1. Institute of Chemical Engineering and Environmental Technology, Graz University of Technology, NAWI Graz, Inffeldgasse 25/C, 8010 Graz, Austria
2. DDBST GmbH, Marie-Curie-Straße 10, 26129 Oldenburg, Germany
3. University of KwaZulu-Natal, King George V Avenue, Durban 4041, South Africa
4. Carl von Ossietzky University of Oldenburg, Carl-von-Ossietzky-Straße 9-11, 26129 Oldenburg, Germany