Hydrogen-dependent denitrification in a two-reactor bio-electrochemical system

S. Szekeres; I. Kiss; T. T. Bejerano; M. I.M. Soares

doi:10.1016/S0043-1354(00)00300-6

Hydrogen-dependent denitrification in a two-reactor bio-electrochemical system

S. Szekeres, I. Kiss, T. T. Bejerano, M. I.M. Soares

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

68 Scopus citations

Abstract

An autotrophic biological process was developed for the treatment of nitrate-contaminated drinking water. The system comprised of two steps: the water to be treated was first enriched with hydrogen (energy source) in the cathodic chamber of an electrochemical cell, and then denitrified in the bioreactor. The bioreactor was a packed bed of granulated activated carbon, and the water flow was directed in an upward continuous mode. The system was operated for one year, at various water velocities and current intensities. Denitrification rates up to 0.25kgNm^-3d^-1 were obtained at the hydraulic residence time of 1h. The system was stable. When detected in the effluent, the concentration of nitrite was low, even under conditions that resulted in the elution of very high concentrations of nitrate. Copyright (C) 2001 Elsevier Science Ltd.

Original language	English
Pages (from-to)	715-719
Number of pages	5
Journal	Water Research
Volume	35
Issue number	3
DOIs	https://doi.org/10.1016/S0043-1354(00)00300-6
State	Published - 1 Jan 2001

Keywords

Biological denitrification
Drinking water
Hydrogen
Water electrolysis
Water treatment

ASJC Scopus subject areas

Ecological Modeling
Water Science and Technology
Waste Management and Disposal
Pollution

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10.1016/S0043-1354(00)00300-6

Cite this

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abstract = "An autotrophic biological process was developed for the treatment of nitrate-contaminated drinking water. The system comprised of two steps: the water to be treated was first enriched with hydrogen (energy source) in the cathodic chamber of an electrochemical cell, and then denitrified in the bioreactor. The bioreactor was a packed bed of granulated activated carbon, and the water flow was directed in an upward continuous mode. The system was operated for one year, at various water velocities and current intensities. Denitrification rates up to 0.25kgNm-3d-1 were obtained at the hydraulic residence time of 1h. The system was stable. When detected in the effluent, the concentration of nitrite was low, even under conditions that resulted in the elution of very high concentrations of nitrate. Copyright (C) 2001 Elsevier Science Ltd.",

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AU - Kiss, I.

AU - Bejerano, T. T.

AU - Soares, M. I.M.

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N2 - An autotrophic biological process was developed for the treatment of nitrate-contaminated drinking water. The system comprised of two steps: the water to be treated was first enriched with hydrogen (energy source) in the cathodic chamber of an electrochemical cell, and then denitrified in the bioreactor. The bioreactor was a packed bed of granulated activated carbon, and the water flow was directed in an upward continuous mode. The system was operated for one year, at various water velocities and current intensities. Denitrification rates up to 0.25kgNm-3d-1 were obtained at the hydraulic residence time of 1h. The system was stable. When detected in the effluent, the concentration of nitrite was low, even under conditions that resulted in the elution of very high concentrations of nitrate. Copyright (C) 2001 Elsevier Science Ltd.

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KW - Biological denitrification

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KW - Water electrolysis

KW - Water treatment

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Hydrogen-dependent denitrification in a two-reactor bio-electrochemical system

Abstract

Keywords

ASJC Scopus subject areas

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