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Vapor Fed Bio Hybrid Fuel Cell

 Marcus S. Benyamin, Justin P. Jahnke, David M. Mackie
Description: Concentration and purification of ethanol and other biofuels from fermentations are energy-intensive processes, with amplified costs at smaller scales. To circumvent the need for these processes, and to potentially reduce transportation costs as well, we have previously investigated bio-hybrid fuel cells (FCs), in which a fermentation and FC are closely coupled. However, long-term operation requires strictly preventing the fermentation and FC from harming each other. We introduce here the concept of the vapor-fed bio-hybrid FC as a means of continuously extracting power from ongoing fermentations at ambient conditions. By bubbling a carrier gas (N2) through a yeast fermentation and then through a direct ethanol FC, we protect the FC anode from the catalyst poisons in the fermentation (which are non-volatile), and also protect the yeast from harmful FC products (notably acetic acid) and from build-up of ethanol.
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Domain: Energy
Category: Biomass
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Biotechnology for Biofuels

Benyamin et al. Biotechnol Biofuels (2017) 10:68
DOI 10.1186/s13068-017-0755-7

Open Access


Vapor‑fed bio‑hybrid fuel cell
Marcus S. Benyamin†, Justin P. Jahnke† and David M. Mackie*†

Background:  Concentration and purification of ethanol and other biofuels from fermentat ... See more

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