Biological sulfate reduction using synthesis gas as energy and carbon source

Houten, R.T. van; Spoel, H. van der; Aelst, A.C. van; Pol, L.W. Hulshoff; Lettinga, G.

doi:10.1002/(sici)1097-0290(19960420)50:2<136::aid-bit3>3.0.co;2-n

Cited by 60 publications

(18 citation statements)

References 12 publications

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“…Many potential applications of H 2 ‐rich gasses are strongly inhibited by the presence of CO; i.e. 10% CO for biological sulfate reduction with synthesis gas [9] or 20 ppm for hydrogen fuel cell applications [10]. In particular the biological formation of H 2 from CO is attractive for upgrading synthesis gas.…”

Section: Introductionmentioning

confidence: 99%

Carbon monoxide conversion by anaerobic bioreactor sludges

Sipma

Lens

Stams

et al. 2003

FEMS Microbiology Ecology

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Seven different anaerobic sludges from wastewater treatment reactors were screened for their ability to convert carbon monoxide (CO) at 30 and 55 degrees C. At 30 degrees C, CO was converted to methane and/or acetate by all tested sludges. Inhibition experiments, using 2-bromoethanesulfonic acid and vancomycine, showed that CO conversion to methane at 30 degrees C occurred via acetate, but not via H2. At 55 degrees C, four sludges originally cultivated at 30-35 degrees C and one sludge cultivated at 55 degrees C converted CO rapidly into hydrogen or into methane. In the latter case, inhibition experiments showed that methane was formed via hydrogen as the intermediate.

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Section: Introductionmentioning

confidence: 99%

Carbon monoxide conversion by anaerobic bioreactor sludges

Sipma

Lens

Stams

et al. 2003

FEMS Microbiology Ecology

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“…In any potential application of SRB bioreactors, the selection of electron donor source is expected to have an impact on the economics of the process and will be a site‐specific design criterion. Lactic acid, ethanol, hydrogen, synthesis gas, and sewage digest have been utilized as electron donors (Apel and Barnes, 1993; Kaufman et al, 1996, 1997; Hiligsman et al, 1996; Dasu and Sublette, 1989; Paques and HTS, 1995; Buisman et al, 1995; Hammock and Edenborn, 1992; Du Preez et al, 1992; van Houten et al, 1996; Selvaraj and Sublette, 1995; Selvaraj et al, 1996) . While lactic acid and ethanol may be utilized in very specific situations where their availability is fortuitous, they are probably too expensive to be used as feedstocks for the process.…”

Section: Introductionmentioning

confidence: 99%

Biodesulfurization of Flue Gases and Other Sulfate/Sulfite Waste Streams Using Immobilized Mixed Sulfate-Reducing Bacteria

1997

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Sulfur dioxide (SO2) is one of the major pollutants in the atmosphere that cause acid rain. Microbial processes for reducing SO2 to hydrogen sulfide (H2S) have previously been demonstrated by utilizing mixed cultures of sulfate-reducing bacteria (SRB) with municipal sewage digest as the carbon and energy source. To maximize the productivity of the bioreactor for SO2 reduction in this study, various immobilized cell bioreactors were investigated: a stirred tank with SRB flocs and columnar reactors with cells immobilized in either potassium-carrageenan gel matrix or polymeric porous BIO-SEP beads. The maximum volumetric productivity for SO2 reduction in the continuous stirred-tank reactor (CSTR) with SRB flocs was 2.1 mmol of SO2/(h.L). The potassium-carrageenan gell matrix used for cell immobilization was not durable at feed sulfite concentrations greater than 2000 mg/L (1.7 mmol/(h.L)). A columnar reactor with mixed SRB cells that had been allowed to grow into highly stable BIO-SEP polymeric beads exhibited the highest sulfite conversion rates, in the range 16.5 mmol/(h.L) (with 100% conversion) to 20 mmol/(h.L) (with 95% conversion). The average specific activity for sulfite reduction in the column, in terms of dry weight of SRB biomass, was 9.5 mmol of sulfite/(h.g). In addition to flue gas desulfurization, potential applications of this microbial process include the treatment of sulfate/sulfite-laden wastewater from the pulp and paper, petroleum, mining, and chemical industries.

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“…Alternatively the untreated synthesis gas, including the CO, could be fed to the SR bioreactor. Van Houten (1995b) found that the SR rate dropped from 12 to 14 g SO 4 2-L -1 day -1 to 6-8 g SO 4 2-L -1 day -1 when adding 5% CO to the H 2 /CO 2 feed gas. Increasing the percentage CO to 20% did not further deteriorate the SR rate.…”

Section: Synthesis Gasmentioning

confidence: 99%

Biotechnological aspects of sulfate reduction with methane as electron donor

Meulepas

Stams

Lens

2010

Rev Environ Sci Biotechnol

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Biological sulfate reduction can be used for the removal and recovery of oxidized sulfur compounds and metals from waste streams. However, the costs of conventional electron donors, like hydrogen and ethanol, limit the application possibilities. Methane from natural gas or biogas would be a more attractive electron donor. Sulfate reduction with methane as electron donor prevails in marine sediments. Recently, several authors succeeded in cultivating the responsible microorganisms in vitro. In addition, the process has been studied in bioreactors. These studies have opened up the possibility to use methane as electron donor for sulfate reduction in wastewater and gas treatment. However, the obtained growth rates of the responsible microorganisms are extremely low, which would be a major limitation for applications. Therefore, further research should focus on novel cultivation techniques.

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Biological sulfate reduction using synthesis gas as energy and carbon source

Cited by 60 publications

References 12 publications

Carbon monoxide conversion by anaerobic bioreactor sludges

Carbon monoxide conversion by anaerobic bioreactor sludges

Biodesulfurization of Flue Gases and Other Sulfate/Sulfite Waste Streams Using Immobilized Mixed Sulfate-Reducing Bacteria

Biotechnological aspects of sulfate reduction with methane as electron donor

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