Out of sight, out of mind—that’s the typical fate of our wastewater. But there’s treasure in that trash, and Stanford researchers are tapping into it for nutrients and minerals, drinking water, energy, and information. Among those scientists is assistant professor of chemical engineering William Tarpeh, ’12, who was just named a 2025 MacArthur Fellow for his development of scalable methods for recovering valuable chemical resources from wastewater. He’s focused on extracting ammonia...
