Articles producció científica> Enginyeria Química

Nitrate removal in an innovative up-flow stirred packed-bed bioreactor

  • Datos identificativos

    Identificador: PC:2935
    Handle: http://hdl.handle.net/20.500.11797/PC2935
  • Autores:

    GARCÍA MARTÍNEZ, YONHARA
    CHIRINOS, JUDITH
    BENGOA, CHRISTOPHE
    STÜBER, FRANK
    FONT, JOSEP
    FORTUNY, AGUSTÍ
    FABREGAT, AZAEL
  • Otros:

    Autor según el artículo: GARCÍA MARTÍNEZ, YONHARA; CHIRINOS, JUDITH; BENGOA, CHRISTOPHE; STÜBER, FRANK; FONT, JOSEP; FORTUNY, AGUSTÍ; FABREGAT, AZAEL
    Departamento: Enginyeria Química
    Autor/es de la URV: GARCÍA MARTÍNEZ, YONHARA; CHIRINOS CARDENAS, JUDITH ROSANA; BENGOA , CHRISTOPHE JOSÉ; STÜBER , FRANK ERICH; FONT CAPAFONS, JOSÉ; FORTUNY, AGUSTÍ; FABREGAT LLANGOSTERA, AZAEL
    Palabras clave: Tractament anaeròbic Carbó biològicament activat Eliminació de nitrats Tratamiento anaerobio carbón biológicamente activado Eliminación de nitratos Anaerobic treatment Biological Activated Carbon Nitrate removal
    Resumen: The anaerobic removal of nitrates was studied in a continuous up-flow stirred packed-bed reactor (USPBR) containing biological sludge carbonaceous material (BSCM). The carbonaceous material (CM), obtained from exhausted sludge, was used as support to grow the biofilm and solid electron mediator for nitrate reduction in the bioreactor. In a continuous USPBR-BSCM system feed with treated synthetic wastewaters, nitrate removal efficiency was 99% at very short space times (τ) 2 min/hydraulic residence times (HRT) 6 min. By comparing these results with the hydraulic residence times applied in other classical denitrification technologies, it seems that USPBR-BSCM requires the shortest times to achieve almost complete nitrate removal. In addition, a high denitrification rate of 3.67 · 10−3 mmol (NO3−)/min/g was observed in the SPBR-BSCM, whilst in the USPBR-biological activated carbon (BAC) it was 2.04 · 10−3 mmol (NO3−)/min/g. The kinetic analysis of the systems showed a good fit with the Michaelis–Menten model and the kinetic parameters estimated were k1 = 3.37 mmol/L/min, k2 = 0.58 mmol/L for USPBR-BSCM and k1 = 2.50 mmol/L/min, k2 = 0.27 mmol/L for USPBR-BAC. Results indicate that SCM is a potentially low cost catalyst and effectively competes with commercial ones; USPBR-BSCM is an inexpensive and advantageous process for nitrate removal and also an effective system for denitrification.
    Grupo de investigación: Process Intensification, Simulation and Environmental Technology (PISET)
    Áreas temáticas: Enginyeria química Ingeniería química Chemical engineering
    Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/
    ISSN: 0255-2701
    Identificador del autor: ; ; 0000-0001-9160-5010; 0000-0001-9424-1400; 0000-0002-4007-7905; 0000-0002-2350-8654; 0000-0002-5525-5401
    Fecha de alta del registro: 2017-11-06
    Página final: 64
    Volumen de revista: 121
    Versión del articulo depositado: info:eu-repo/semantics/acceptedVersion
    Enlace a la fuente original: http://www.sciencedirect.com/science/article/pii/S0255270116306274
    Programa de financiación: plan; CTM2011-23069 altres; 2014PFR-URV-B2-35
    DOI del artículo: 10.1016/j.cep.2017.08.001
    Entidad: Universitat Rovira i Virgili
    Año de publicación de la revista: 2017
    Página inicial: 57
    Tipo de publicación: Article Artículo Article
  • Palabras clave:

    Nitrats--Reciclatge
    Carbó activat
    Tractament anaeròbic
    Carbó biològicament activat
    Eliminació de nitrats
    Tratamiento anaerobio
    carbón biológicamente activado
    Eliminación de nitratos
    Anaerobic treatment
    Biological Activated Carbon
    Nitrate removal
    Enginyeria química
    Ingeniería química
    Chemical engineering
    0255-2701
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