Author, as appears in the article.: Garcia-Martinez, Yonhara; Chirinos, Judith; Bengoa, Christophe; Stuber, Frank; Font, Josep; Fortuny, Agusti; Fabregat, Azael;

Department: Enginyeria Química

e-ISSN: 2076-3298

URV's Author/s: Bengoa, Christophe José / CHIRINOS CARDENAS, JUDITH ROSANA / Fabregat Llangostera, Azael / Font Capafons, José / GARCÍA MARTÍNEZ, YONHARA / Stüber, Frank Erich

Keywords: Water samples Volatile organic compounds Soil Removal Microbial-degradation Emerging pollutants Electrochemical oxidation Continuous fixed-bed reactor Compuestos orgánicos volátiles (cov) Compostos orgànics volàtils Chlorobenzene Carbón biológicamente activado Carbó biològicament activat Biological activated carbon Biodegradación anaerobia Biodegradació anaerobia Anaerobic biodegradation Adsorption Activated carbon 2,4-dichlorophenoxyacetic acid 2,4-d 2,4-dichlorophenoxyacetic acid

Abstract: The present work explores the biodegradation of some emerging pollutants (EPs) in an anaerobic slowly-agitated up-flow packed-bed reactor (USPBR) filled with biological activated carbon (BAC). Chlorobenzene (CB) and 2,4-dichlorophenoxyacetic acid (2,4-D) were selected as volatile organic compounds (VOC) and major constituents of many pesticides. Experiments carried out in continuous operation showed that bioconversion up to 90% was achieved for CB and 2,4-D, at space times below 0.6 h and 1.2 h, respectively, at ambient temperature. Overall, removal rates of 0.89 g L-1 d(-1) and 0.46 g L-1 d(-1) were obtained for CB and 2,4-D, respectively. These results revealed that the degradation of CB and 2,4-D in this anaerobic configuration of bioreactor is an efficient and fast process. The Michaelis-Menten model properly describes the degradation process for CB. Above initial concentrations of 100 mg L-1, 2,4-D presented a considerable inhibitory effect over the biofilm. For this reason, a substrate inhibition factor was included in the Michaelis-Menten equation; the expanded model presented a good fitting to the experimental data, regardless of the inlet concentration. Therefore, USPBR-BAC combination showed to be a highly efficient system for the biodegradation of such compounds.

Thematic Areas: Renewable energy, sustainability and the environment Management, monitoring, policy and law Geography, planning and development General environmental science Environmental sciences Environmental science (miscellaneous) Environmental science (all) Ecology, evolution, behavior and systematics Ecology Ciencias sociales

licence for use: thttps://creativecommons.org/licenses/by/3.0/es/

ISSN: 07116780

Author's mail: jose.font@urv.cat afabrega@urv.cat christophe.bengoa@urv.cat frankerich.stuber@urv.cat

Author identifier: 0000-0002-4007-7905 0000-0002-5525-5401 0000-0001-9160-5010 0000-0001-9424-1400

Record's date: 2023-02-22

Journal volume: 5

Papper version: info:eu-repo/semantics/publishedVersion

Link to the original source: https://www.mdpi.com/2076-3298/5/11/115

Licence document URL: http://repositori.urv.cat/ca/proteccio-de-dades/

Papper original source: Environments. 5 (11):

APA: Garcia-Martinez, Yonhara; Chirinos, Judith; Bengoa, Christophe; Stuber, Frank; Font, Josep; Fortuny, Agusti; Fabregat, Azael; (2018). Fast Aqueous Biodegradation of Highly-Volatile Organic Compounds in a Novel Anaerobic Reaction Setup. Environments, 5(11), -. DOI: 10.3390/environments5110115

Article's DOI: 10.3390/environments5110115

Entity: Universitat Rovira i Virgili

Journal publication year: 2018

Publication Type: Journal Publications