Scholarlink

<p>Water scarcity and contamination demand efficient wastewater treatment technologies that are both effective and sustainable. In this study, a waste‑derived zeolite/hydroxyapatite nanocomposite (W‑ZEO/HAP‑NC) was synthesized from rice‑husk‑derived silica and aluminum‑can waste and evaluated for its versatile, dual-functional capacity to remove both Cd(II) and malachite green (MG) from water. XRD, SEM–EDX, FTIR, zeta potential and BET analyses confirmed a porous W‑ZEO/HAP‑NC framework enriched with hydroxyl, phosphate, and silicate groups that supply abundant adsorption sites. Batch experiments showed rapid, pH‑dependent uptake, with equilibrium and kinetic data best described by the Freundlich and pseudo‑second‑order models. Under optimized conditions, W‑ZEO/HAP‑NC achieved Langmuir capacities of 666.7 mg g<sup>− 1</sup> for Cd(II) and 400.0 mg g<sup>− 1</sup> for MG, driven by electrostatic attraction, ion exchange, surface complexation, π–π interactions, and hydrogen bonding. The composite retained 85–95% of its initial efficiency after four adsorption–desorption cycles, underscoring its potential as a high‑capacity, regenerable adsorbent for wastewater purification and waste valorization.</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

Dual functional zeolite/hydroxyapatite nanocomposite for highly effective removal of malachite green dye and cadmium from wastewater

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年6月23日

查看全文
  • Mohamed A. Hassan,
  • Rowaida M. Swify,
  • Nada M. Rizk,
  • Menna T. M. Mohammed,
  • Ganat A. Ragab,
  • Talal B. Almeelbi

摘要

Water scarcity and contamination demand efficient wastewater treatment technologies that are both effective and sustainable. In this study, a waste‑derived zeolite/hydroxyapatite nanocomposite (W‑ZEO/HAP‑NC) was synthesized from rice‑husk‑derived silica and aluminum‑can waste and evaluated for its versatile, dual-functional capacity to remove both Cd(II) and malachite green (MG) from water. XRD, SEM–EDX, FTIR, zeta potential and BET analyses confirmed a porous W‑ZEO/HAP‑NC framework enriched with hydroxyl, phosphate, and silicate groups that supply abundant adsorption sites. Batch experiments showed rapid, pH‑dependent uptake, with equilibrium and kinetic data best described by the Freundlich and pseudo‑second‑order models. Under optimized conditions, W‑ZEO/HAP‑NC achieved Langmuir capacities of 666.7 mg g− 1 for Cd(II) and 400.0 mg g− 1 for MG, driven by electrostatic attraction, ion exchange, surface complexation, π–π interactions, and hydrogen bonding. The composite retained 85–95% of its initial efficiency after four adsorption–desorption cycles, underscoring its potential as a high‑capacity, regenerable adsorbent for wastewater purification and waste valorization.