<p>In this study, activated carbon modified with aluminum and calcium phosphate was synthesized and applied for adsorptive remediation of uranium from water. The materials were characterized using various techniques, including FTIR, SEM EDS, and XRD, while their optimal adsorption conditions were investigated. The study provides a comprehensive analysis of the adsorption mechanisms, as well as the isotherms and kinetics involved. The adsorption capacities were measured at 24.5&#xa0;mg/g for aluminum-modified activated carbon and 58&#xa0;mg/g for calcium phosphate-modified activated carbon at neutral pH, achieving an efficiency of over 94% in just 5&#xa0;min. Additionally, the effectiveness of these materials in treating real groundwater samples was evaluated, considering the interference from common anions, and they exhibited significant uranium removal rates from contaminated groundwater.</p>

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Remediation of uranium from groundwater: characterization and utilization of activated carbon modified with aluminum and calcium phosphate

  • Kuncham Kuntaiah,
  • Anitha Mary Thomas,
  • Mastan Vali Rajavarapu,
  • Mareswara Rao Korra,
  • S. S. Nandakishore

摘要

In this study, activated carbon modified with aluminum and calcium phosphate was synthesized and applied for adsorptive remediation of uranium from water. The materials were characterized using various techniques, including FTIR, SEM EDS, and XRD, while their optimal adsorption conditions were investigated. The study provides a comprehensive analysis of the adsorption mechanisms, as well as the isotherms and kinetics involved. The adsorption capacities were measured at 24.5 mg/g for aluminum-modified activated carbon and 58 mg/g for calcium phosphate-modified activated carbon at neutral pH, achieving an efficiency of over 94% in just 5 min. Additionally, the effectiveness of these materials in treating real groundwater samples was evaluated, considering the interference from common anions, and they exhibited significant uranium removal rates from contaminated groundwater.