Wetsus & Wageningen University & Research
Dr. Cees J.N. Buisman serves as an Executive Board Member at Wetsus, European centre of excellence for sustainable water technology. He is also a full Professor at the sub-department of Environmental Technology at Wageningen University in the field of biological reuse and recovery technology since 2003. His current research interest in on bio-electrochemistry, novel methods of fermentation, and biological induced solid production, both for recovery of energy, chemicals and minerals.
Before joining the university, he held the position of Director Technology and Business Development of Paques BV from 1990 until 2003 where he was responsible for the introduction of several newly developed environmental technologies into the market.
Dr. Buisman is member of The Netherlands Academy of Technology and Innovation and serves on several Advisory Boards and Supervisory Boards. He obtained his M.Sc. and Ph.D. degree from Wageningen University & Research.
Conventional processes for ammonium removal are biological processes, like (de)nitrification and Annamox®. In both cases the ammonium is converted to nitrogen gas and all potential energy is lost. On top of that about 1-2% of ammonium will be discharged as N2O which is an unwanted strong greenhouse gas. Alternative treatment methods try to recover the ammonium as concentrated streams that can be reused, recovering the energy potential and preventing N2O emissions. But these alternative methods, like stripping, use a lot of energy.