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Autotrophic Denitrification Processes

Autotrophic Denitrification Processes
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Author(s): Marisol Belmonte (Pontificia Universidad Católica de Valparaíso-Universidad de Playa Ancha, Chile), Carmen Fajardo (Universidad Autónoma Metropolitana-Iztapalapa, Mexico), Javiera Belén Toledo-Alarcón (Institut National de la Recherche Agronomique, France), Daniel Valenzuela Heredia (University Adolfo Ibáñez, Chile), Lorena Jorquera (Pontificia Universidad Católica de Valparaíso, Chile), Ramón Méndez (University of Santiago de Compostela, Spain), Estela Tapia-Venegas (Pontificia Universidad Católica de Valparaíso, Chile) and Gonzalo Ruiz-Filippi (Pontificia Universidad Católica de Valparaíso, Chile)
Copyright: 2017
Pages: 27
Source title: Technologies for the Treatment and Recovery of Nutrients from Industrial Wastewater
Source Author(s)/Editor(s): Ángeles Val del Río (University of Santiago de Compostela, Spain), José Luis Campos Gómez (University Adolfo Ibáñez, Chile) and Anuska Mosquera Corral (University of Santiago de Compostela, Spain)
DOI: 10.4018/978-1-5225-1037-6.ch006


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Effluents coming from anaerobic digesters are characterized by a COD/N ratio between 2 and 10, high ammonia NH4+ concentrations about 500 mg/L and a temperature range of 25-35 ºC. To remove nitrogen from these effluents biological processes as the autotrophic denitrification with sulfur compounds, hydrogen or methane can be applied. The main goal of this chapter is to describe and evaluate the use of these processes from an economic point of view. The methanotrophic denitrification is the cheapest alternative to remove nitrate from effluents with low COD/N ratios.

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