Evaluation of Cr(VI) adsorption capacity in aqueous solution using material recovered from steel slag

https://doi.org/10.31130/ud-jst.2025.23(6A).012E

Tóm tắt: 43 | PDF: 25

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Author

  • Hoang Le Phuong
    Thai Nguyen University of Technology, Thai Nguyen City, Vietnam

Từ khóa:

Adsorption
Steel slag (SS)
Cr(VI) removal

Tóm tắt

Steel slag (SS), an industrial by-product, has been investigated as a cost-effective adsorbent for removing hexavalent chromium Cr(VI) from aqueous solutions. Unlike previous studies that primarily focused on conventional adsorbents, this research systematically investigates the adsorption behavior of SS, emphasizing its kinetic and isotherm characteristics. Batch experiments revealed that Cr(VI) adsorption reached equilibrium within 150 minutes under acidic conditions, with optimal performance at pH 3. Adsorption kinetics followed the pseudo-second-order model (R²=0.985), indicating chemisorption dominance. The Langmuir isotherm provided the best fit (R²=0.986), with a maximum adsorption capacity of 13.32 mg/g at an initial Cr(VI) concentration of 20 mg/L, suggesting monolayer adsorption on uniform sites. This study provides novel insights by demonstrating the effectiveness of SS as an alternative low-cost adsorbent that has not yet received specific attention in Vietnam. These findings confirm the feasibility of SS for Cr(VI) removal, contributing to environmentally friendly water treatment solutions.

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Jun 30, 2025
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Phuong, H. L. “Evaluation of Cr(VI) Adsorption Capacity in Aqueous Solution Using Material Recovered from Steel Slag”. Tạp Chí Khoa học Và Công nghệ - Đại học Đà Nẵng, vol 23, số p.h 6A, Tháng Sáu 2025, tr 55-60, doi:10.31130/ud-jst.2025.23(6A).012E.

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