Gratuitous dechlorination of chloroethanes by methanogenic granular sludge
Abstract The dechlorinating activity of a methanogenic granular sludge from a methanol-fed upflow anaerobic sludge blanket reactor was investigated with chlorinated ethanes. This unadapted methanogenic consortium degraded all chloroethanes tested. The product formation rates decreased with the numbe...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
van Eekert, M. H. A. [verfasserIn] |
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| Format: |
Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
1999 |
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| Schlagwörter: |
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| Anmerkung: |
© Springer-Verlag Berlin Heidelberg 1999 |
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| Übergeordnetes Werk: |
Enthalten in: Applied microbiology and biotechnology - Springer-Verlag, 1984, 51(1999), 1 vom: Jan., Seite 46-52 |
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| Übergeordnetes Werk: |
volume:51 ; year:1999 ; number:1 ; month:01 ; pages:46-52 |
| Links: |
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| DOI / URN: |
10.1007/s002530051361 |
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| Katalog-ID: |
OLC2050684428 |
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| 520 | |a Abstract The dechlorinating activity of a methanogenic granular sludge from a methanol-fed upflow anaerobic sludge blanket reactor was investigated with chlorinated ethanes. This unadapted methanogenic consortium degraded all chloroethanes tested. The product formation rates decreased with the number of chlorine substituents. The more highly chlorinated ethanes were also converted, although at a lower rate, in the presence of autoclaved (dead) sludge, indicating the involvement of reduced heat-stable cofactors like vitamin $ B_{12} $ and $ F_{430} $. Direct chemical dechlorination of hexa-, penta- and tetrachloroethanes was also observed in medium without sludge, although at a much lower rate. The results show the importance of cometabolic and abiotic (chemical) conversions for the transformation of chlorinated ethanes by the methanogenic consortium. The types of reaction and the products formed were correlated with the Gibbs free-energy change (ΔG0′). Reductive hydrogenolysis and dichloroelimination were important dechlorinating mechanisms. Generally, these reactions have a higher ΔG0′ value than dehydrochlorination reactions, which occurred less frequently during the transformation of chloroethanes by the methanogenic granular sludge. | ||
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| 650 | 4 | |a Tetrachloroethanes | |
| 700 | 1 | |a Stams, A. J. M. |4 aut | |
| 700 | 1 | |a Field, J. A. |4 aut | |
| 700 | 1 | |a Schraa, G. |4 aut | |
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10.1007/s002530051361 doi (DE-627)OLC2050684428 (DE-He213)s002530051361-p DE-627 ger DE-627 rakwb eng 570 VZ 12 ssgn BIODIV DE-30 fid van Eekert, M. H. A. verfasserin aut Gratuitous dechlorination of chloroethanes by methanogenic granular sludge 1999 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag Berlin Heidelberg 1999 Abstract The dechlorinating activity of a methanogenic granular sludge from a methanol-fed upflow anaerobic sludge blanket reactor was investigated with chlorinated ethanes. This unadapted methanogenic consortium degraded all chloroethanes tested. The product formation rates decreased with the number of chlorine substituents. The more highly chlorinated ethanes were also converted, although at a lower rate, in the presence of autoclaved (dead) sludge, indicating the involvement of reduced heat-stable cofactors like vitamin $ B_{12} $ and $ F_{430} $. Direct chemical dechlorination of hexa-, penta- and tetrachloroethanes was also observed in medium without sludge, although at a much lower rate. The results show the importance of cometabolic and abiotic (chemical) conversions for the transformation of chlorinated ethanes by the methanogenic consortium. The types of reaction and the products formed were correlated with the Gibbs free-energy change (ΔG0′). Reductive hydrogenolysis and dichloroelimination were important dechlorinating mechanisms. Generally, these reactions have a higher ΔG0′ value than dehydrochlorination reactions, which occurred less frequently during the transformation of chloroethanes by the methanogenic granular sludge. Sludge Ethane Anaerobic Sludge Upflow Anaerobic Sludge Blanket Tetrachloroethanes Stams, A. J. M. aut Field, J. A. aut Schraa, G. aut Enthalten in Applied microbiology and biotechnology Springer-Verlag, 1984 51(1999), 1 vom: Jan., Seite 46-52 (DE-627)129942634 (DE-600)392453-1 (DE-576)015507750 0175-7598 nnns volume:51 year:1999 number:1 month:01 pages:46-52 https://doi.org/10.1007/s002530051361 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC FID-BIODIV SSG-OLC-TEC SSG-OLC-CHE SSG-OLC-PHA SSG-OLC-DE-84 GBV_ILN_11 GBV_ILN_21 GBV_ILN_23 GBV_ILN_31 GBV_ILN_40 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_130 GBV_ILN_147 GBV_ILN_252 GBV_ILN_267 GBV_ILN_2018 GBV_ILN_2360 GBV_ILN_4012 GBV_ILN_4028 GBV_ILN_4046 GBV_ILN_4082 GBV_ILN_4277 GBV_ILN_4302 GBV_ILN_4307 GBV_ILN_4310 AR 51 1999 1 01 46-52 |
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10.1007/s002530051361 doi (DE-627)OLC2050684428 (DE-He213)s002530051361-p DE-627 ger DE-627 rakwb eng 570 VZ 12 ssgn BIODIV DE-30 fid van Eekert, M. H. A. verfasserin aut Gratuitous dechlorination of chloroethanes by methanogenic granular sludge 1999 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag Berlin Heidelberg 1999 Abstract The dechlorinating activity of a methanogenic granular sludge from a methanol-fed upflow anaerobic sludge blanket reactor was investigated with chlorinated ethanes. This unadapted methanogenic consortium degraded all chloroethanes tested. The product formation rates decreased with the number of chlorine substituents. The more highly chlorinated ethanes were also converted, although at a lower rate, in the presence of autoclaved (dead) sludge, indicating the involvement of reduced heat-stable cofactors like vitamin $ B_{12} $ and $ F_{430} $. Direct chemical dechlorination of hexa-, penta- and tetrachloroethanes was also observed in medium without sludge, although at a much lower rate. The results show the importance of cometabolic and abiotic (chemical) conversions for the transformation of chlorinated ethanes by the methanogenic consortium. The types of reaction and the products formed were correlated with the Gibbs free-energy change (ΔG0′). Reductive hydrogenolysis and dichloroelimination were important dechlorinating mechanisms. Generally, these reactions have a higher ΔG0′ value than dehydrochlorination reactions, which occurred less frequently during the transformation of chloroethanes by the methanogenic granular sludge. Sludge Ethane Anaerobic Sludge Upflow Anaerobic Sludge Blanket Tetrachloroethanes Stams, A. J. M. aut Field, J. A. aut Schraa, G. aut Enthalten in Applied microbiology and biotechnology Springer-Verlag, 1984 51(1999), 1 vom: Jan., Seite 46-52 (DE-627)129942634 (DE-600)392453-1 (DE-576)015507750 0175-7598 nnns volume:51 year:1999 number:1 month:01 pages:46-52 https://doi.org/10.1007/s002530051361 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC FID-BIODIV SSG-OLC-TEC SSG-OLC-CHE SSG-OLC-PHA SSG-OLC-DE-84 GBV_ILN_11 GBV_ILN_21 GBV_ILN_23 GBV_ILN_31 GBV_ILN_40 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_130 GBV_ILN_147 GBV_ILN_252 GBV_ILN_267 GBV_ILN_2018 GBV_ILN_2360 GBV_ILN_4012 GBV_ILN_4028 GBV_ILN_4046 GBV_ILN_4082 GBV_ILN_4277 GBV_ILN_4302 GBV_ILN_4307 GBV_ILN_4310 AR 51 1999 1 01 46-52 |
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10.1007/s002530051361 doi (DE-627)OLC2050684428 (DE-He213)s002530051361-p DE-627 ger DE-627 rakwb eng 570 VZ 12 ssgn BIODIV DE-30 fid van Eekert, M. H. A. verfasserin aut Gratuitous dechlorination of chloroethanes by methanogenic granular sludge 1999 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag Berlin Heidelberg 1999 Abstract The dechlorinating activity of a methanogenic granular sludge from a methanol-fed upflow anaerobic sludge blanket reactor was investigated with chlorinated ethanes. This unadapted methanogenic consortium degraded all chloroethanes tested. The product formation rates decreased with the number of chlorine substituents. The more highly chlorinated ethanes were also converted, although at a lower rate, in the presence of autoclaved (dead) sludge, indicating the involvement of reduced heat-stable cofactors like vitamin $ B_{12} $ and $ F_{430} $. Direct chemical dechlorination of hexa-, penta- and tetrachloroethanes was also observed in medium without sludge, although at a much lower rate. The results show the importance of cometabolic and abiotic (chemical) conversions for the transformation of chlorinated ethanes by the methanogenic consortium. The types of reaction and the products formed were correlated with the Gibbs free-energy change (ΔG0′). Reductive hydrogenolysis and dichloroelimination were important dechlorinating mechanisms. Generally, these reactions have a higher ΔG0′ value than dehydrochlorination reactions, which occurred less frequently during the transformation of chloroethanes by the methanogenic granular sludge. Sludge Ethane Anaerobic Sludge Upflow Anaerobic Sludge Blanket Tetrachloroethanes Stams, A. J. M. aut Field, J. A. aut Schraa, G. aut Enthalten in Applied microbiology and biotechnology Springer-Verlag, 1984 51(1999), 1 vom: Jan., Seite 46-52 (DE-627)129942634 (DE-600)392453-1 (DE-576)015507750 0175-7598 nnns volume:51 year:1999 number:1 month:01 pages:46-52 https://doi.org/10.1007/s002530051361 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC FID-BIODIV SSG-OLC-TEC SSG-OLC-CHE SSG-OLC-PHA SSG-OLC-DE-84 GBV_ILN_11 GBV_ILN_21 GBV_ILN_23 GBV_ILN_31 GBV_ILN_40 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_130 GBV_ILN_147 GBV_ILN_252 GBV_ILN_267 GBV_ILN_2018 GBV_ILN_2360 GBV_ILN_4012 GBV_ILN_4028 GBV_ILN_4046 GBV_ILN_4082 GBV_ILN_4277 GBV_ILN_4302 GBV_ILN_4307 GBV_ILN_4310 AR 51 1999 1 01 46-52 |
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10.1007/s002530051361 doi (DE-627)OLC2050684428 (DE-He213)s002530051361-p DE-627 ger DE-627 rakwb eng 570 VZ 12 ssgn BIODIV DE-30 fid van Eekert, M. H. A. verfasserin aut Gratuitous dechlorination of chloroethanes by methanogenic granular sludge 1999 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag Berlin Heidelberg 1999 Abstract The dechlorinating activity of a methanogenic granular sludge from a methanol-fed upflow anaerobic sludge blanket reactor was investigated with chlorinated ethanes. This unadapted methanogenic consortium degraded all chloroethanes tested. The product formation rates decreased with the number of chlorine substituents. The more highly chlorinated ethanes were also converted, although at a lower rate, in the presence of autoclaved (dead) sludge, indicating the involvement of reduced heat-stable cofactors like vitamin $ B_{12} $ and $ F_{430} $. Direct chemical dechlorination of hexa-, penta- and tetrachloroethanes was also observed in medium without sludge, although at a much lower rate. The results show the importance of cometabolic and abiotic (chemical) conversions for the transformation of chlorinated ethanes by the methanogenic consortium. The types of reaction and the products formed were correlated with the Gibbs free-energy change (ΔG0′). Reductive hydrogenolysis and dichloroelimination were important dechlorinating mechanisms. Generally, these reactions have a higher ΔG0′ value than dehydrochlorination reactions, which occurred less frequently during the transformation of chloroethanes by the methanogenic granular sludge. Sludge Ethane Anaerobic Sludge Upflow Anaerobic Sludge Blanket Tetrachloroethanes Stams, A. J. M. aut Field, J. A. aut Schraa, G. aut Enthalten in Applied microbiology and biotechnology Springer-Verlag, 1984 51(1999), 1 vom: Jan., Seite 46-52 (DE-627)129942634 (DE-600)392453-1 (DE-576)015507750 0175-7598 nnns volume:51 year:1999 number:1 month:01 pages:46-52 https://doi.org/10.1007/s002530051361 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC FID-BIODIV SSG-OLC-TEC SSG-OLC-CHE SSG-OLC-PHA SSG-OLC-DE-84 GBV_ILN_11 GBV_ILN_21 GBV_ILN_23 GBV_ILN_31 GBV_ILN_40 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_130 GBV_ILN_147 GBV_ILN_252 GBV_ILN_267 GBV_ILN_2018 GBV_ILN_2360 GBV_ILN_4012 GBV_ILN_4028 GBV_ILN_4046 GBV_ILN_4082 GBV_ILN_4277 GBV_ILN_4302 GBV_ILN_4307 GBV_ILN_4310 AR 51 1999 1 01 46-52 |
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10.1007/s002530051361 doi (DE-627)OLC2050684428 (DE-He213)s002530051361-p DE-627 ger DE-627 rakwb eng 570 VZ 12 ssgn BIODIV DE-30 fid van Eekert, M. H. A. verfasserin aut Gratuitous dechlorination of chloroethanes by methanogenic granular sludge 1999 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag Berlin Heidelberg 1999 Abstract The dechlorinating activity of a methanogenic granular sludge from a methanol-fed upflow anaerobic sludge blanket reactor was investigated with chlorinated ethanes. This unadapted methanogenic consortium degraded all chloroethanes tested. The product formation rates decreased with the number of chlorine substituents. The more highly chlorinated ethanes were also converted, although at a lower rate, in the presence of autoclaved (dead) sludge, indicating the involvement of reduced heat-stable cofactors like vitamin $ B_{12} $ and $ F_{430} $. Direct chemical dechlorination of hexa-, penta- and tetrachloroethanes was also observed in medium without sludge, although at a much lower rate. The results show the importance of cometabolic and abiotic (chemical) conversions for the transformation of chlorinated ethanes by the methanogenic consortium. The types of reaction and the products formed were correlated with the Gibbs free-energy change (ΔG0′). Reductive hydrogenolysis and dichloroelimination were important dechlorinating mechanisms. Generally, these reactions have a higher ΔG0′ value than dehydrochlorination reactions, which occurred less frequently during the transformation of chloroethanes by the methanogenic granular sludge. Sludge Ethane Anaerobic Sludge Upflow Anaerobic Sludge Blanket Tetrachloroethanes Stams, A. J. M. aut Field, J. A. aut Schraa, G. aut Enthalten in Applied microbiology and biotechnology Springer-Verlag, 1984 51(1999), 1 vom: Jan., Seite 46-52 (DE-627)129942634 (DE-600)392453-1 (DE-576)015507750 0175-7598 nnns volume:51 year:1999 number:1 month:01 pages:46-52 https://doi.org/10.1007/s002530051361 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC FID-BIODIV SSG-OLC-TEC SSG-OLC-CHE SSG-OLC-PHA SSG-OLC-DE-84 GBV_ILN_11 GBV_ILN_21 GBV_ILN_23 GBV_ILN_31 GBV_ILN_40 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_130 GBV_ILN_147 GBV_ILN_252 GBV_ILN_267 GBV_ILN_2018 GBV_ILN_2360 GBV_ILN_4012 GBV_ILN_4028 GBV_ILN_4046 GBV_ILN_4082 GBV_ILN_4277 GBV_ILN_4302 GBV_ILN_4307 GBV_ILN_4310 AR 51 1999 1 01 46-52 |
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Enthalten in Applied microbiology and biotechnology 51(1999), 1 vom: Jan., Seite 46-52 volume:51 year:1999 number:1 month:01 pages:46-52 |
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Enthalten in Applied microbiology and biotechnology 51(1999), 1 vom: Jan., Seite 46-52 volume:51 year:1999 number:1 month:01 pages:46-52 |
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gratuitous dechlorination of chloroethanes by methanogenic granular sludge |
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Gratuitous dechlorination of chloroethanes by methanogenic granular sludge |
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Abstract The dechlorinating activity of a methanogenic granular sludge from a methanol-fed upflow anaerobic sludge blanket reactor was investigated with chlorinated ethanes. This unadapted methanogenic consortium degraded all chloroethanes tested. The product formation rates decreased with the number of chlorine substituents. The more highly chlorinated ethanes were also converted, although at a lower rate, in the presence of autoclaved (dead) sludge, indicating the involvement of reduced heat-stable cofactors like vitamin $ B_{12} $ and $ F_{430} $. Direct chemical dechlorination of hexa-, penta- and tetrachloroethanes was also observed in medium without sludge, although at a much lower rate. The results show the importance of cometabolic and abiotic (chemical) conversions for the transformation of chlorinated ethanes by the methanogenic consortium. The types of reaction and the products formed were correlated with the Gibbs free-energy change (ΔG0′). Reductive hydrogenolysis and dichloroelimination were important dechlorinating mechanisms. Generally, these reactions have a higher ΔG0′ value than dehydrochlorination reactions, which occurred less frequently during the transformation of chloroethanes by the methanogenic granular sludge. © Springer-Verlag Berlin Heidelberg 1999 |
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Abstract The dechlorinating activity of a methanogenic granular sludge from a methanol-fed upflow anaerobic sludge blanket reactor was investigated with chlorinated ethanes. This unadapted methanogenic consortium degraded all chloroethanes tested. The product formation rates decreased with the number of chlorine substituents. The more highly chlorinated ethanes were also converted, although at a lower rate, in the presence of autoclaved (dead) sludge, indicating the involvement of reduced heat-stable cofactors like vitamin $ B_{12} $ and $ F_{430} $. Direct chemical dechlorination of hexa-, penta- and tetrachloroethanes was also observed in medium without sludge, although at a much lower rate. The results show the importance of cometabolic and abiotic (chemical) conversions for the transformation of chlorinated ethanes by the methanogenic consortium. The types of reaction and the products formed were correlated with the Gibbs free-energy change (ΔG0′). Reductive hydrogenolysis and dichloroelimination were important dechlorinating mechanisms. Generally, these reactions have a higher ΔG0′ value than dehydrochlorination reactions, which occurred less frequently during the transformation of chloroethanes by the methanogenic granular sludge. © Springer-Verlag Berlin Heidelberg 1999 |
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Abstract The dechlorinating activity of a methanogenic granular sludge from a methanol-fed upflow anaerobic sludge blanket reactor was investigated with chlorinated ethanes. This unadapted methanogenic consortium degraded all chloroethanes tested. The product formation rates decreased with the number of chlorine substituents. The more highly chlorinated ethanes were also converted, although at a lower rate, in the presence of autoclaved (dead) sludge, indicating the involvement of reduced heat-stable cofactors like vitamin $ B_{12} $ and $ F_{430} $. Direct chemical dechlorination of hexa-, penta- and tetrachloroethanes was also observed in medium without sludge, although at a much lower rate. The results show the importance of cometabolic and abiotic (chemical) conversions for the transformation of chlorinated ethanes by the methanogenic consortium. The types of reaction and the products formed were correlated with the Gibbs free-energy change (ΔG0′). Reductive hydrogenolysis and dichloroelimination were important dechlorinating mechanisms. Generally, these reactions have a higher ΔG0′ value than dehydrochlorination reactions, which occurred less frequently during the transformation of chloroethanes by the methanogenic granular sludge. © Springer-Verlag Berlin Heidelberg 1999 |
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