Tags

Type your tag names separated by a space and hit enter

Operation of a horizontal subsurface flow constructed wetland--microbial fuel cell treating wastewater under different organic loading rates.
Water Res. 2013 Nov 01; 47(17):6731-8.WR

Abstract

The aim of the present work is to determine whether a horizontal subsurface flow constructed wetland treating wastewater could act simultaneously as a microbial fuel cell (MFC). Specifically, and as the main variable under study, different organic loading rates were used, and the response of the system was monitored. The installation consisted of a synthetic domestic wastewater-feeding system and a pilot-scale constructed wetland for wastewater treatment, which also included coupled devices necessary to function as an MFC. The wetland worked under continuous operation for 180 d, treating three types of synthetic wastewater with increasing organic loading rates: 13.9 g COD m(-2) d(-1), 31.1 g COD m(-2) d(-1), and 61.1 g COD m(-2) d(-1). The COD removal efficiencies and the cell voltage generation were continuously monitored. The wetland worked simultaneously as an MFC generating electric power. Under low organic loading rates, the wastewater organic matter was completely oxidised in the lower anaerobic compartment, and there were slight aerobic conditions in the upper cathodic compartment, thus causing an electrical current. Under high organic loading rates, the organic matter could not be completely oxidised in the anodic compartment and flowed to the cathodic one, which entered into anaerobic conditions and caused the MFC to stop working. The system developed in this work offered similar cell voltage, power density, and current density values compared with the ones obtained in previous studies using photosynthetic MFCs, sediment-type MFCs, and plant-type MFCs. The light/darkness changes caused voltage fluctuations due to the photosynthetic activity of the macrophytes used (Phragmites australis), which affected the conditions in the cathodic compartment.

Authors+Show Affiliations

Chemical Engineering Department, Institute for Chemical and Environmental Technology (ITQUIMA), University of Castilla-La Mancha, Avenida Camilo José Cela S/N, 13071 Ciudad Real, Spain. Electronic address: jose.villasenor@uclm.es.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

24074815

Citation

Villaseñor, J, et al. "Operation of a Horizontal Subsurface Flow Constructed Wetland--microbial Fuel Cell Treating Wastewater Under Different Organic Loading Rates." Water Research, vol. 47, no. 17, 2013, pp. 6731-8.
Villaseñor J, Capilla P, Rodrigo MA, et al. Operation of a horizontal subsurface flow constructed wetland--microbial fuel cell treating wastewater under different organic loading rates. Water Res. 2013;47(17):6731-8.
Villaseñor, J., Capilla, P., Rodrigo, M. A., Cañizares, P., & Fernández, F. J. (2013). Operation of a horizontal subsurface flow constructed wetland--microbial fuel cell treating wastewater under different organic loading rates. Water Research, 47(17), 6731-8. https://doi.org/10.1016/j.watres.2013.09.005
Villaseñor J, et al. Operation of a Horizontal Subsurface Flow Constructed Wetland--microbial Fuel Cell Treating Wastewater Under Different Organic Loading Rates. Water Res. 2013 Nov 1;47(17):6731-8. PubMed PMID: 24074815.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Operation of a horizontal subsurface flow constructed wetland--microbial fuel cell treating wastewater under different organic loading rates. AU - Villaseñor,J, AU - Capilla,P, AU - Rodrigo,M A, AU - Cañizares,P, AU - Fernández,F J, Y1 - 2013/09/12/ PY - 2013/06/11/received PY - 2013/08/23/revised PY - 2013/09/02/accepted PY - 2013/10/1/entrez PY - 2013/10/1/pubmed PY - 2014/5/23/medline KW - Cell voltage KW - Constructed wetland KW - Microbial fuel cell KW - Organic loading KW - Wastewater SP - 6731 EP - 8 JF - Water research JO - Water Res VL - 47 IS - 17 N2 - The aim of the present work is to determine whether a horizontal subsurface flow constructed wetland treating wastewater could act simultaneously as a microbial fuel cell (MFC). Specifically, and as the main variable under study, different organic loading rates were used, and the response of the system was monitored. The installation consisted of a synthetic domestic wastewater-feeding system and a pilot-scale constructed wetland for wastewater treatment, which also included coupled devices necessary to function as an MFC. The wetland worked under continuous operation for 180 d, treating three types of synthetic wastewater with increasing organic loading rates: 13.9 g COD m(-2) d(-1), 31.1 g COD m(-2) d(-1), and 61.1 g COD m(-2) d(-1). The COD removal efficiencies and the cell voltage generation were continuously monitored. The wetland worked simultaneously as an MFC generating electric power. Under low organic loading rates, the wastewater organic matter was completely oxidised in the lower anaerobic compartment, and there were slight aerobic conditions in the upper cathodic compartment, thus causing an electrical current. Under high organic loading rates, the organic matter could not be completely oxidised in the anodic compartment and flowed to the cathodic one, which entered into anaerobic conditions and caused the MFC to stop working. The system developed in this work offered similar cell voltage, power density, and current density values compared with the ones obtained in previous studies using photosynthetic MFCs, sediment-type MFCs, and plant-type MFCs. The light/darkness changes caused voltage fluctuations due to the photosynthetic activity of the macrophytes used (Phragmites australis), which affected the conditions in the cathodic compartment. SN - 1879-2448 UR - https://www.unboundmedicine.com/medline/citation/24074815/Operation_of_a_horizontal_subsurface_flow_constructed_wetland__microbial_fuel_cell_treating_wastewater_under_different_organic_loading_rates_ DB - PRIME DP - Unbound Medicine ER -