Performance of trickle-bed bioreactors for converting synthesis gas to methane

Kimmel, D. E.; Klasson, K. Thomas; Clausen, Edgar C.; Gaddy, J.L.

doi:10.1007/bf02922625

Cited by 46 publications

(34 citation statements)

References 17 publications

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“…Medium solutions were buffered to pH 7.0±0.2 with NaHCO 3 (Isci & Demirer, 2007). Synthetic syngas containing CO (55% mole), H 2 (20% mole), and CO 2 (10% mole) (Kimmel et al, 1991) was purchased from AGA gas (Borås, Sweden).…”

Section: Anaerobic Culture Medium and Syngasmentioning

confidence: 99%

“…Thus, the combination of thermal and biological processes for the conversion of feedstocks into biofuel has been explored. This alternative method can generate a variety of products including methane from a wide variety of materials (Daniels et al, 1977;Kimmel et al, 1991; Klasson et al, 1992; Klasson et al, 1990). Using the fermentation processes and microorganisms offers several benefits over the catalytic process, such as being a more specific process, resulting in higher yields, having a lower energy consumption, being The bio-methanation of CO, H 2, and CO 2 in the syngas by the microorganisms can be performed in two pathways (Kimmel et al, 1991).…”

Section: Introductionmentioning

confidence: 99%

“…CO can be converted into CO 2 by the microorganisms (Henstra et al, 2007). The H 2 and CO 2 produced and initially present in the syngas are converted into methane by some methanogenic microorganisms (Kimmel et al, 1991). However, this microbial flora including methanogens requires a long retention time, since their growth rate is very low.…”

Section: Introductionmentioning

confidence: 99%

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Rapid bio-methanation of syngas in a reverse membrane bioreactor: Membrane encased microorganisms

Youngsukkasem

Chandolias

Taherzadeh

2015

Bioresource Technology

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Please cite this article as: Youngsukkasem, S., Chandolias, K., Taherzadeh, M.J., Rapid bio-methanation of syngas in a reverse membrane bioreactor: Membrane encased microorganisms, Bioresource Technology (2014), doi: http:// dx.doi.org/10. 1016/j.biortech.2014.07.071 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. The performance of a novel reverse membrane bioreactor (RMBR) with encased microorganisms for syngas bio-methanation as well as a co-digestion process of syngas and organic substances was examined. The sachets were placed in the reactors and examined in repeated batch mode. Different temperatures and short retention time were studied. The digesting sludge encased in the PVDF membranes was able to convert syngas into methane at a retention time of one day and displayed a similar performance as the free cells in batch fermentation. The co-digestion of syngas and organic substances by the RMBR (the encased cells) showed a good performance without any observed negative effects. At thermophilic conditions, there was a higher conversion of pure syngas and co-digestion using the encased cells compared to at mesophilic conditions. Rapid Bio-methanation of Syngas in a Reverse

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Section: Anaerobic Culture Medium and Syngasmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Rapid bio-methanation of syngas in a reverse membrane bioreactor: Membrane encased microorganisms

Youngsukkasem

Chandolias

Taherzadeh

2015

Bioresource Technology

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“…Continuous stirred tank reactors, bubble columns, packed columns, air-lift, trickle beds and hollow fiber reactors are some of the bioreactor configurations studied for alcohol production using syngas fermentation (Datar et al, 2004;Hickey et al, 2011;Kimmel et al, 1991;Kundiyana et al, 2010;Mohammadi et al, 2012;Shen et al, 2014a). Further, these reactors can be operated in different fermentation modes such as batch, fed-batch, continuous with and without cell recycle (Cotter et al, 2009;Grethlein et al, 1991;Lewis et al, 2007;Maddipati et al, 2011;Phillips et al, 1993).…”

Section: Bioreactor Designmentioning

confidence: 99%

A review of conversion processes for bioethanol production with a focus on syngas fermentation

Devarapalli¹,

Atiyeh²

2015

Biofuel Res. J.

134

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“…(Govind and Bishop, 1993). Trickle‐bed bioreactors have also been used for conversion of gas components to fuels such as hydrogen and methane from other gaseous components (Cowger et al, 1992; Kimmel et al, 1991; Klasson et al, 1990).…”

Section: Introductionmentioning

confidence: 99%

Microbial Removal of Alkanes from Dilute Gaseous Waste Streams: Kinetics and Mass Transfer Considerations

Klasson

et al. 1997

Biotechnol. Prog.

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Treatment of dilute gaseous hydrocarbon waste streams remains a current need for many industries, particularly as increasingly stringent environmental regulations and oversight force emission reduction. Biofiltration systems hold promise for providing low-cost alternatives to more traditional, energy-intensive treatment methods such as incineration and adsorption. Elucidation of engineering principles governing the behavior of such systems, including mass transfer limitations, will broaden their applicability. Our processes exploit a microbial consortium to treat a mixture of 0.5% n-pentane and 0.5% isobutane in air. Since hydrocarbon gases are sparingly soluble in water, good mixing and high surface area between the gas and liquid phases are essential for biodegradation to be effective. One liquid-continuous columnar bioreactor was operated for more than 30 months with continued degradation of n-pentane and isobutane as sole carbon and energy sources. The maximum degradation rate observed in this gas-recycle system was 2 g of volatile organic compounds (VOC)/(m3.h). A trickle-bed bioreactor was operated continuously for over 24 months to provide a higher surface area (using a structured packing) with increased rates. Degradation rates consistently achieved were approximately 50 g of VOC/(m3.h) via single pass in this gas-continuous columnar system. Effective mass transfer coefficients comparable to literature values were also measured for this reactor; these values were substantially higher than those found in the gas-recycle reactor. Control of biomass levels was implemented by limiting the level of available nitrogen in the recirculating aqueous media, enabling long-term stability of reactor performance.

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Performance of trickle-bed bioreactors for converting synthesis gas to methane

Cited by 46 publications

References 17 publications

Rapid bio-methanation of syngas in a reverse membrane bioreactor: Membrane encased microorganisms

Rapid bio-methanation of syngas in a reverse membrane bioreactor: Membrane encased microorganisms

A review of conversion processes for bioethanol production with a focus on syngas fermentation

Microbial Removal of Alkanes from Dilute Gaseous Waste Streams: Kinetics and Mass Transfer Considerations

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