Scholarlink

<p>To effectively remove lead (Pb(II)) and bisphenol A (BPA) from wastewater, polyvinyl chloride modified magnetic hydrochar (PVC-AMHC) was synthesized through co-hydrothermal carbonization of polyvinyl chloride and corn straw, and subsequently activated using NaOH. Characterization demonstrated that both PVC and NaOH activation increased the content of oxygen-containing functional groups, and Fe<sub>3</sub>O<sub>4</sub> was successfully loaded onto the material surface. Furthermore, PVC-AMHC displayed remarkable uptake capacity with the maximum uptake amount of Pb(II) (217.53&#xa0;mg/g) and BPA (185.53&#xa0;mg/g) at 130 and 30&#xa0;min, respectively, under a wide pH range. Additionally, PVC-AMHC possessed high tolerance to different interference cations and maintained excellent adsorption performance during four regeneration cycles. The thermodynamic analysis suggested that the absorption processes of Pb(II) and BPA by PVC-MHC were spontaneous (-Δ<i>G</i><sup>0</sup>) with an endothermic characteristic (+Δ<i>H</i><sup>0</sup>). Adsorption mechanisms of Pb(II) on PVC-AMHC included complexation, electrostatic attraction, and pore filling, and those of BPA were mainly associated with hydrogen bonding and pore filling. In conclusion, PVC-AMHC was an environmentally friendly adsorbent with effectively simultaneous removal of Pb(II) and BPA from wastewater.</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 of polyvinyl chloride modified magnetic hydrochar for effective removal of Pb(II) and bisphenol A from aqueous phase: performance and mechanism exploration

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年1月26日

查看全文
  • Fuxuan Bi,
  • Bo Zhang,
  • Xiaoyang Liu,
  • Mingyao Ma,
  • Qi Hu,
  • Mengning Wang,
  • Lei Wang,
  • Jianhua Qu,
  • Ying Zhang

摘要

To effectively remove lead (Pb(II)) and bisphenol A (BPA) from wastewater, polyvinyl chloride modified magnetic hydrochar (PVC-AMHC) was synthesized through co-hydrothermal carbonization of polyvinyl chloride and corn straw, and subsequently activated using NaOH. Characterization demonstrated that both PVC and NaOH activation increased the content of oxygen-containing functional groups, and Fe3O4 was successfully loaded onto the material surface. Furthermore, PVC-AMHC displayed remarkable uptake capacity with the maximum uptake amount of Pb(II) (217.53 mg/g) and BPA (185.53 mg/g) at 130 and 30 min, respectively, under a wide pH range. Additionally, PVC-AMHC possessed high tolerance to different interference cations and maintained excellent adsorption performance during four regeneration cycles. The thermodynamic analysis suggested that the absorption processes of Pb(II) and BPA by PVC-MHC were spontaneous (-ΔG0) with an endothermic characteristic (+ΔH0). Adsorption mechanisms of Pb(II) on PVC-AMHC included complexation, electrostatic attraction, and pore filling, and those of BPA were mainly associated with hydrogen bonding and pore filling. In conclusion, PVC-AMHC was an environmentally friendly adsorbent with effectively simultaneous removal of Pb(II) and BPA from wastewater.

Graphical Abstract