Increased biological and cathodic hydrogen production using a novel integrated thermophilic fermenter and dual anion exchange membrane bioelectrochemical system
Nadali Alavi, Monireh Majlessi, Nazak Amanidaz, Mirzaman Zamanzadeh +1
AI summary
78% confidenceThis study presents an integrated thermophilic fermenter coupled with a dual anion exchange membrane bioelectrochemical system (MBED) for enhanced biohydrogen and cathodic hydrogen production from food waste and wastewater. The system separates volatile fatty acids (VFAs)—inhibitors of hydrogen production—while preserving nutrients, alkalinity, and pH in the bioreactor. By combining dark fermentation at 55°C with bipolar and anion exchange membranes, the approach achieved 632 mL/L higher biohydrogen production than control and simultaneously generated 50 mL cathodic hydrogen over 36 hours.
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Abstract
Many researchers are interested in utilizing renewable and sustainable energy made by exoelectrogenic bacteria during electrodialysis for the separation of minerals and organic matters from aqueous environments. The aim of this study was to develop a novel thermophilic fermenter and dual anion exchange membrane bioelectrochemical system for separating biohydrogen production inhibitors from the thermophilic fermenter and thereby increasing biological and cathodic hydrogen production by food waste and wastewater.•Using this innovative system the biohydrogen production inhibitors were separated and nutrients (for example ammonium), alkalinity, buffering capacity and pH were preserved in the bioreactor at the same time, led to higher biological and cathodic hydrogen production.
Keywords
Identifiers
- PubMed
- 35818447
- Journal
- MethodsX
- Year
- 2022