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
URL Documento de licencia: https://repositori.urv.cat/ca/proteccio-de-dades/
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
Repositori URV