An interview with the Jame's Tour lab reveals more about an alternative fly-ash cement, which is purified by 90 percent in a mere second.
how the team has since used a process called flash Joule heating to rapidly remove up to 90 percent of heavy metals in coal fly ash, making it fitter for infrastructure use.
Next, the mixture is inserted between two electrodes made of graphite or copper. A capacitor delivers a brief current pulse to the sample, which heats the sample to roughly 5,432 Fahrenheit . This high temperature prompts the heavy metals to vaporize and transform into a volatile stream, which is then captured.
"This is very meaningful for structural engineering and the construction industry because stronger structures can be built with less cement," he continued. "That is why this research is valuable to civil engineers."According to the researchers, their process also works for other hazardous wastes like red mud or bauxite residue, demonstrating that it could become a generalized approach for large-scale industrial solid waste decontamination.
"The electricity cost of the flash Joule heating process is approximately $30 per ton of treated materials," he said.didn't get into the details of this during the interview, the answer likely depends on the context., the electricity cost of the flash Joule heating process may be considered high.
He emphasized that this process releases carbon dioxide and consumes significant energy. Developing cement materials with a lower carbon footprint is crucial in mitigating greenhouse gas emissions.
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