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<p>The rapid growth of the global population has led to an increased demand for various industrial products, resulting in a significant escalation of synthetic dye usage in industries. The persistence of stable dyes poses a severe environmental threat. Conventional wastewater treatment methods face limitations, emphasizing the need for efficient and cost-effective solutions to tackle the high organic pollution, toxicity, and aesthetic issues caused by dye contamination. An abundantly available yellow stone powder (YSP) in its original and calcinized yellow stone powder (CYSP) was used effectively in dye removal. A good dye removal capacity was observed at optimized conditions. At optimized pH 5, dose of 0.005&#xa0;g/10&#xa0;mL, dye concentration of 50&#xa0;ppm and temperature of 40&#xa0;°C, the obtained adsorption capacities were 97.8 and 98.5&#xa0;mg/g for the original and CYSP, respectively. To enhance dye removal capacity further, CYSP and iron cadmium oxide composite (CYSP-FeCdO composite) having magnetic properties and porous structure was prepared. The study emphasized the need to adopt low-cost, sustainable adsorbents for efficient acid green dye removal, addressing the critical issue of industrial water pollution. The findings pave the way for environmentally responsible measures to prevent water pollution, promote a healthy environment, and protect valuable water resources.</p>

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Enhanced dye removal performance of yellow stone waste powder via cadmium iron oxide coating and study of its mechanism

  • 期刊论文

  • 发表日期：

    2025年3月31日

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  • Rabia Shaheen,
  • Muhammad Asif Hanif

摘要

The rapid growth of the global population has led to an increased demand for various industrial products, resulting in a significant escalation of synthetic dye usage in industries. The persistence of stable dyes poses a severe environmental threat. Conventional wastewater treatment methods face limitations, emphasizing the need for efficient and cost-effective solutions to tackle the high organic pollution, toxicity, and aesthetic issues caused by dye contamination. An abundantly available yellow stone powder (YSP) in its original and calcinized yellow stone powder (CYSP) was used effectively in dye removal. A good dye removal capacity was observed at optimized conditions. At optimized pH 5, dose of 0.005 g/10 mL, dye concentration of 50 ppm and temperature of 40 °C, the obtained adsorption capacities were 97.8 and 98.5 mg/g for the original and CYSP, respectively. To enhance dye removal capacity further, CYSP and iron cadmium oxide composite (CYSP-FeCdO composite) having magnetic properties and porous structure was prepared. The study emphasized the need to adopt low-cost, sustainable adsorbents for efficient acid green dye removal, addressing the critical issue of industrial water pollution. The findings pave the way for environmentally responsible measures to prevent water pollution, promote a healthy environment, and protect valuable water resources.