1Vlaamse Instelling voor Technologisch Onderzoek (VITO), Environmental Technology, Boeretang 200, B-2400 Mol, Belgium
2Paques bv, T. de Boerstraat 24, NL-8561 EL Balk, The Netherlands
3Umicore nv, UM Research, Kasteelstraat 7, B-2250 Olen, Belgium
4School of Biosciences, University of Birmingham, Birmingham B15 2TT, UK
5Institut für Mikrobiologie, Technikerstrasse 25, A-6020 Innsbruck, Austria
6Montanwerke Brixlegg GmbH, Austria
7Laboratory of Environmental Engineering, National Technical University of Athens, Heroon Polytechniou 9, Zografou, Athens, GR 15780, Greece