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Domestic wastewater treatment in parallel with methane production in a microbial electrolysis cell

R. Moreno, M.I. San-Martín, A. Escapa and A. Morán

Renewable Energy, 2016, vol. 93, issue C, 442-448

Abstract: Microbial electrolysis cells (MECs) have great potential as a technology for wastewater treatment in parallel to energy production. In this study we explore the feasibility of using a low-cost, membraneless MEC for domestic wastewater treatment and methane production in both batch and continuous modes. Low-strength wastewater can be successfully treated by means of an MEC, obtaining significant amounts of methane. The results also suggest that hydrogenotrophic methanogenesis reduce the incidence of homoacetogenic activity, thus improving the overall MEC performance. However, gas production rates are low and important aspects such as methane solubility in water still remain a challenge. Overall, MECs can offer competitive advantages not only for low-strength wastewater treatment but also as an aid to anaerobic methane production by improving the chemical oxygen demand (COD) removal and methane production rates.

Keywords: Microbial electrolysis cell; MEC; Methane; Electromethanogenesis; Wastewater (search for similar items in EconPapers)
Date: 2016
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Citations: View citations in EconPapers (6)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:93:y:2016:i:c:p:442-448

DOI: 10.1016/j.renene.2016.02.083

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