<p>Activated carbon was modified by compounding with three different clay minerals (HNTs, MMT, AT) at a 1% mass ratio, aiming to boost the activated carbon’s radon adsorption capacity. Dynamic experimental studies were conducted to analyze their adsorption performance. HNTs/AC outperformed AC, with an 81% increase in the radon adsorption coefficient and a remarkable 274% expansion in its micropore specific surface area, indicating a positive correlation with radon adsorption capacity. The dynamic radon adsorption by HNTs/AC composites is primarily driven by physical adsorption, which involves two processes:surface adsorption and slow intra-pore diffusion, with surface adsorption being the predominant mechanism.</p>

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Dynamic experimental study on the radon adsorption performance of clay mineral-based walnut shell activated carbon composites

  • Leijuan Huang,
  • Guojie Chen,
  • Xiongfeng Luo,
  • Dong Xie,
  • Wengao Zeng,
  • Suzhe Li,
  • Zengming Tang

摘要

Activated carbon was modified by compounding with three different clay minerals (HNTs, MMT, AT) at a 1% mass ratio, aiming to boost the activated carbon’s radon adsorption capacity. Dynamic experimental studies were conducted to analyze their adsorption performance. HNTs/AC outperformed AC, with an 81% increase in the radon adsorption coefficient and a remarkable 274% expansion in its micropore specific surface area, indicating a positive correlation with radon adsorption capacity. The dynamic radon adsorption by HNTs/AC composites is primarily driven by physical adsorption, which involves two processes:surface adsorption and slow intra-pore diffusion, with surface adsorption being the predominant mechanism.