The NUMiX Team

NUMiX was founded in 2018 to address problems at the intersection of water, waste, and critical metal value chains.

Our founding team members have backgrounds in water treatment, environmental health and safety, chemical and mechanical engineering, materials science and law with the breadth and depth to understand and address your unique challenges with metal removal from water.

Katie Kollhoff


Katie has over ten years of experience with chemical process performance and chemical safety management with a range of clients from the chemical process industries to major food processing to R&D. Throughout, she has been managing hazardous materials with an eye on waste reduction and beneficial reuse. She holds a Master’s of Engineering Management degree from Northwestern University, a BS in chemical engineering and a BA in Spanish Language and Literature both from the University of Kansas. Finding, communicating, and tackling big, worthwhile problems with a notable effect on people and the planet is her passion.

Matt Heise


Matt has over ten years of engineering and management experience in energy and water/wastewater process engineering. He completed graduate studies in business strategy, finance, accounting, and marketing. Matt has a background in mechanical engineering, a Master's in Engineering Management from Northwestern, and a passion for energy and water resource optimization.

Ian Wiese


Ian Wiese joined NUMIX as the chief technology officer in late 2018. In this role, he invents, screens, and manufactures candidate materials for specific customer processes. He also leads process and application scale up for deployment of sorbent materials and harvesting of critical metals. Having managed metal foundries for the past seven years, Ian's rich experience with large scale production, complemented by innovation at the molecular scale, informs our product mix. With a background in materials science & engineering and a Master of Engineering Management from Northwestern, Ian's technical drive and business savvy round out the NUMiX team.

Olivia Lugar

Co-Founder & Advisor

Laurelle Banta