Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 549363
Title Anaerobic biological fermentation of urine as a strategy to enhance the performance of a microbial electrolysis cell (MEC)
Author(s) Barbosa, Sónia G.; Rodrigues, Telma; Peixoto, Luciana; Kuntke, Philipp; Alves, Maria Madalena; Pereira, Maria Alcina; Heijne, Annemiek Ter
Source Renewable Energy 139 (2019). - ISSN 0960-1481 - p. 936 - 943.
Department(s) Biological Recovery & Re-use Technology
Publication type Refereed Article in a scientific journal
Publication year 2019
Keyword(s) H NMR - Anaerobic digestion - Fermented human urine - Microbial electrolysis cell - Raw human urine - Two-stage bioconversion process
Abstract This study investigated the effect of pre-fermented urine on anode performance of a two-chambered microbial electrolysis cells (MECs) compared to raw urine. Pre-fermentation of urine was performed by anaerobic digestion. The effect of this pre-fermentation on anode performance of a MEC was assessed by measuring the removal of chemical oxygen demand (COD), current density and Coulombic efficiency (CE). The MEC using fermented urine achieved a higher average current density (218 ± 6 mA m−2) and a higher CE (17%). Although no significant differences were observed in the COD removal efficiency between both urines, the MEC using fermented urine displayed the highest COD removal rate (0.14 ± 0.02 g L−1 d −1). The organic compounds initially found in both urines, as well as the metabolic products associated to the biodegradation of the organic matter were analyzed by proton nuclear magnetic resonance (H NMR). The main compounds initially identified in the raw urine were urea, creatinine and acetate. In the fermented urine, the main compounds identified were methylamine, acetate and propionic acid demonstrating the effectiveness of the anaerobic fermentation step.
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