1. Laboratory
of Microbial Ecology and Technology, Ghent University, Coupure Links
653, B-9000 Ghent, Belgium
2. Centre
for Microbial Electrosynthesis, The University of Queensland, Brisbane, Queensland 4072, Australia
3. Advanced
Water Management Centre, The University of Queensland, Brisbane, Queensland 4072, Australia
4. School
of Chemistry, University of New South Wales, Sydney, New South Wales 2052, Australia