Journal
BIORESOURCE TECHNOLOGY
Volume 319, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2020.124168
Keywords
Membrane; Microbial electrolysis cell; Hydrogen; Nafion; Chitosan; Polyvinyl alcohol
Funding
- Consejo Nacional de Ciencia y Tecnologia, Mexico [Fondo de Sustentabilidad Energetica] [247006]
- Direccion General del Personal Academico, Universidad Nacional Autonoma de Mexico [PAPIIT IN105119]
- United Nations University
- Agencia Nacional de Promocion de la Investigacion, Argentina [BID-PICT 2013-0033, BID-PICT 2014-0402]
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The study evaluated hydrogen production in MEC using a new membrane made of PVA/CS and compared its performance to Nafion. The results showed that MEC with PVA/CS had similar hydrogen production performance to Nafion, with improved acetate removal.
Hydrogen production was evaluated in two-chamber microbial electrolysis cells (MEC), where the chambers of the cell were separated using a new economical and environmentally friendly membrane made of poly (vinyl) alcohol/chitosan (PVA/CS). The MEC performance was compared to that of Nafion. The obtained results indicated that the MEC performance for hydrogen production did not show significant differences between the PVA/ CS and Nafion membranes. MEC with PVA/CS showed the hydrogen production rate and hydrogen yield of 1277 +/- 46 mL H(2)L(cat)(-1)d(-1) and 974 +/- 116 mL H-2 g(acetate)(-1), respectively. The PVA/CS membrane allowed acetate removal that was 7% higher than that of Nafion due to the lower pH gradient and a lower voltage drop that increased the ion transfer across the membrane.
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