固定床吸附Pb (ii) 和Cu (ii) 从多金属水系统到纤维素-g-基亚帕颗粒上:使用响应表面方法的优化
Salah Eddine Marrane1, Karim Dânoun2,3, Youness Essamlali2,3
1Laboratory of Materials, Catalysis & Valorization of Natural Resources, Hassan II University FST-Mohammedia Morocco m.zahouily@mascir.ma.
RSC advances
|November 3, 2023
概括
纤维素微纤维素-g-hydroxyapatite颗粒有效地从水中去除和铜. 这种可重复使用的材料对大规模的废水处理应用非常有前途.
科学领域:
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 水溶液中的重金属污染对环境和健康构成重大风险.
- 开发高效和可持续的吸附剂对于有效的水资源整治至关重要.
研究的目的:
- 为了合成和评估用于重金属去除的纤维素微纤维素-g-酸 (CMFs-g-HAPN) 颗粒.
- 为了优化吸附参数,并评估吸附剂在动态模式中的性能.
主要方法:
- 颗粒状CMFs-g-HAPN在固定床吸附柱中准备和测试.
- 使用Doehlert设计的响应表面方法 (RSM) 用于参数优化.
- 应用了动力模型 (亚当斯-博哈特,托马斯,尤恩-尼尔森) 来分析吸附数据.
主要成果:
- 吸附遵循一个二次多项式模型,具有高的确定系数 (R2=0.976对于Pb(ii),R2=0.990对于Cu(ii)).
- 托马斯和尤恩-尼尔森模型准确地描述了突破曲线.
- 吸附剂对比具有很高的选择性,最大容量为59.59毫克g-1 () 和35.66毫克g-1 ().
结论:
- CMFs-g-HAPN颗粒是有效的,可重复使用的吸附剂,用于Pb (ii) 和Cu (ii) 的去除.
- 优化过程显示出大规模工业废水处理的潜力.
- 吸附剂可以再生和重复使用至少四个周期.
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