Coal fly ash (CFA) is an attractive cement diluent additive but contains heavy metals which could slowly leach out. Deng, Meng and colleagues report a rapid and water-free process to remove the heavy metals from CFA using flash joule heating. This approach reduces the energy consumption for CFA purification as well as other industrial wastes decontamination.
- Bing Deng
- Wei Meng
- James M. Tour