1. Center for Microbial Ecology and Technology (CMET), Ghent University, Coupure Links 653, 9000 Gent, Belgium
2. Bio- and Chemical Systems Technology, Reactor Engineering, and Safety (CREaS) Division, Department of Chemical Engineering, KU Leuven, Celestijnenlaan 200F (box 2424), 3001 Leuven, Belgium
3. Isotope Bioscience Laboratory (ISOFYS), Ghent University, Coupure Links 653, 9000 Gent, Belgium