Scholarlink

<p>This study used kelp to create biochar (BC) and then modified it with iron-doped zinc oxide (nFe–ZnO) to prepare Fe–ZnO@BC. Under optimal conditions, the adsorption capacity of Fe–ZnO@BC for U(VI) was 146.16&#xa0;mg&#xa0;g<sup>−1</sup>. Freundlich isotherm and quasi-second order kinetic model exhibited excellent fitting to the isotherm and kinetics of uranium adsorption by Fe–ZnO@BC, respectively. The thermodynamic analysis indicated that the U(VI) adsorption process was endothermic and spontaneous. After six adsorption cycles, Fe–ZnO@BC retained its remarkable U(VI) removal performance. Advanced characterization techniques suggested that the main mechanism involved surface adsorption and reduction. These findings imply that Fe–ZnO@BC is a viable adsorbent for wastewater cleanup involving uranium contamination.</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

Effects and mechanism of U(VI) removal by waste kelp biochar loaded with iron-doped zinc oxide (nFe–ZnO) nanoparticles

  • 期刊论文

  • 发表日期：

    2025年3月7日

查看全文
  • Qiqi Deng,
  • Mingjuan Zhang,
  • Taotao Zeng,
  • Guohua Wang,
  • Yusong Fu,
  • Zhi Wang,
  • Zhiyu Xiong,
  • Shuibo Xie

摘要

This study used kelp to create biochar (BC) and then modified it with iron-doped zinc oxide (nFe–ZnO) to prepare Fe–ZnO@BC. Under optimal conditions, the adsorption capacity of Fe–ZnO@BC for U(VI) was 146.16 mg g−1. Freundlich isotherm and quasi-second order kinetic model exhibited excellent fitting to the isotherm and kinetics of uranium adsorption by Fe–ZnO@BC, respectively. The thermodynamic analysis indicated that the U(VI) adsorption process was endothermic and spontaneous. After six adsorption cycles, Fe–ZnO@BC retained its remarkable U(VI) removal performance. Advanced characterization techniques suggested that the main mechanism involved surface adsorption and reduction. These findings imply that Fe–ZnO@BC is a viable adsorbent for wastewater cleanup involving uranium contamination.