Abstract

A microbial electrolysis cell (MEC) is an environmentally friendly bioelectrochemical hydrogen production technology. The technology is accomplished by anodic bio-catalytic oxidation and cathodic reduction processes. An MEC operation requires an external energy input rendering the system a less sustainable option. Studies demonstrate that integration of MEC systems with advanced technologies such as photoelectrochemical cells supports the self-sustainability of the system. In this chapter, we outline MEC fundamentals and theoretical yields of MEC systems. Furthermore, we introduce the potential barriers and discuss the recent developments in MEC systems that yielded promising self-sustainable MEC technology. Moreover, we provide a conceptual overview of possible MEC reactor designs and configurations in order to achieve suitable benches in commercial hydrogen production.

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