Tratamiento de agua residual doméstica mediante un reactor RAFA y una celda microbiana de combustible (Treatment of domestic wastewater in a UASB reactor and a microbial fuel cell)

Type of content
Journal Article
Thesis discipline
Degree name
Publisher
University of Canterbury. Civil and Natural Resources Engineering
Journal Title
Journal ISSN
Volume Title
Language
Date
2016
Authors
Martínez-Santacruz, C.Y.
Herrera-López, D.
Gutiérrez-Hernández, R.F.
Bello-Mendoza, R.
Abstract

The performance of a system consisting of an up-flow anaerobic sludge blanket (UASB) reactor and a microbial fuel cell (MFC) for the treatment of low-strength wastewater and the recovery of energy was evaluated. The UASB reactor (1 L) was continuously fed with raw domestic wastewater under hydraulic retention times (HRT) of 12 and 6 h. The MFC (250 mL) was operated in batch mode and fed with either raw wastewater (HRT = 12 h) or the effluent from the UASB reactor (HRT = 6 h). It was found that the removal of organic matter by the coupled UASB–MFC system (88 % chemical oxygen demand (COD), 75 % total organic carbon (TOC) and 79 % total suspended solids (TSS)) was higher than the levels obtained by the UASB reactor (76 % COD, 66 % TOC and 73 % TSS) and the MFC (60 % COD, 53 % TOC and 40 % TSS) when these were operated individually. The highest power density obtained in the MFC was 176 mW/m2 with 1000 Ω resistance, whereas the coulombic efficiency was 8 %. The UASB-MFC system proved to be a good alternative for the treatment of wastewater and the simultaneous generation of electricity even under substrate limiting conditions, such as low concentration of organic matter in the influent.

Description
Citation
Martínez-Santacruz, C.Y., Herrera-López, D., Gutiérrez-Hernández, R.F., Bello-Mendoza, R. (2016) Tratamiento de agua residual doméstica mediante un reactor RAFA y una celda microbiana de combustible (Treatment of domestic wastewater in a UASB reactor and a microbial fuel cell). Revista Internacional de Contaminación Ambiental, 32(3), pp. 267-279.
Keywords
Ngā upoko tukutuku/Māori subject headings
ANZSRC fields of research
Field of Research::09 - Engineering::0904 - Chemical Engineering::090409 - Wastewater Treatment Processes
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