Nitrate and bromate removal by autotrophic and heterotrophic denitrification processes: batch experiments

The effects of various parameters on bromate reduction were tested using lab-scale batch reactors with sulfur based autotrophic and methanol based heterotrophic denitrification processes. The initial bromate (BrO 3 – ) concentration of 100 and 500 μg/L was completely reduced and bromide (Br - ) was...

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Veröffentlicht in:Journal of environmental health science and engineering 2013-12, Vol.11 (1), p.27-27, Article 27
Hauptverfasser: Demirel, Sevgi, Bayhan, Ibrahim
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description The effects of various parameters on bromate reduction were tested using lab-scale batch reactors with sulfur based autotrophic and methanol based heterotrophic denitrification processes. The initial bromate (BrO 3 – ) concentration of 100 and 500 μg/L was completely reduced and bromide (Br - ) was produced stoichiometrically from bromate in all batch reactors. In all experiments, nitrate was completely reduced to below detection limit. Kinetic studies showed that the sulfur-based autotrophic nitrate reduction rate increased with increasing initial nitrate concentration. At stoichiometrically sufficient methanol concentration as an external carbon source, nitrate and bromate were reduced to below US EPA drinking water limits in heterotrophic denitrification conditions. The methanol was completely depleted at the end of the heterotrophic operation conditions.
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source Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; SpringerNature Journals; PubMed Central
subjects Bromates
Carbon
Chemical properties
Denitrification
Drinking water
Earth and Environmental Science
Environment
Environmental Economics
Environmental Engineering/Biotechnology
Environmental Health
Environmental Law/Policy/Ecojustice
Experiments
Measurement
Methanol
Methods
Nitrates
Purification
Quality of Life Research
Reactors
Research Article
Waste Management/Waste Technology
Water
title Nitrate and bromate removal by autotrophic and heterotrophic denitrification processes: batch experiments
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