Optimization of the Co-extraction of Lithium and Silicon from Fly Ash Through the Carbochlorination Process: A Response Surface Methodology Approach

This article delves into the optimization of co-extracting lithium and silicon from fly ash using the carbochlorination process, a method that stands out for its environmental and economic benefits. The study employs response surface methodology to optimize the extraction process, focusing on key parameters such as temperature, time, carbon content, oxygen content, and flow rate. The results demonstrate the effectiveness of the carbochlorination process, achieving high extraction efficiencies for both lithium and silicon. The article also explores the advantages of this method over traditional alkali and acid methods, highlighting its potential for reducing environmental impact and improving economic viability. Additionally, the study provides insights into the co-extraction mechanism and the characterization of the fly ash and residues using XRD and SEM analysis. The findings offer a promising approach for the sustainable and efficient recovery of valuable elements from fly ash, contributing to the advancement of resource recovery technologies.