Methanogenesis and sulfate reduction in chemostats—I. Kinetic studies and experiments

Gupta, Ashutosh; Flora, Joseph R.V.; Gupta, M. P.; Sayles, Gregory D.; Suidan, Makram T.

doi:10.1016/0043-1354(94)90085-x

Cited by 67 publications

(26 citation statements)

References 19 publications

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“…For example, acetate-utilising SRB show growth kinetic parameters only slightly better than Methanosaeta, a common methanogen in bioreactors (Oude Elferink et al 1998). Gupta et al (1994) reported the prevalence of SRB over methanogens in acetate-fed chemostats, but there are also studies in which methanogens were not outcompeted by SRB (Omil et al 1996;O'Flaherty et al 1998a, b;Rodriguez et al 2012). Aceticlastic methanogens can prevail in the presence of sulphate, even after long-term reactor operation, as shown in the study from Colleran et al (1998).…”

Section: Competition Between Methanogens and Srbmentioning

confidence: 77%

Methanogens, sulphate and heavy metals: a complex system

Paulo

Stams

Sousa

2015

Rev Environ Sci Biotechnol

125

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Anaerobic digestion (AD) is a well-established technology used for the treatment of wastes and wastewaters with high organic content. During AD organic matter is converted stepwise to methanecontaining biogas-a renewable energy carrier. Methane production occurs in the last AD step and relies on methanogens, which are rather sensitive to some contaminants commonly found in wastewaters (e.g. heavy metals), or easily outcompeted by other groups of microorganisms (e.g. sulphate reducing bacteria, SRB). This review gives an overview of previous research and pilot-scale studies that shed some light on the effects of sulphate and heavy metals on methanogenesis. Despite the numerous studies on this subject, comparison is not always possible due to differences in the experimental conditions used and parameters explained. An overview of the possible benefits of methanogens and SRB co-habitation is also covered. Small amounts of sulphide produced by SRB can precipitate with metals, neutralising the negative effects of sulphide accumulation and free heavy metals on methanogenesis. Knowledge on how to untangle and balance sulphate reduction and methanogenesis is crucial to take advantage of the potential for the utilisation of biogenic sulphide as a metal detoxification agent with minimal loss in methane production in anaerobic digesters.

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Section: Competition Between Methanogens and Srbmentioning

confidence: 77%

Methanogens, sulphate and heavy metals: a complex system

Paulo

Stams

Sousa

2015

Rev Environ Sci Biotechnol

125

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“…Several studies have been conducted into the outcome of competition between SRB and MPB SchOnheit et al, 1982;Robinson and Tiedje, 1984;Isa et al, 1986a,b;Oude Elferink et al, 1994;Gupta et al, 1994a;Harada et al, 1994;Bhattacharya et al, 1996;Shin et al, 1996;Omit et al, 1998). From a kinetic point of view the Monod constants J.Lmax and Ks can give insight as to which group will predominate.…”

Section: Sulphate Reduction In Competition With Meth Anogenesismentioning

confidence: 99%

“…Gupta et al (1994a) have hypothesized that there is only a very narrow range of operating parameters in which SRB and MPB are able to coexist, and that a very slight change in one variable will result in the domination of one group over the other. It is hence apparent that in designing an anaerobic sulphate reducing reactor careful attention needs to be paid to ensure that reactor condition are optimal for maximum sulphate removal.…”

Section: Sulphate Reduction In Competition With Meth Anogenesismentioning

confidence: 99%

A mathematical model of a high sulphate wastewater anaerobic treatment system

Knobel

Lewis

2002

Water Research

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“…SRB possess a higher degree of growth limitations compared to MPA, due to their inhibition of sulfide accumulations in the cell, inhibition of growth and reduction of iron availability [7 -9]. Therefore, it is necessary to remove sulfide toxicity by precipitation with iron or use of H2S scrubbing techniques [10].…”

Section: Introductionmentioning

confidence: 99%

Degree of Sulfate‐Reducing Activities on COD Removal in Various Reactor Configurations in Anaerobic Glucose and Acetate‐fed Reactors

Erdirençelebi¹,

Öztürk

Çokgör

et al. 2007

CLEAN Soil Air Water

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Sulfate-reduction data from various anaerobic reactor configurations, e. g., upflow anaerobic sludge blanket reactor (UASBR), completely stirred tank reactor (CSTR), and batch reactor (BR) with synthetic wastewaters, having glucose and acetate as the substrates and different levels of sulfate, were evaluated to determine the level of sulfatereducing activity by sulfate-reducing bacteria coupled to organic matter removal. Anaerobic reactors were observed for the degree of competition between sulfatereducing sulfidogens and methane producing bacteria during the degradation of glucose and acetate. Low sulfate-reducing activity was obtained with a maximum of 20% of organic matter degradation with glucose-fed upflow anaerobic sludge bed reactors (UASBRs), while a minimum of 2% was observed with acetate-fed batch reactors. The highest sulfate removal performance (72 -89%) was obtained from glucose fed-UASB reactors, with the best results observed with increasing COD/SO 4 ratios. UASB reactors produced the highest level of sulfidogenic activity, with the highest sulfate removal and without a performance loss. Hence, this was shown to be the optimum reactor configuration. Dissolved sulfide produced as a result of sulfate reduction reached 325 mg/L and 390 mg/L in CST and UASB reactors, respectively, and these levels were tolerated. The sulfate removal rate was higher at lower COD/SO 4 ratios, but the degree of sulfate removal improved with increasing COD/SO 4 ratios.

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Methanogenesis and sulfate reduction in chemostats—I. Kinetic studies and experiments

Cited by 67 publications

References 19 publications

Methanogens, sulphate and heavy metals: a complex system

Methanogens, sulphate and heavy metals: a complex system

A mathematical model of a high sulphate wastewater anaerobic treatment system

Degree of Sulfate‐Reducing Activities on COD Removal in Various Reactor Configurations in Anaerobic Glucose and Acetate‐fed Reactors

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