David Strik is Associate Professor in Environmental Technology at Wageningen University & Research/The Netherlands. He obtained a PhD on Anaerobic Digestion from BOKU University Vienna/Austria in 2004 and an MSc Environmental Engineering from Wageningen University/The Netherlands in 1999. Currently his research group pioneers on 'Engineering Open-Culture Waste to Resource Fermentation & Separation Biorefineries. Waste streams like heterogenous organic waste, CO2, rhizodeposits, syngas and plastics are used in fermentations as well as electricity driven biotechnologies to produce chemicals like medium chain fatty acids. The chemicals can be used a feed-additive, plant-growth promotor, or pre-cursor for biodegradable plastics, fuels and more.