拉菲金属有机框架的性能和机制作为一种高效的吸附剂,用于从矿井水中去除化物
Chaomin Jia1, Jianbing Wang1, Huijiao Wang1
1School of Chemical & Environmental Engineering, China University of Mining & Technology-Beijing, Beijing 100083, China.
Journal of environmental sciences (China)
|December 17, 2023
概括
一种新的La-Fe@PTA吸附剂有效地从矿井水中去除化物. 这项研究详细介绍了最佳条件,并证明了吸附剂.
科学领域:
- 环境化学环境化学
- 材料科学 材料科学 材料科学
- 水处理 处理水的方法
背景情况:
- 水的化物污染对环境和人类健康构成重大风险.
- 有效的除技术对于处理受污染的水源至关重要.
- 矿井水通常含有高水平的化物,需要进行整治.
研究的目的:
- 合成和评估La-Fe@PTA吸附剂,用于从矿井水中去除化物.
- 通过使用La-Fe@PTA来确定化物吸附的最佳条件.
- 研究吸附剂的吸附机制和再生潜力.
主要方法:
- 合成的La-Fe@PTA吸附剂. 这是一个很好的方法.
- 批量吸附实验以确定最佳条件 (pH,初始化物度,吸附剂剂剂量,接触时间).
- 动力和同热模拟 (伪二次,弗洛伊德利希,兰格穆尔).
- 固定床柱研究,以评估实际应用.
- 吸附剂再生试验. 吸附剂再生试验.
主要成果:
- 在pH值~7.0,10 mg/L初始化物,0.5 g/L剂量和240分钟接触时间下达到最佳脱化.
- 碳酸盐和二碳酸盐离子显著抑制了化物吸附.
- 吸附遵循伪二次动力学和弗洛伊德利希模型,最大的兰迈尔容量为95mg/g.
- 固定床试验有效地将化物从3.6 mg/L降低到<1.5 mg/L在130个床体积内.
- 吸附剂在再生后具有很好的可重复使用性.
结论:
- 拉-Fe@PTA是一种高效的吸附剂,用于从矿井水中去除化物.
- 吸附过程是一种物理化学反应,涉及静电吸引和离子交换.
- 该吸附剂由于其效率和可再生性,在水处理中具有实际应用的巨大潜力.
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