Remediation of nitrogen polluted water using Fe–C microelectrolysis and biofiltration under mixotrophic conditions
A hybrid biofilter was established on Fe–C supported carriers aimed to enhance nitrogen removal from polluted water of low Carbon/Nitrogen (C/N) ratio. Effects of organic loadings, hydraulic retention time (HRT), additional electron donor (Fe2+) supplementation and operation mode on the performance...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Quan, Xiangchun [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2020transfer abstract |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
Enthalten in: MPI vs Fortran coarrays beyond 100k cores: 3D cellular automata - Shterenlikht, Anton ELSEVIER, 2019, chemistry, biology and toxicology as related to environmental problems, Amsterdam [u.a.] |
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| Übergeordnetes Werk: |
volume:257 ; year:2020 ; pages:0 |
| Links: |
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| DOI / URN: |
10.1016/j.chemosphere.2020.127272 |
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ELV050881132 |
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| 245 | 1 | 0 | |a Remediation of nitrogen polluted water using Fe–C microelectrolysis and biofiltration under mixotrophic conditions |
| 264 | 1 | |c 2020transfer abstract | |
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| 520 | |a A hybrid biofilter was established on Fe–C supported carriers aimed to enhance nitrogen removal from polluted water of low Carbon/Nitrogen (C/N) ratio. Effects of organic loadings, hydraulic retention time (HRT), additional electron donor (Fe2+) supplementation and operation mode on the performance of the biofilter were investigated. Results showed that up-flow operation mode was better than down-flow mode in terms of nitrate and total nitrogen (TN) removal at low COD/N. The average removal of NO3 −-N, NH4 + –N and TN attained 83.1%, 84.7% and 81.2%, respectively, under the conditions of influent COD/NO3 −-N = 1.5–3.6, HRT = 10 h and up-flow operation. When the biofilter was operated under autotrophic conditions without organic compounds in influent as electron donors, the biofilter achieved a NO3 −-N removal of 46% and TN removal of 56% depending on the innate electron donors provided by the Fe–C carriers. Supplementation of Fe2+ in influent further promoted autotrophic denitrifying process, and the removal of NO3 −-N and TN increased to 96.3% and 84.7%, respectively, at the mol ratio of Fe2+/NO3 − = 10 and HRT = 10 h. The microbial community was analyzed for the biofilm samples enriched under heterotrophic and autotrophic conditions. The Fe–C biofilter boosted the growth of a large population of mixotrophic denitrifying bacteria including Gallionella, heterotrophic denitrifying bacteria Denitratisoma, and autotrophic denitrifying bacteria Thiobacillus and Thioalkalispira. On the whole, the biofilter coupled with Fe–C micro-electrolysis provides a novel strategy to treat polluted water of low C/N under both heterotrophic and autotrophic conditions. | ||
| 520 | |a A hybrid biofilter was established on Fe–C supported carriers aimed to enhance nitrogen removal from polluted water of low Carbon/Nitrogen (C/N) ratio. Effects of organic loadings, hydraulic retention time (HRT), additional electron donor (Fe2+) supplementation and operation mode on the performance of the biofilter were investigated. Results showed that up-flow operation mode was better than down-flow mode in terms of nitrate and total nitrogen (TN) removal at low COD/N. The average removal of NO3 −-N, NH4 + –N and TN attained 83.1%, 84.7% and 81.2%, respectively, under the conditions of influent COD/NO3 −-N = 1.5–3.6, HRT = 10 h and up-flow operation. When the biofilter was operated under autotrophic conditions without organic compounds in influent as electron donors, the biofilter achieved a NO3 −-N removal of 46% and TN removal of 56% depending on the innate electron donors provided by the Fe–C carriers. Supplementation of Fe2+ in influent further promoted autotrophic denitrifying process, and the removal of NO3 −-N and TN increased to 96.3% and 84.7%, respectively, at the mol ratio of Fe2+/NO3 − = 10 and HRT = 10 h. The microbial community was analyzed for the biofilm samples enriched under heterotrophic and autotrophic conditions. The Fe–C biofilter boosted the growth of a large population of mixotrophic denitrifying bacteria including Gallionella, heterotrophic denitrifying bacteria Denitratisoma, and autotrophic denitrifying bacteria Thiobacillus and Thioalkalispira. On the whole, the biofilter coupled with Fe–C micro-electrolysis provides a novel strategy to treat polluted water of low C/N under both heterotrophic and autotrophic conditions. | ||
| 650 | 7 | |a Denitrification |2 Elsevier | |
| 650 | 7 | |a Biofilter |2 Elsevier | |
| 650 | 7 | |a Nitrogen |2 Elsevier | |
| 650 | 7 | |a Micro-electrolysis |2 Elsevier | |
| 700 | 1 | |a Zhang, Haifeng |4 oth | |
| 700 | 1 | |a Liu, Hezun |4 oth | |
| 700 | 1 | |a Chen, Liang |4 oth | |
| 700 | 1 | |a Li, Naiyu |4 oth | |
| 773 | 0 | 8 | |i Enthalten in |n Elsevier Science |a Shterenlikht, Anton ELSEVIER |t MPI vs Fortran coarrays beyond 100k cores: 3D cellular automata |d 2019 |d chemistry, biology and toxicology as related to environmental problems |g Amsterdam [u.a.] |w (DE-627)ELV002112701 |
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10.1016/j.chemosphere.2020.127272 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001076.pica (DE-627)ELV050881132 (ELSEVIER)S0045-6535(20)31465-X DE-627 ger DE-627 rakwb eng 004 620 VZ 54.25 bkl Quan, Xiangchun verfasserin aut Remediation of nitrogen polluted water using Fe–C microelectrolysis and biofiltration under mixotrophic conditions 2020transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier A hybrid biofilter was established on Fe–C supported carriers aimed to enhance nitrogen removal from polluted water of low Carbon/Nitrogen (C/N) ratio. Effects of organic loadings, hydraulic retention time (HRT), additional electron donor (Fe2+) supplementation and operation mode on the performance of the biofilter were investigated. Results showed that up-flow operation mode was better than down-flow mode in terms of nitrate and total nitrogen (TN) removal at low COD/N. The average removal of NO3 −-N, NH4 + –N and TN attained 83.1%, 84.7% and 81.2%, respectively, under the conditions of influent COD/NO3 −-N = 1.5–3.6, HRT = 10 h and up-flow operation. When the biofilter was operated under autotrophic conditions without organic compounds in influent as electron donors, the biofilter achieved a NO3 −-N removal of 46% and TN removal of 56% depending on the innate electron donors provided by the Fe–C carriers. Supplementation of Fe2+ in influent further promoted autotrophic denitrifying process, and the removal of NO3 −-N and TN increased to 96.3% and 84.7%, respectively, at the mol ratio of Fe2+/NO3 − = 10 and HRT = 10 h. The microbial community was analyzed for the biofilm samples enriched under heterotrophic and autotrophic conditions. The Fe–C biofilter boosted the growth of a large population of mixotrophic denitrifying bacteria including Gallionella, heterotrophic denitrifying bacteria Denitratisoma, and autotrophic denitrifying bacteria Thiobacillus and Thioalkalispira. On the whole, the biofilter coupled with Fe–C micro-electrolysis provides a novel strategy to treat polluted water of low C/N under both heterotrophic and autotrophic conditions. A hybrid biofilter was established on Fe–C supported carriers aimed to enhance nitrogen removal from polluted water of low Carbon/Nitrogen (C/N) ratio. Effects of organic loadings, hydraulic retention time (HRT), additional electron donor (Fe2+) supplementation and operation mode on the performance of the biofilter were investigated. Results showed that up-flow operation mode was better than down-flow mode in terms of nitrate and total nitrogen (TN) removal at low COD/N. The average removal of NO3 −-N, NH4 + –N and TN attained 83.1%, 84.7% and 81.2%, respectively, under the conditions of influent COD/NO3 −-N = 1.5–3.6, HRT = 10 h and up-flow operation. When the biofilter was operated under autotrophic conditions without organic compounds in influent as electron donors, the biofilter achieved a NO3 −-N removal of 46% and TN removal of 56% depending on the innate electron donors provided by the Fe–C carriers. Supplementation of Fe2+ in influent further promoted autotrophic denitrifying process, and the removal of NO3 −-N and TN increased to 96.3% and 84.7%, respectively, at the mol ratio of Fe2+/NO3 − = 10 and HRT = 10 h. The microbial community was analyzed for the biofilm samples enriched under heterotrophic and autotrophic conditions. The Fe–C biofilter boosted the growth of a large population of mixotrophic denitrifying bacteria including Gallionella, heterotrophic denitrifying bacteria Denitratisoma, and autotrophic denitrifying bacteria Thiobacillus and Thioalkalispira. On the whole, the biofilter coupled with Fe–C micro-electrolysis provides a novel strategy to treat polluted water of low C/N under both heterotrophic and autotrophic conditions. Denitrification Elsevier Biofilter Elsevier Nitrogen Elsevier Micro-electrolysis Elsevier Zhang, Haifeng oth Liu, Hezun oth Chen, Liang oth Li, Naiyu oth Enthalten in Elsevier Science Shterenlikht, Anton ELSEVIER MPI vs Fortran coarrays beyond 100k cores: 3D cellular automata 2019 chemistry, biology and toxicology as related to environmental problems Amsterdam [u.a.] (DE-627)ELV002112701 volume:257 year:2020 pages:0 https://doi.org/10.1016/j.chemosphere.2020.127272 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 54.25 Parallele Datenverarbeitung VZ AR 257 2020 0 |
| spelling |
10.1016/j.chemosphere.2020.127272 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001076.pica (DE-627)ELV050881132 (ELSEVIER)S0045-6535(20)31465-X DE-627 ger DE-627 rakwb eng 004 620 VZ 54.25 bkl Quan, Xiangchun verfasserin aut Remediation of nitrogen polluted water using Fe–C microelectrolysis and biofiltration under mixotrophic conditions 2020transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier A hybrid biofilter was established on Fe–C supported carriers aimed to enhance nitrogen removal from polluted water of low Carbon/Nitrogen (C/N) ratio. Effects of organic loadings, hydraulic retention time (HRT), additional electron donor (Fe2+) supplementation and operation mode on the performance of the biofilter were investigated. Results showed that up-flow operation mode was better than down-flow mode in terms of nitrate and total nitrogen (TN) removal at low COD/N. The average removal of NO3 −-N, NH4 + –N and TN attained 83.1%, 84.7% and 81.2%, respectively, under the conditions of influent COD/NO3 −-N = 1.5–3.6, HRT = 10 h and up-flow operation. When the biofilter was operated under autotrophic conditions without organic compounds in influent as electron donors, the biofilter achieved a NO3 −-N removal of 46% and TN removal of 56% depending on the innate electron donors provided by the Fe–C carriers. Supplementation of Fe2+ in influent further promoted autotrophic denitrifying process, and the removal of NO3 −-N and TN increased to 96.3% and 84.7%, respectively, at the mol ratio of Fe2+/NO3 − = 10 and HRT = 10 h. The microbial community was analyzed for the biofilm samples enriched under heterotrophic and autotrophic conditions. The Fe–C biofilter boosted the growth of a large population of mixotrophic denitrifying bacteria including Gallionella, heterotrophic denitrifying bacteria Denitratisoma, and autotrophic denitrifying bacteria Thiobacillus and Thioalkalispira. On the whole, the biofilter coupled with Fe–C micro-electrolysis provides a novel strategy to treat polluted water of low C/N under both heterotrophic and autotrophic conditions. A hybrid biofilter was established on Fe–C supported carriers aimed to enhance nitrogen removal from polluted water of low Carbon/Nitrogen (C/N) ratio. Effects of organic loadings, hydraulic retention time (HRT), additional electron donor (Fe2+) supplementation and operation mode on the performance of the biofilter were investigated. Results showed that up-flow operation mode was better than down-flow mode in terms of nitrate and total nitrogen (TN) removal at low COD/N. The average removal of NO3 −-N, NH4 + –N and TN attained 83.1%, 84.7% and 81.2%, respectively, under the conditions of influent COD/NO3 −-N = 1.5–3.6, HRT = 10 h and up-flow operation. When the biofilter was operated under autotrophic conditions without organic compounds in influent as electron donors, the biofilter achieved a NO3 −-N removal of 46% and TN removal of 56% depending on the innate electron donors provided by the Fe–C carriers. Supplementation of Fe2+ in influent further promoted autotrophic denitrifying process, and the removal of NO3 −-N and TN increased to 96.3% and 84.7%, respectively, at the mol ratio of Fe2+/NO3 − = 10 and HRT = 10 h. The microbial community was analyzed for the biofilm samples enriched under heterotrophic and autotrophic conditions. The Fe–C biofilter boosted the growth of a large population of mixotrophic denitrifying bacteria including Gallionella, heterotrophic denitrifying bacteria Denitratisoma, and autotrophic denitrifying bacteria Thiobacillus and Thioalkalispira. On the whole, the biofilter coupled with Fe–C micro-electrolysis provides a novel strategy to treat polluted water of low C/N under both heterotrophic and autotrophic conditions. Denitrification Elsevier Biofilter Elsevier Nitrogen Elsevier Micro-electrolysis Elsevier Zhang, Haifeng oth Liu, Hezun oth Chen, Liang oth Li, Naiyu oth Enthalten in Elsevier Science Shterenlikht, Anton ELSEVIER MPI vs Fortran coarrays beyond 100k cores: 3D cellular automata 2019 chemistry, biology and toxicology as related to environmental problems Amsterdam [u.a.] (DE-627)ELV002112701 volume:257 year:2020 pages:0 https://doi.org/10.1016/j.chemosphere.2020.127272 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 54.25 Parallele Datenverarbeitung VZ AR 257 2020 0 |
| allfields_unstemmed |
10.1016/j.chemosphere.2020.127272 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001076.pica (DE-627)ELV050881132 (ELSEVIER)S0045-6535(20)31465-X DE-627 ger DE-627 rakwb eng 004 620 VZ 54.25 bkl Quan, Xiangchun verfasserin aut Remediation of nitrogen polluted water using Fe–C microelectrolysis and biofiltration under mixotrophic conditions 2020transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier A hybrid biofilter was established on Fe–C supported carriers aimed to enhance nitrogen removal from polluted water of low Carbon/Nitrogen (C/N) ratio. Effects of organic loadings, hydraulic retention time (HRT), additional electron donor (Fe2+) supplementation and operation mode on the performance of the biofilter were investigated. Results showed that up-flow operation mode was better than down-flow mode in terms of nitrate and total nitrogen (TN) removal at low COD/N. The average removal of NO3 −-N, NH4 + –N and TN attained 83.1%, 84.7% and 81.2%, respectively, under the conditions of influent COD/NO3 −-N = 1.5–3.6, HRT = 10 h and up-flow operation. When the biofilter was operated under autotrophic conditions without organic compounds in influent as electron donors, the biofilter achieved a NO3 −-N removal of 46% and TN removal of 56% depending on the innate electron donors provided by the Fe–C carriers. Supplementation of Fe2+ in influent further promoted autotrophic denitrifying process, and the removal of NO3 −-N and TN increased to 96.3% and 84.7%, respectively, at the mol ratio of Fe2+/NO3 − = 10 and HRT = 10 h. The microbial community was analyzed for the biofilm samples enriched under heterotrophic and autotrophic conditions. The Fe–C biofilter boosted the growth of a large population of mixotrophic denitrifying bacteria including Gallionella, heterotrophic denitrifying bacteria Denitratisoma, and autotrophic denitrifying bacteria Thiobacillus and Thioalkalispira. On the whole, the biofilter coupled with Fe–C micro-electrolysis provides a novel strategy to treat polluted water of low C/N under both heterotrophic and autotrophic conditions. A hybrid biofilter was established on Fe–C supported carriers aimed to enhance nitrogen removal from polluted water of low Carbon/Nitrogen (C/N) ratio. Effects of organic loadings, hydraulic retention time (HRT), additional electron donor (Fe2+) supplementation and operation mode on the performance of the biofilter were investigated. Results showed that up-flow operation mode was better than down-flow mode in terms of nitrate and total nitrogen (TN) removal at low COD/N. The average removal of NO3 −-N, NH4 + –N and TN attained 83.1%, 84.7% and 81.2%, respectively, under the conditions of influent COD/NO3 −-N = 1.5–3.6, HRT = 10 h and up-flow operation. When the biofilter was operated under autotrophic conditions without organic compounds in influent as electron donors, the biofilter achieved a NO3 −-N removal of 46% and TN removal of 56% depending on the innate electron donors provided by the Fe–C carriers. Supplementation of Fe2+ in influent further promoted autotrophic denitrifying process, and the removal of NO3 −-N and TN increased to 96.3% and 84.7%, respectively, at the mol ratio of Fe2+/NO3 − = 10 and HRT = 10 h. The microbial community was analyzed for the biofilm samples enriched under heterotrophic and autotrophic conditions. The Fe–C biofilter boosted the growth of a large population of mixotrophic denitrifying bacteria including Gallionella, heterotrophic denitrifying bacteria Denitratisoma, and autotrophic denitrifying bacteria Thiobacillus and Thioalkalispira. On the whole, the biofilter coupled with Fe–C micro-electrolysis provides a novel strategy to treat polluted water of low C/N under both heterotrophic and autotrophic conditions. Denitrification Elsevier Biofilter Elsevier Nitrogen Elsevier Micro-electrolysis Elsevier Zhang, Haifeng oth Liu, Hezun oth Chen, Liang oth Li, Naiyu oth Enthalten in Elsevier Science Shterenlikht, Anton ELSEVIER MPI vs Fortran coarrays beyond 100k cores: 3D cellular automata 2019 chemistry, biology and toxicology as related to environmental problems Amsterdam [u.a.] (DE-627)ELV002112701 volume:257 year:2020 pages:0 https://doi.org/10.1016/j.chemosphere.2020.127272 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 54.25 Parallele Datenverarbeitung VZ AR 257 2020 0 |
| allfieldsGer |
10.1016/j.chemosphere.2020.127272 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001076.pica (DE-627)ELV050881132 (ELSEVIER)S0045-6535(20)31465-X DE-627 ger DE-627 rakwb eng 004 620 VZ 54.25 bkl Quan, Xiangchun verfasserin aut Remediation of nitrogen polluted water using Fe–C microelectrolysis and biofiltration under mixotrophic conditions 2020transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier A hybrid biofilter was established on Fe–C supported carriers aimed to enhance nitrogen removal from polluted water of low Carbon/Nitrogen (C/N) ratio. Effects of organic loadings, hydraulic retention time (HRT), additional electron donor (Fe2+) supplementation and operation mode on the performance of the biofilter were investigated. Results showed that up-flow operation mode was better than down-flow mode in terms of nitrate and total nitrogen (TN) removal at low COD/N. The average removal of NO3 −-N, NH4 + –N and TN attained 83.1%, 84.7% and 81.2%, respectively, under the conditions of influent COD/NO3 −-N = 1.5–3.6, HRT = 10 h and up-flow operation. When the biofilter was operated under autotrophic conditions without organic compounds in influent as electron donors, the biofilter achieved a NO3 −-N removal of 46% and TN removal of 56% depending on the innate electron donors provided by the Fe–C carriers. Supplementation of Fe2+ in influent further promoted autotrophic denitrifying process, and the removal of NO3 −-N and TN increased to 96.3% and 84.7%, respectively, at the mol ratio of Fe2+/NO3 − = 10 and HRT = 10 h. The microbial community was analyzed for the biofilm samples enriched under heterotrophic and autotrophic conditions. The Fe–C biofilter boosted the growth of a large population of mixotrophic denitrifying bacteria including Gallionella, heterotrophic denitrifying bacteria Denitratisoma, and autotrophic denitrifying bacteria Thiobacillus and Thioalkalispira. On the whole, the biofilter coupled with Fe–C micro-electrolysis provides a novel strategy to treat polluted water of low C/N under both heterotrophic and autotrophic conditions. A hybrid biofilter was established on Fe–C supported carriers aimed to enhance nitrogen removal from polluted water of low Carbon/Nitrogen (C/N) ratio. Effects of organic loadings, hydraulic retention time (HRT), additional electron donor (Fe2+) supplementation and operation mode on the performance of the biofilter were investigated. Results showed that up-flow operation mode was better than down-flow mode in terms of nitrate and total nitrogen (TN) removal at low COD/N. The average removal of NO3 −-N, NH4 + –N and TN attained 83.1%, 84.7% and 81.2%, respectively, under the conditions of influent COD/NO3 −-N = 1.5–3.6, HRT = 10 h and up-flow operation. When the biofilter was operated under autotrophic conditions without organic compounds in influent as electron donors, the biofilter achieved a NO3 −-N removal of 46% and TN removal of 56% depending on the innate electron donors provided by the Fe–C carriers. Supplementation of Fe2+ in influent further promoted autotrophic denitrifying process, and the removal of NO3 −-N and TN increased to 96.3% and 84.7%, respectively, at the mol ratio of Fe2+/NO3 − = 10 and HRT = 10 h. The microbial community was analyzed for the biofilm samples enriched under heterotrophic and autotrophic conditions. The Fe–C biofilter boosted the growth of a large population of mixotrophic denitrifying bacteria including Gallionella, heterotrophic denitrifying bacteria Denitratisoma, and autotrophic denitrifying bacteria Thiobacillus and Thioalkalispira. On the whole, the biofilter coupled with Fe–C micro-electrolysis provides a novel strategy to treat polluted water of low C/N under both heterotrophic and autotrophic conditions. Denitrification Elsevier Biofilter Elsevier Nitrogen Elsevier Micro-electrolysis Elsevier Zhang, Haifeng oth Liu, Hezun oth Chen, Liang oth Li, Naiyu oth Enthalten in Elsevier Science Shterenlikht, Anton ELSEVIER MPI vs Fortran coarrays beyond 100k cores: 3D cellular automata 2019 chemistry, biology and toxicology as related to environmental problems Amsterdam [u.a.] (DE-627)ELV002112701 volume:257 year:2020 pages:0 https://doi.org/10.1016/j.chemosphere.2020.127272 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 54.25 Parallele Datenverarbeitung VZ AR 257 2020 0 |
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10.1016/j.chemosphere.2020.127272 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001076.pica (DE-627)ELV050881132 (ELSEVIER)S0045-6535(20)31465-X DE-627 ger DE-627 rakwb eng 004 620 VZ 54.25 bkl Quan, Xiangchun verfasserin aut Remediation of nitrogen polluted water using Fe–C microelectrolysis and biofiltration under mixotrophic conditions 2020transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier A hybrid biofilter was established on Fe–C supported carriers aimed to enhance nitrogen removal from polluted water of low Carbon/Nitrogen (C/N) ratio. Effects of organic loadings, hydraulic retention time (HRT), additional electron donor (Fe2+) supplementation and operation mode on the performance of the biofilter were investigated. Results showed that up-flow operation mode was better than down-flow mode in terms of nitrate and total nitrogen (TN) removal at low COD/N. The average removal of NO3 −-N, NH4 + –N and TN attained 83.1%, 84.7% and 81.2%, respectively, under the conditions of influent COD/NO3 −-N = 1.5–3.6, HRT = 10 h and up-flow operation. When the biofilter was operated under autotrophic conditions without organic compounds in influent as electron donors, the biofilter achieved a NO3 −-N removal of 46% and TN removal of 56% depending on the innate electron donors provided by the Fe–C carriers. Supplementation of Fe2+ in influent further promoted autotrophic denitrifying process, and the removal of NO3 −-N and TN increased to 96.3% and 84.7%, respectively, at the mol ratio of Fe2+/NO3 − = 10 and HRT = 10 h. The microbial community was analyzed for the biofilm samples enriched under heterotrophic and autotrophic conditions. The Fe–C biofilter boosted the growth of a large population of mixotrophic denitrifying bacteria including Gallionella, heterotrophic denitrifying bacteria Denitratisoma, and autotrophic denitrifying bacteria Thiobacillus and Thioalkalispira. On the whole, the biofilter coupled with Fe–C micro-electrolysis provides a novel strategy to treat polluted water of low C/N under both heterotrophic and autotrophic conditions. A hybrid biofilter was established on Fe–C supported carriers aimed to enhance nitrogen removal from polluted water of low Carbon/Nitrogen (C/N) ratio. Effects of organic loadings, hydraulic retention time (HRT), additional electron donor (Fe2+) supplementation and operation mode on the performance of the biofilter were investigated. Results showed that up-flow operation mode was better than down-flow mode in terms of nitrate and total nitrogen (TN) removal at low COD/N. The average removal of NO3 −-N, NH4 + –N and TN attained 83.1%, 84.7% and 81.2%, respectively, under the conditions of influent COD/NO3 −-N = 1.5–3.6, HRT = 10 h and up-flow operation. When the biofilter was operated under autotrophic conditions without organic compounds in influent as electron donors, the biofilter achieved a NO3 −-N removal of 46% and TN removal of 56% depending on the innate electron donors provided by the Fe–C carriers. Supplementation of Fe2+ in influent further promoted autotrophic denitrifying process, and the removal of NO3 −-N and TN increased to 96.3% and 84.7%, respectively, at the mol ratio of Fe2+/NO3 − = 10 and HRT = 10 h. The microbial community was analyzed for the biofilm samples enriched under heterotrophic and autotrophic conditions. The Fe–C biofilter boosted the growth of a large population of mixotrophic denitrifying bacteria including Gallionella, heterotrophic denitrifying bacteria Denitratisoma, and autotrophic denitrifying bacteria Thiobacillus and Thioalkalispira. On the whole, the biofilter coupled with Fe–C micro-electrolysis provides a novel strategy to treat polluted water of low C/N under both heterotrophic and autotrophic conditions. Denitrification Elsevier Biofilter Elsevier Nitrogen Elsevier Micro-electrolysis Elsevier Zhang, Haifeng oth Liu, Hezun oth Chen, Liang oth Li, Naiyu oth Enthalten in Elsevier Science Shterenlikht, Anton ELSEVIER MPI vs Fortran coarrays beyond 100k cores: 3D cellular automata 2019 chemistry, biology and toxicology as related to environmental problems Amsterdam [u.a.] (DE-627)ELV002112701 volume:257 year:2020 pages:0 https://doi.org/10.1016/j.chemosphere.2020.127272 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 54.25 Parallele Datenverarbeitung VZ AR 257 2020 0 |
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remediation of nitrogen polluted water using fe–c microelectrolysis and biofiltration under mixotrophic conditions |
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Remediation of nitrogen polluted water using Fe–C microelectrolysis and biofiltration under mixotrophic conditions |
| abstract |
A hybrid biofilter was established on Fe–C supported carriers aimed to enhance nitrogen removal from polluted water of low Carbon/Nitrogen (C/N) ratio. Effects of organic loadings, hydraulic retention time (HRT), additional electron donor (Fe2+) supplementation and operation mode on the performance of the biofilter were investigated. Results showed that up-flow operation mode was better than down-flow mode in terms of nitrate and total nitrogen (TN) removal at low COD/N. The average removal of NO3 −-N, NH4 + –N and TN attained 83.1%, 84.7% and 81.2%, respectively, under the conditions of influent COD/NO3 −-N = 1.5–3.6, HRT = 10 h and up-flow operation. When the biofilter was operated under autotrophic conditions without organic compounds in influent as electron donors, the biofilter achieved a NO3 −-N removal of 46% and TN removal of 56% depending on the innate electron donors provided by the Fe–C carriers. Supplementation of Fe2+ in influent further promoted autotrophic denitrifying process, and the removal of NO3 −-N and TN increased to 96.3% and 84.7%, respectively, at the mol ratio of Fe2+/NO3 − = 10 and HRT = 10 h. The microbial community was analyzed for the biofilm samples enriched under heterotrophic and autotrophic conditions. The Fe–C biofilter boosted the growth of a large population of mixotrophic denitrifying bacteria including Gallionella, heterotrophic denitrifying bacteria Denitratisoma, and autotrophic denitrifying bacteria Thiobacillus and Thioalkalispira. On the whole, the biofilter coupled with Fe–C micro-electrolysis provides a novel strategy to treat polluted water of low C/N under both heterotrophic and autotrophic conditions. |
| abstractGer |
A hybrid biofilter was established on Fe–C supported carriers aimed to enhance nitrogen removal from polluted water of low Carbon/Nitrogen (C/N) ratio. Effects of organic loadings, hydraulic retention time (HRT), additional electron donor (Fe2+) supplementation and operation mode on the performance of the biofilter were investigated. Results showed that up-flow operation mode was better than down-flow mode in terms of nitrate and total nitrogen (TN) removal at low COD/N. The average removal of NO3 −-N, NH4 + –N and TN attained 83.1%, 84.7% and 81.2%, respectively, under the conditions of influent COD/NO3 −-N = 1.5–3.6, HRT = 10 h and up-flow operation. When the biofilter was operated under autotrophic conditions without organic compounds in influent as electron donors, the biofilter achieved a NO3 −-N removal of 46% and TN removal of 56% depending on the innate electron donors provided by the Fe–C carriers. Supplementation of Fe2+ in influent further promoted autotrophic denitrifying process, and the removal of NO3 −-N and TN increased to 96.3% and 84.7%, respectively, at the mol ratio of Fe2+/NO3 − = 10 and HRT = 10 h. The microbial community was analyzed for the biofilm samples enriched under heterotrophic and autotrophic conditions. The Fe–C biofilter boosted the growth of a large population of mixotrophic denitrifying bacteria including Gallionella, heterotrophic denitrifying bacteria Denitratisoma, and autotrophic denitrifying bacteria Thiobacillus and Thioalkalispira. On the whole, the biofilter coupled with Fe–C micro-electrolysis provides a novel strategy to treat polluted water of low C/N under both heterotrophic and autotrophic conditions. |
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A hybrid biofilter was established on Fe–C supported carriers aimed to enhance nitrogen removal from polluted water of low Carbon/Nitrogen (C/N) ratio. Effects of organic loadings, hydraulic retention time (HRT), additional electron donor (Fe2+) supplementation and operation mode on the performance of the biofilter were investigated. Results showed that up-flow operation mode was better than down-flow mode in terms of nitrate and total nitrogen (TN) removal at low COD/N. The average removal of NO3 −-N, NH4 + –N and TN attained 83.1%, 84.7% and 81.2%, respectively, under the conditions of influent COD/NO3 −-N = 1.5–3.6, HRT = 10 h and up-flow operation. When the biofilter was operated under autotrophic conditions without organic compounds in influent as electron donors, the biofilter achieved a NO3 −-N removal of 46% and TN removal of 56% depending on the innate electron donors provided by the Fe–C carriers. Supplementation of Fe2+ in influent further promoted autotrophic denitrifying process, and the removal of NO3 −-N and TN increased to 96.3% and 84.7%, respectively, at the mol ratio of Fe2+/NO3 − = 10 and HRT = 10 h. The microbial community was analyzed for the biofilm samples enriched under heterotrophic and autotrophic conditions. The Fe–C biofilter boosted the growth of a large population of mixotrophic denitrifying bacteria including Gallionella, heterotrophic denitrifying bacteria Denitratisoma, and autotrophic denitrifying bacteria Thiobacillus and Thioalkalispira. On the whole, the biofilter coupled with Fe–C micro-electrolysis provides a novel strategy to treat polluted water of low C/N under both heterotrophic and autotrophic conditions. |
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