Carbon dioxide (CO2) valorization for the production of different commodity chemicals is a highly desired approach to moderate CO2emissions into the atmosphere.
The versatility of microbial electrochemical technologies makes it possible to use them for carbon capture and utilization. This is mainly achieved through two novel processes, namely: microbial electrosynthesis and electro-fermentation. These processes allow CO2 conversion (and some of its organic derivatives) into a wide variety of valuable products such as carboxylic acids and alcohols by means of an external electrical input.
This chapter focuses on different aspects of these bioelectrochemical CO2 valorization approaches and reviews their key challenges and future perspectives from a technological and economical point of view.