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Salar-García, M. J.; Gajda, I.; Ortiz-Martínez, V. M.; Greenman, J.; Hanczyc, M.; de los Ríos, A. P.; Ieropoulos, I. (2016)
Publisher: Elsevier
Journal: Bioresource Technology
Languages: English
Types: Article
Subjects: Waste Management and Disposal, Environmental Engineering, Bioengineering
In this work, the by-product generated during the operation of cylindrical MFCs, made out of terracotta, is investigated as a feasible means of degrading live microalgae for the first time. In addition to the low cost materials of this design, the reuse of the solution produced in the cathode renders the technology truly green and capable of generating bioenergy. In this study, the effect of a light/dark cycle or dark conditions only on the digestion of live microalgae with the catholyte is investigated. The results show that a combination of light/dark improves the degradation of algae and allows them to be used as substrate in the anode. The addition of 12.5 mL of a 1:1 mix of catholyte and microalgae (pre-digested over 5 days under light/dark) to the anode, increases the power generation from 7 µW to 44 µW once all the organic matter in the anode have been depleted.

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