Formulation of new designs and processing parameters for continuous hydrogen production

Dr Lakhveer Singh, Assistant Professor in the Department of Environmental Science, SRM University-AP, sets forth advanced avenues of scientific research on maintaining high current densities which is a key challenge in scaling-up microbial electrolysis cell (MEC) reactors.

“Scaling-up Up-flow Microbial Electrolysis Cells with a Compact Electrode Configuration for Continuous Hydrogen Production”, published in the Bioresource Technology journal is about a novel 10 L microbial electrolysis cell (MEC) reactor with a total electrode surface area greater than 1 m2 was designed and evaluated for hydrogen production. Performances of the reactor suggest that the longitudinal structure with the parallel vertical orientation of the electrodes encouraged high fluid mixing and the sheet metal electrode frames provided distributed electrical connection. A high volumetric H2 production rate of 5.9 L/L/d was achieved at a volumetric current density of 970 A/m3 (34 A/m2). The Impact factor of the journal is 7.53.

Dr Singh encapsulates that the technology and the model to be developed can be used to formulate new designs and processing parameters for producing H2 from other types of feedstocks and/or using engineered microbes developed by other researchers, which could solve the fuel problem for modern society. This work has been done in collaboration with Prof. Hong Liu from Oregon State University (OSU), USA.

Dr Singh is an Editorial Board member of the Journal of Biomass Conversion and Biorefinery – Springer (I.F. 2.60) and a Guest Editor for Bioresource Technology Reports- Elsevier. His future research targets to reduce the component costs and test the proposed design using real waste streams, as well as continue to increase the reactor volume.

Read the full paper here: https://doi.org/10.1016/j.biortech.2021.125030

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