通过磁铁-酸盐复合物对Cu (II) 和Cd (II) 的吸附特性:动力学,热力学和平衡研究
Chao Hu1,2, Zuhong Zheng1,2, Mengyao Huang2
1Hubei Province Research Center of Engineering Technology for Utilization of Botanical Functional Ingredients, Hubei Engineering University, Xiaogan 432000, China.
Polymers
|June 28, 2023
概括
磁铁-酸盐复合物显示出从水中去除铜 (Cu) 和 (Cd) 等重金属的潜力. 优化绿色合成是提高它们吸附能力和可重复使用性的关键.
科学领域:
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
- 绿色化学 绿色化学
背景情况:
- 重金属污染对环境和健康构成重大风险.
- 磁铁-奇托桑复合材料为水资源整治提供了一个可持续的解决方案.
- 绿色合成方法对于开发环保吸附剂至关重要.
研究的目的:
- 分析磁铁 - 色素复合物的结构和吸附性质.
- 评估复合材料在吸附铜 (Cu(II)) 和 (Cd(II)) 重金属中的效率.
- 探索pH值,温度和再生对吸附性能的影响.
主要方法:
- 使用X射线衍射,里埃变换红外光谱和扫描电子显微镜进行表征.
- 静态吸附实验以确定pH的依赖性,同热量,动力学和热力学.
- 对Cu (II) 和Cd (II) 的吸附能力和再生效率的评估.
主要成果:
- 最佳吸附pH值为5.0,在大约10分钟内达到平衡.
- 吸附能力为Cu (II) 达到26.28 mg/g,为Cd (II) 达到18.67 mg/g.
- 复合材料在两次再生后保持了超过80%的容量,在五次再生后保持了约60%的容量.
结论:
- 磁铁 - 基托复合物显示出有效的重金属吸附,可能由基托功能组主导.
- 这项研究强调了绿色合成在优化复合吸附剂方面的潜力.
- 建议对绿色合成进行进一步的研究,以提高重金属去除复合材料的性能.
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