium butyricum DSMZ 10702. The cultures were carried out under continuous conditions in a stirred tank bioreactor with suspended cells and a fluidized‐bed bioreactor with immobilized cells. The microorganisms were immobilized by entrapment in calcium alginate gel beads. The effect of dilution rate and glycerol concentration in the feed on 1,3‐PD production was investigated for both bioreactor configurations. Results showed that 1,3‐PD concentration and glycerol uptake decreased when dilution rate increased. Maximum product concentration was similar in both bioreactors, 24.3 g/L and 20.5 g/L for suspended cells and Ca‐alginate immobilized cells, respectively, for a glycerol feed concentration of 50 g/L and a dilution rate of 0.05 h−1. The higher productivities were observed for a dilution rate of 0.15 h−1 for the suspended culture bioreactor and 0.2 h−1 for the immobilized cell bioreactor. Although maximum productivity was similar in both systems, 2.8 g 1,3‐PD/(L · h), cell immobilization was shown to be more resistant to washout at higher dilution rates.

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Section: Resultsmentioning

confidence: 96%

Section: Resultsmentioning

confidence: 99%

Continuous bioproduction of 1,3‐propanediol from biodiesel raw glycerol: Operation with free and immobilized cells of Clostridium butyricum DSM 10702

et al. 2016

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“…Superior results were obtained with Poraver® porous glass beads (Dagher et al 2010;Dishisha et al 2012), Vukopor® and polyurethane foam (Casali et al 2012). …”

Section: Introductionmentioning

confidence: 96%

Succinic acid-producing biofilms of Actinobacillus succinogenes: reproducibility, stability and productivity

Maharaj

Bradfield

Nicol

2014

Appl Microbiol Biotechnol

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Continuous anaerobic fermentations were performed in a biofilm reactor packed with Poraver® beads. Dilution rates (D) varied between 0.054 h -1 and 0.72 h -1 and D-glucose and CO 2 gas were used as carbon substrates. Steady-state conditions were shown to be repeatable and independent of the operational history. Production stability was achieved over periods exceeding 80 h at values of D below 0.32 h -1 . In these situations, steady-state variation (expressed as fluctuations in NaOH neutralisation flow rates) exhibited a standard deviation of less than 5% while no indication of biofilm deactivation was detected. The total biomass amount was found to be independent of the dilution rate with an average dry concentration of

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“…Both nominated bacterial strains were able to grow on raw glycerol resulting an impressive accumulation of 1,3-PD in the fermentation broths. From this report can be observed that both C. freundii and P. agglomerans are novel strains able to convert raw glycerol into 1,3-propanediol recording good concentrations and conversion yields (Casali et al, 2012).…”

Section: Introductionmentioning

confidence: 98%

Isolated Microorganisms for Bioconversion of Biodiesel-Derived Glycerol Into 1,3-Propanediol

Mitrea¹,

Călinoiu²,

Precup³

et al. 2017

BUASVMCN-FST

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During biodiesel production, massive amounts of raw glycerol are created generating an environmental issue and the same time an increase of biodiesel production cost at the same time. This raw glycerol could be converted by specific strains into value-added products, like 1,3-propanediol (1,3-PD), an important monomer used in the synthesis of biodegradable polyesters.The present work is based on recent scientific articles and experimental studies on the targeted topic, namely on the use of bacterial strains for bioconversion of biodiesel-derived glycerol into valuable products, like 1,3-PD. Concentrations, yields and productivity of 1,3-PD are presented for various bacterial strains. Important results as respects the microbial bioconversion of biodiesel-derived glycerol into 1,3-PD were registered for strains like Klebsiella pneumoniae, Citrobacter freundii, Escherichia coli and Lactobacillus diolivorans.From this study can be concluded that waste glycerol may be used as a nutrient source for microbial development and the production of 1,3-propanediol with high concentrations and yields.

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Development of a biofilm technology for the production of 1,3-propanediol (1,3-PDO) from crude glycerol

Cited by 57 publications

References 36 publications

Continuous bioproduction of 1,3‐propanediol from biodiesel raw glycerol: Operation with free and immobilized cells of Clostridium butyricum DSM 10702

Continuous bioproduction of 1,3‐propanediol from biodiesel raw glycerol: Operation with free and immobilized cells of Clostridium butyricum DSM 10702

Succinic acid-producing biofilms of Actinobacillus succinogenes: reproducibility, stability and productivity

Isolated Microorganisms for Bioconversion of Biodiesel-Derived Glycerol Into 1,3-Propanediol

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