Sustainable and cost-effective metastable white cast iron powder for the degradation of textile dyes

Le résumé fourni par la source

The textile industry is one of the main consumers of dyes. The treatment of wastewater containing dyes is a major challenge worldwide for a sustainable and environmental friendly goods production. Therefore, it is necessary to develop an effective method for removing the dyes from wastewater. In this study, an economical and efficient white cast iron powder was reported to degrade reactive red 195A azo dye in an aqueous solution. The white cast iron powder was obtained by ball-milling a rapidly solidified cast iron ribbon, exhibiting unique metastable properties and a large surface area. These metastable phases are particularly effective in providing electrons for the dye degradation of N N double bonds, thereby improving the catalytic process, and enhancing the overall bond degradation efficiency. The influence of different parameters such as temperature, dye concentration, and reusability of metallic iron powder on the degradation efficiency was investigated. The experimental analysis revealed rapid and efficient dye degradation that was achieved within 15 min using 0.1 g of white cast iron powder. The study also demonstrated the effectiveness of the degradation rate improved significantly with an increase in temperature. Even after seven recycling experiments, the Fe 82 C 15 Si 3 powders maintained high degradation efficiency toward the reactive red 195A solutions. This research will contribute to developing a new, highly efficient, and low-cost method for treating organic dye wastewater. • An innovative and cost-effective method of producing white cast iron powder. • White cast iron powder is highly effective in degrading reactive red 195A dye solution. • Degradation rate is enhanced with higher reaction temperatures.

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