Effect of environmental conditions on sulfate reduction with methane as electron donor by an Eckernförde Bay enrichment

Roel J W Meulepas; Christian G. Jagersma; Ahmad F. Khadem; Cees J N Buisman; Alfons J M Stams; Piet N L Lens

doi:10.1021/es900633c

Effect of environmental conditions on sulfate reduction with methane as electron donor by an Eckernförde Bay enrichment

Roel J W Meulepas, Christian G. Jagersma, Ahmad F. Khadem, Cees J N Buisman, Alfons J M Stams, Piet N L Lens

Research output: Contribution to journal › Article › Academic › peer-review

28 Citations (Scopus)

Abstract

Sulfate reduction (SR) coupled to anaerobic oxidation of methane (AOM) is meditated by marine microorganisms and forms an important process in the global sulfur and carbon cycle. In this research, the possibility to use this process for the removal and recovery of sulfur and metal compounds from waste streams was investigated. A membrane bioreactor was used to enrich for a community of methane-oxidizing sulfate-reducing microorganisms from Eckernförde Bay sediment. The AOM and SR rate of the obtained enrichment were 1.0 mmol g _VSS ^-1 d^-1. The operational window and optimal environmental conditions for SR with methane as electron donor were assessed. The optimum pH, salinity, and temperature were 7.5, 30‰ and 20° C, respectively. The enrichment had a good affinity for sulfate (K_m < 0.5 mM) and a low affinity for methane (K_m < 0.075 MPa). AOM coupled to SR was completely inhibited at 2.4 (±0.1) mM sulfide. AOM occurred with sulfate, thiosulfate, and sulfite as electron acceptors. Sulfate reduction with methane as electron donor can be applied for the removal of sulfate or for the production of sulfide, for metal precipitation. However, the low optimal temperature and the high salt requirement limit the operational window of the process.

Original language	English
Pages (from-to)	6553-6559
Number of pages	7
Journal	Environmental Science and Technology
Volume	43
Issue number	17
DOIs	https://doi.org/10.1021/es900633c
Publication status	Published - 1 Sept 2009
Externally published	Yes

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@article{4e8fe85b31d94a3ca4ecfb21b267af54,

title = "Effect of environmental conditions on sulfate reduction with methane as electron donor by an Eckernf{\"o}rde Bay enrichment",

abstract = "Sulfate reduction (SR) coupled to anaerobic oxidation of methane (AOM) is meditated by marine microorganisms and forms an important process in the global sulfur and carbon cycle. In this research, the possibility to use this process for the removal and recovery of sulfur and metal compounds from waste streams was investigated. A membrane bioreactor was used to enrich for a community of methane-oxidizing sulfate-reducing microorganisms from Eckernf{\"o}rde Bay sediment. The AOM and SR rate of the obtained enrichment were 1.0 mmol g VSS -1 d-1. The operational window and optimal environmental conditions for SR with methane as electron donor were assessed. The optimum pH, salinity, and temperature were 7.5, 30‰ and 20° C, respectively. The enrichment had a good affinity for sulfate (Km < 0.5 mM) and a low affinity for methane (Km < 0.075 MPa). AOM coupled to SR was completely inhibited at 2.4 (±0.1) mM sulfide. AOM occurred with sulfate, thiosulfate, and sulfite as electron acceptors. Sulfate reduction with methane as electron donor can be applied for the removal of sulfate or for the production of sulfide, for metal precipitation. However, the low optimal temperature and the high salt requirement limit the operational window of the process.",

author = "Meulepas, {Roel J W} and Jagersma, {Christian G.} and Khadem, {Ahmad F.} and Buisman, {Cees J N} and Stams, {Alfons J M} and Lens, {Piet N L}",

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AU - Meulepas, Roel J W

AU - Jagersma, Christian G.

AU - Khadem, Ahmad F.

AU - Buisman, Cees J N

AU - Stams, Alfons J M

AU - Lens, Piet N L

PY - 2009/9/1

Y1 - 2009/9/1

N2 - Sulfate reduction (SR) coupled to anaerobic oxidation of methane (AOM) is meditated by marine microorganisms and forms an important process in the global sulfur and carbon cycle. In this research, the possibility to use this process for the removal and recovery of sulfur and metal compounds from waste streams was investigated. A membrane bioreactor was used to enrich for a community of methane-oxidizing sulfate-reducing microorganisms from Eckernförde Bay sediment. The AOM and SR rate of the obtained enrichment were 1.0 mmol g VSS -1 d-1. The operational window and optimal environmental conditions for SR with methane as electron donor were assessed. The optimum pH, salinity, and temperature were 7.5, 30‰ and 20° C, respectively. The enrichment had a good affinity for sulfate (Km < 0.5 mM) and a low affinity for methane (Km < 0.075 MPa). AOM coupled to SR was completely inhibited at 2.4 (±0.1) mM sulfide. AOM occurred with sulfate, thiosulfate, and sulfite as electron acceptors. Sulfate reduction with methane as electron donor can be applied for the removal of sulfate or for the production of sulfide, for metal precipitation. However, the low optimal temperature and the high salt requirement limit the operational window of the process.

AB - Sulfate reduction (SR) coupled to anaerobic oxidation of methane (AOM) is meditated by marine microorganisms and forms an important process in the global sulfur and carbon cycle. In this research, the possibility to use this process for the removal and recovery of sulfur and metal compounds from waste streams was investigated. A membrane bioreactor was used to enrich for a community of methane-oxidizing sulfate-reducing microorganisms from Eckernförde Bay sediment. The AOM and SR rate of the obtained enrichment were 1.0 mmol g VSS -1 d-1. The operational window and optimal environmental conditions for SR with methane as electron donor were assessed. The optimum pH, salinity, and temperature were 7.5, 30‰ and 20° C, respectively. The enrichment had a good affinity for sulfate (Km < 0.5 mM) and a low affinity for methane (Km < 0.075 MPa). AOM coupled to SR was completely inhibited at 2.4 (±0.1) mM sulfide. AOM occurred with sulfate, thiosulfate, and sulfite as electron acceptors. Sulfate reduction with methane as electron donor can be applied for the removal of sulfate or for the production of sulfide, for metal precipitation. However, the low optimal temperature and the high salt requirement limit the operational window of the process.

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Effect of environmental conditions on sulfate reduction with methane as electron donor by an Eckernförde Bay enrichment

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