Chemical method converts toxic arsenic sludge into chip material

Researchers in Denmark have developed an innovative chemical process that transforms toxic arsenic waste—commonly found in sludge from groundwater treatment and mining operations—into a valuable metallic material suitable for use in semiconductors, batteries, and clean energy technologies. This breakthrough addresses the persistent environmental and disposal challenges posed by arsenic residues, which remain hazardous even after removal from water or ore. The process converts arsenic into a glassy metal form, which exhibits unique electrical and mechanical properties ideal for advanced industrial applications. Detailed atomic-level analysis conducted at the Canadian Light Source confirmed that the upcycled arsenic meets the technical standards required for electronics and energy systems. Led by scientists at the Geological Survey of Denmark and Greenland, the research marks a paradigm shift in arsenic waste management by turning a long-standing environmental liability into a strategic industrial resource. Given arsenic’s growing importance as a critical mineral in the transition to clean energy, this method could reduce pollution while supplying essential materials. The team now aims to scale the process beyond laboratory