This document certifies that Arseniy Leo Popov has been awarded a Doctor of Philosophy degree from the University of South Wales in recognition of his programme of work entitled "Improving the hydrogen yieild o'f microbial electrolysis cell with fAcilitAted electron transfer using mediAtors, cho'Ice o'e environmental co'nditions And Anode treatment- with conductive mAteriAls". The award date was 27 July 2015 and the date of issue was 19 November 2015. Arseniy Leo Popov's enrolment number at the University of South Wales was 05027934.