Hydrogen production from macroalgae by simultaneous dark fermentation and microbial electrolysis cell with surface-modified stainless steel mesh cathode

Tipo de material: Texto

TextoSeries ; International Journal of Hydrogen Energy, 46(79), p.39136-39145, 2021Trabajos contenidos:

Yun, W. H
Yoon, Y. S
Yoon, H. H
Nguyen, P. K. T
Hur, J

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Resumen: An affordable cathode material for microbial electrolysis cells (MECs)was synthesized via surface-modification of stainless steel mesh (SSM)by anodization. The anodization parameters, such as wire mesh size, temperature, applied voltage, operating time, were optimized. The surface-modified SSM (smSSM)exhibited porous surface and higher specific surface area. The as synthesized smSSMs were utilized as freestanding cathodes in a conventional microbial electrolysis cell (MEC)and a simultaneous dark fermentation and MEC process (sDFMEC). The H2 production in MEC and sDFMEC with smSSM as cathode was approximately 150 percent higher than that with SSM. The performance of smSSM was 67-75 percent of that of Pt/C. The sDFMEC with smSSM as cathode was stable for 12 cycles of fed-batch operation in 60 days. Overall, energy conversion from S. japonica by sDFMEC was as high as 23.4 percent.

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An affordable cathode material for microbial electrolysis cells (MECs)was synthesized via surface-modification of stainless steel mesh (SSM)by anodization. The anodization parameters, such as wire mesh size, temperature, applied voltage, operating time, were optimized. The surface-modified SSM (smSSM)exhibited porous surface and higher specific surface area. The as synthesized smSSMs were utilized as freestanding cathodes in a conventional microbial electrolysis cell (MEC)and a simultaneous dark fermentation and MEC process (sDFMEC). The H2 production in MEC and sDFMEC with smSSM as cathode was approximately 150 percent higher than that with SSM. The performance of smSSM was 67-75 percent of that of Pt/C. The sDFMEC with smSSM as cathode was stable for 12 cycles of fed-batch operation in 60 days. Overall, energy conversion from S. japonica by sDFMEC was as high as 23.4 percent.

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