Our latest paper in Science Advances shows how arsenic removed during groundwater treatment can be upcycled into valuable materials essential for clean energy and electronics.

Researchers Tinatin Tkesheliadze and Kaifeng Wang recently collected high-quality arsenic K-edge XAS data at MAX IV Laboratory to investigate how arsenic-laden wastes can be upcycled into semiconductor raw materials.

We just wrapped up a two-week course on synchrotron-based X-ray methods for soil analysis at the University of Vienna. From XAS principles to EXAFS fitting, the class offered students an in-depth look at molecular-scale analysis techniques for environmental systems.

Our team participated in the 2025 Goldschmidt Conference in Prague, co-convening a session on “Use-inspired geochemistry: the science underpinning environmental solutions” and presenting new results on arsenic waste upcycling and phosphorus recovery from groundwater treatment sludge.

Tinatin collected spatially resolved μ-XAS and XRF data at SSRL (beamlines 14-3 and 2-3) to investigate how phosphorus is distributed and transformed in chemically-processed groundwater treatment sludge..

Exciting start to an invited professorship at the University of Vienna. Thanks to Prof. Stefan Krämer for the invitation and warm welcome. Looking forward to continuing the collaboration in the future!

Congratulations to Tinatin Tkesheliadze, first-year PhD student at GEUS and UCPH-PLEN, for winning the Best Poster Award at the DanScatt Annual Meeting 2025. Her poster on phosphate recovery from arsenic-laden groundwater treatment sludge demonstrates innovative methods for recovering valuable resources from wastes viewed as burdens.

Congratulations to Dr. Case van Genuchten, PURE Lab Leader, for receiving the 2025 James A. Morgan Early Career Award from Environmental Science & Technology! His pioneering research on upcycling arsenic from groundwater into valuable materials highlights the intersection of water treatment, environmental remediation, and resource recovery.