Scholarlink

<p>The presence of toxic heavy metals such as cadmium and lead in wastewater poses a serious environmental and health risk due to their persistence and bioaccumulation. In this study, a novel polystyrene/sulfonated bentonite nanocomposite (PS/NSB) was synthesized from low-cost materials and applied as an efficient adsorbent for Cd(II) and Pb(II) removal from aqueous solutions. Structural and morphological characterizations (TEM, FTIR, TGA, SEM, and EDX) confirmed successful functionalization and enhanced surface area. Batch adsorption experiments demonstrated high uptake capacities (200&#xa0;mg/g for Cd(II) and 135.13&#xa0;mg/g for Pb(II)), with kinetics following the pseudo-second-order model and equilibrium fitting the Langmuir isotherm, indicating monolayer chemisorption. The nanocomposite exhibited good regeneration over successive cycles, underscoring its reusability. After treatment, residual concentrations of Cd(II) and Pb(II) were reduced to below 0.01&#xa0;mg/L, meeting WHO/FAO discharge standards. These findings highlight the novelty and practical potential of PS/NSB as a cost-effective and sustainable material for wastewater treatment.</p> Graphical Abstract <p></p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Synthesis and Application of Polystyrene/Sulfonated Bentonite Nanocomposite for Efficient Adsorptive Removal of Toxic Heavy Metals from Wastewater Solutions

  • 期刊论文

  • 发表日期：

    2026年5月5日

查看全文
  • Safwat AbdelHaleem Mahmoud,
  • Ahmed Hussein Orabi,
  • Jihad Yasser Muhammad,
  • Eman Mohamed Shoukry,
  • Eman Fares Mohamed,
  • Eman AboBakr Ali

摘要

The presence of toxic heavy metals such as cadmium and lead in wastewater poses a serious environmental and health risk due to their persistence and bioaccumulation. In this study, a novel polystyrene/sulfonated bentonite nanocomposite (PS/NSB) was synthesized from low-cost materials and applied as an efficient adsorbent for Cd(II) and Pb(II) removal from aqueous solutions. Structural and morphological characterizations (TEM, FTIR, TGA, SEM, and EDX) confirmed successful functionalization and enhanced surface area. Batch adsorption experiments demonstrated high uptake capacities (200 mg/g for Cd(II) and 135.13 mg/g for Pb(II)), with kinetics following the pseudo-second-order model and equilibrium fitting the Langmuir isotherm, indicating monolayer chemisorption. The nanocomposite exhibited good regeneration over successive cycles, underscoring its reusability. After treatment, residual concentrations of Cd(II) and Pb(II) were reduced to below 0.01 mg/L, meeting WHO/FAO discharge standards. These findings highlight the novelty and practical potential of PS/NSB as a cost-effective and sustainable material for wastewater treatment.

Graphical Abstract