Wheat straw as substrate for water denitrification

M. Inês M. Soares; Aharon Abeliovich

doi:10.1016/S0043-1354(98)00136-5

Wheat straw as substrate for water denitrification

M. Inês M. Soares, Aharon Abeliovich

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

157 Scopus citations

Abstract

Biological denitrification of drinking water was studied in up-flow laboratory reactors packed with wheat straw which served as the sole carbon source as well as the only physical support for the microorganisms. The highest rates of denitrification (0.053 g N removed l^-1 d^-1) were observed in fresh reactors during their first week of operation and the efficiency of the process declined thereafter. The addition of fresh wheat straw brought about a temporary improvement of the denitrification performance and a regime of one weekly addition prevented the deterioration of a reactor which was operated for 5 months. The rate of denitrification was affected by the water velocity and decreased at velocities above 0.054 m d^-1. Colour and soluble organic carbon associated with fresh straw were removed by adsorption on powdered activated carbon.

Original language	English
Pages (from-to)	3790-3794
Number of pages	5
Journal	Water Research
Volume	32
Issue number	12
DOIs	https://doi.org/10.1016/S0043-1354(98)00136-5
State	Published - 1 Jan 1998

Keywords

Biological water treatment
Cellulose degradation
Denitrification
Nitrate contamination
Wheat straw

ASJC Scopus subject areas

Ecological Modeling
Water Science and Technology
Waste Management and Disposal
Pollution

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title = "Wheat straw as substrate for water denitrification",

abstract = "Biological denitrification of drinking water was studied in up-flow laboratory reactors packed with wheat straw which served as the sole carbon source as well as the only physical support for the microorganisms. The highest rates of denitrification (0.053 g N removed l-1 d-1) were observed in fresh reactors during their first week of operation and the efficiency of the process declined thereafter. The addition of fresh wheat straw brought about a temporary improvement of the denitrification performance and a regime of one weekly addition prevented the deterioration of a reactor which was operated for 5 months. The rate of denitrification was affected by the water velocity and decreased at velocities above 0.054 m d-1. Colour and soluble organic carbon associated with fresh straw were removed by adsorption on powdered activated carbon.",

keywords = "Biological water treatment, Cellulose degradation, Denitrification, Nitrate contamination, Wheat straw",

author = "Soares, {M. In{\^e}s M.} and Aharon Abeliovich",

note = "Funding Information: This research was supported by Grant No. TA-MOU-C13-157, U.S.-Israel Cooperative Research Program, Office of the Science Advisor, U.S. Agency for International Development, Grant No. WT 9227/1148 from the National Council for Research and Development, Israel and the Bundesministerium f{\"u}r Forschung und Technologie (BMFT), Federal Republic of Germany and Grant No. US-2122-92, U.S.-Israel Binational Agricultural Research and Development Fund.",

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doi = "10.1016/S0043-1354(98)00136-5",

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T1 - Wheat straw as substrate for water denitrification

AU - Soares, M. Inês M.

AU - Abeliovich, Aharon

N1 - Funding Information: This research was supported by Grant No. TA-MOU-C13-157, U.S.-Israel Cooperative Research Program, Office of the Science Advisor, U.S. Agency for International Development, Grant No. WT 9227/1148 from the National Council for Research and Development, Israel and the Bundesministerium für Forschung und Technologie (BMFT), Federal Republic of Germany and Grant No. US-2122-92, U.S.-Israel Binational Agricultural Research and Development Fund.

PY - 1998/1/1

Y1 - 1998/1/1

N2 - Biological denitrification of drinking water was studied in up-flow laboratory reactors packed with wheat straw which served as the sole carbon source as well as the only physical support for the microorganisms. The highest rates of denitrification (0.053 g N removed l-1 d-1) were observed in fresh reactors during their first week of operation and the efficiency of the process declined thereafter. The addition of fresh wheat straw brought about a temporary improvement of the denitrification performance and a regime of one weekly addition prevented the deterioration of a reactor which was operated for 5 months. The rate of denitrification was affected by the water velocity and decreased at velocities above 0.054 m d-1. Colour and soluble organic carbon associated with fresh straw were removed by adsorption on powdered activated carbon.

AB - Biological denitrification of drinking water was studied in up-flow laboratory reactors packed with wheat straw which served as the sole carbon source as well as the only physical support for the microorganisms. The highest rates of denitrification (0.053 g N removed l-1 d-1) were observed in fresh reactors during their first week of operation and the efficiency of the process declined thereafter. The addition of fresh wheat straw brought about a temporary improvement of the denitrification performance and a regime of one weekly addition prevented the deterioration of a reactor which was operated for 5 months. The rate of denitrification was affected by the water velocity and decreased at velocities above 0.054 m d-1. Colour and soluble organic carbon associated with fresh straw were removed by adsorption on powdered activated carbon.

KW - Biological water treatment

KW - Cellulose degradation

KW - Denitrification

KW - Nitrate contamination

KW - Wheat straw

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U2 - 10.1016/S0043-1354(98)00136-5

DO - 10.1016/S0043-1354(98)00136-5

M3 - Article

AN - SCOPUS:0031735534

SN - 0043-1354

VL - 32

SP - 3790

EP - 3794

JO - Water Research

JF - Water Research

IS - 12

ER -

Wheat straw as substrate for water denitrification

Abstract

Keywords

ASJC Scopus subject areas

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