Tukayi Kudanga is currently researcher at the Durban University of Technology in South Africa. Gibson Nyanhongo is staff member of BOKU Institute of Environmental Biotechnology. Both scientists are from Simbabwe, but they got to know each other in Austria at the Technical University in Graz. They were supervised by Prof. Georg Gübitz. For many years now they have common research activities and continue their cooperation within a recently awarded scientic and technological cooperation project Austria – South Africa. The Scientific & Technological Cooperation (S&T Cooperation) is based on inter-governmental and bilateral agreements for cooperations in the fields of science and technology. The financial support is intended for research visits within the framework of concrete scientific cooperation projects with researchers from partner countries of the Scientific & Technological Cooperation; the basic funding of the research projects must be secured from other sources. Funding is available mainly for travel and accommodation costs.