The biomediated capture and utilization of CO2 requires the methanogen to be able to utilize captured CO2 and requires close contact between the capture agent and the methanogens. The microbial biocompatibility of the aqueous amine solutions was therefore a key element for evaluating the potential of utilizing methanogens for CO2 stripping. The ability to use captured CO2 and the biocompatibility to different MDEA amine concentrations in the scrubber solution was evaluated in batch bottles, where CO2 had been scrubbed from pure gas streams of CO2 and N2 in a ratio of 20:80 (Figure ). Evaluating the biocompatibility of the microbes to convert the absorbed CO2 and injected H2 into CH4 revealed an immediate improvement of 36.8%