Overview
I am the founding director of the Duke Smart Toilet Lab, dedicated to the opportunities that data-rich human excreta offer to improve individual and public health. The objective is to empower individuals and groups in communal living with health information for early warning of disease, health and wellness and management of chronic diseases through wastewater analysis, without any changes of daily habits. I am passionate about the opportunities that advanced sanitation technologies offer to improve global health and to provide a paradigm shift in health screening both for individuals and for communities.
As a major project of my research portfolio over the past 5 years, I have led the field testing of 10+ onsite sanitation technology prototypes from multiple organizations in international settings. I have managed yearlong deployments of sophisticated chemo-mechanical systems with electronic monitoring connected to wastewater pipes of buildings, ensuring no disruption of service to users while evaluating the treatment process performance.
Current Appointments & Affiliations
Recent Publications
Engineering field testing of non-sewered sanitation systems: Compendium of lessons learned
Book · February 15, 2025 Non-sewered sanitation systems (NSSS) treat human waste where it is generated, eliminating the need to transport it through sewers. They offer exciting opportunities for safely managed sanitation across the globe. Informed by the extensive experience of te ... Full text CiteLong-term, automated stool monitoring using a novel smart toilet: A feasibility study.
Journal Article Neurogastroenterol Motil · January 2025 BACKGROUND: Patients' report of bowel movement consistency is unreliable. We demonstrate the feasibility of long-term automated stool image data collection using a novel Smart Toilet and evaluate a deterministic computer-vision analytic approach to assess ... Full text Link to item CiteWomen’s toilet use behaviors and water use in a urine diversion squat pan toilet pilot
Journal Article Journal of Water Sanitation and Hygiene for Development · September 1, 2024 Understanding user behavior is critical to the adoption of technology; however, there is a paucity of data related to gender-specific sanitation practices and water-use patterns in toilet use despite the global imperative to increase attention toward the n ... Full text CiteRecent Grants
Field Testing in Coimbatore
ResearchPrincipal Investigator · Awarded by Bill and Melinda Gates Foundation · 2019 - 2025Compendium on lessons from RT Engineering Field Testing
ResearchPrincipal Investigator · Awarded by Bill and Melinda Gates Foundation · 2022 - 2024COVID Sampler: a wastewater collection technology optimized for pathogen surveillance at the building scale
ResearchPrincipal Investigator · Awarded by North Carolina Biotechnology Center · 2021 - 2022View All Grants