Denitrifying sulfide removal by Pseudomonas sp. C27 at excess carbon supply: Mechanisms

Hongliang Guo; Chuan Chen; Duu-Jong Lee; Aijie Wang; Nanqi Ren

doi:10.1016/j.biortech.2015.01.030

Denitrifying sulfide removal by Pseudomonas sp. C27 at excess carbon supply: Mechanisms

Hongliang Guo, Chuan Chen, Duu-Jong Lee^*, Aijie Wang, Nanqi Ren

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

14 Citations (Scopus)

Abstract

Pseudomonas sp. C27 can effectively conduct mixotrophic denitrifying sulfide removal (DSR) reactions using both organic matters and sulfide as electron donors. This study conducted DSR tests using C27 and quantitatively analyzed the protein abundances at C/N. =. 1.26, 1.63 and 3.0. At C/N. =. 1.26, C27 principally adopted autotrophic denitrification pathway in DSR reaction. As C/N ratio was increased to 1.63, C27 enhanced heterotrophic denitrification pathway for removing nitrous compounds. As the C/N ratio was further increased to 3.0, C27 accelerated metabolism via coupled-cycles pathway. The C/N ratio for coupled-cycles pathway was estimated ranging 2.0-2.3 in the studied medium. Optimal C/N ratio of traditional DSR processes ranged 1.05-1.26. With the coupled-cycles pathway, the accessible C/N/S regime for C27 on DSR reactions is enlarged. Minor revision of the coupled-cycles pathway considering production of ammonium step was made.

Original language	English
Pages (from-to)	381-385
Journal	Bioresource Technology
Volume	180
DOIs	https://doi.org/10.1016/j.biortech.2015.01.030
Publication status	Published - 1 Mar 2015
Externally published	Yes

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Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Research Keywords

C/N ratio
DSR
Nitrate
Pseudomonas sp. C27
Sulfide

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title = "Denitrifying sulfide removal by Pseudomonas sp. C27 at excess carbon supply: Mechanisms",

abstract = "Pseudomonas sp. C27 can effectively conduct mixotrophic denitrifying sulfide removal (DSR) reactions using both organic matters and sulfide as electron donors. This study conducted DSR tests using C27 and quantitatively analyzed the protein abundances at C/N. =. 1.26, 1.63 and 3.0. At C/N. =. 1.26, C27 principally adopted autotrophic denitrification pathway in DSR reaction. As C/N ratio was increased to 1.63, C27 enhanced heterotrophic denitrification pathway for removing nitrous compounds. As the C/N ratio was further increased to 3.0, C27 accelerated metabolism via coupled-cycles pathway. The C/N ratio for coupled-cycles pathway was estimated ranging 2.0-2.3 in the studied medium. Optimal C/N ratio of traditional DSR processes ranged 1.05-1.26. With the coupled-cycles pathway, the accessible C/N/S regime for C27 on DSR reactions is enlarged. Minor revision of the coupled-cycles pathway considering production of ammonium step was made.",

keywords = "C/N ratio, DSR, Nitrate, Pseudomonas sp. C27, Sulfide",

author = "Hongliang Guo and Chuan Chen and Duu-Jong Lee and Aijie Wang and Nanqi Ren",

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TY - JOUR

T1 - Denitrifying sulfide removal by Pseudomonas sp. C27 at excess carbon supply

T2 - Mechanisms

AU - Guo, Hongliang

AU - Chen, Chuan

AU - Lee, Duu-Jong

AU - Wang, Aijie

AU - Ren, Nanqi

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2015/3/1

Y1 - 2015/3/1

N2 - Pseudomonas sp. C27 can effectively conduct mixotrophic denitrifying sulfide removal (DSR) reactions using both organic matters and sulfide as electron donors. This study conducted DSR tests using C27 and quantitatively analyzed the protein abundances at C/N. =. 1.26, 1.63 and 3.0. At C/N. =. 1.26, C27 principally adopted autotrophic denitrification pathway in DSR reaction. As C/N ratio was increased to 1.63, C27 enhanced heterotrophic denitrification pathway for removing nitrous compounds. As the C/N ratio was further increased to 3.0, C27 accelerated metabolism via coupled-cycles pathway. The C/N ratio for coupled-cycles pathway was estimated ranging 2.0-2.3 in the studied medium. Optimal C/N ratio of traditional DSR processes ranged 1.05-1.26. With the coupled-cycles pathway, the accessible C/N/S regime for C27 on DSR reactions is enlarged. Minor revision of the coupled-cycles pathway considering production of ammonium step was made.

AB - Pseudomonas sp. C27 can effectively conduct mixotrophic denitrifying sulfide removal (DSR) reactions using both organic matters and sulfide as electron donors. This study conducted DSR tests using C27 and quantitatively analyzed the protein abundances at C/N. =. 1.26, 1.63 and 3.0. At C/N. =. 1.26, C27 principally adopted autotrophic denitrification pathway in DSR reaction. As C/N ratio was increased to 1.63, C27 enhanced heterotrophic denitrification pathway for removing nitrous compounds. As the C/N ratio was further increased to 3.0, C27 accelerated metabolism via coupled-cycles pathway. The C/N ratio for coupled-cycles pathway was estimated ranging 2.0-2.3 in the studied medium. Optimal C/N ratio of traditional DSR processes ranged 1.05-1.26. With the coupled-cycles pathway, the accessible C/N/S regime for C27 on DSR reactions is enlarged. Minor revision of the coupled-cycles pathway considering production of ammonium step was made.

KW - C/N ratio

KW - DSR

KW - Nitrate

KW - Pseudomonas sp. C27

KW - Sulfide

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U2 - 10.1016/j.biortech.2015.01.030

DO - 10.1016/j.biortech.2015.01.030

M3 - RGC 21 - Publication in refereed journal

C2 - 25632013

SN - 0960-8524

VL - 180

SP - 381

EP - 385

JO - Bioresource Technology

JF - Bioresource Technology

ER -

Denitrifying sulfide removal by Pseudomonas sp. C27 at excess carbon supply: Mechanisms

Abstract

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