Comments on “Reduction in carbon dioxide and production of methane by biological reaction in the electronics industry” by Kim et al., International Journal of Hydrogen Energy 2013;38:3488–3496

In the comments, energy consumption for H2 production and CO2 fixation are balanced to evaluate the validity of a ‘novel’ electrocoagulation defluoridation process, which was addressed to have a potential to simultaneously reduce CO2 emission and generate energy (CH4). After the balance calculation, it becomes clear that the proposed process seems unreasonable in energy balance. On the contrary, the process is an energy-intensive system, associated with a net CO2 emission.