We use our expertise in microbial ecology and extremophile microbial communities to better monitor and improve industrial processes, which rely on microbial activities. Several industrial applications take advantage of natural microbial processes. These include for example the purification of wastewater and the production of alternative energy, such as biogas. We work together with different industrial partners to optimize such processes by manipulating microbial communities involved in these processes. We use a variety of experimental approaches and test the effects of our experimental manipulations using state-of-the-art molecular tools.