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常见溶解离子对基于Fe0的修复系统的效率的影响

Ran Tao¹, Rui Hu², Willis Gwenzi³

¹Applied Geology, University of Göttingen, Goldschmidtstraße 3, D-37077, Göttingen, Germany.

Journal of environmental management

|March 23, 2024

概括

金属铁 (Fe0) 对于水处理的反应性受到水的显著影响.

科学领域:

环境科学与工程环境科学与工程
材料科学材料科学材料科学
水处理技术水处理技术

背景情况:

金属铁 (Fe0) 由于其还原性质,是水资源整治的一个有前途的材料.
水中各种离子的存在可以显著影响基于Fe0的修复系统的性能.
了解这些离子影响对于优化Fe0应用在各种水矩阵中至关重要.

研究的目的:

研究常见离子 (Cl-, F-, HCO3-, HPO42-, SO42-) 对Fe0.0的反应性的影响.
为了评估Fe0在用甲基蓝 (MB) 和色II (O-II) 作为模型污染物进行水疗的有效性.
为了确定铁腐蚀产品 (FeCPs) 和溶液化学在Fe0性能中的作用.

主要方法:

使用Fe0,沙子和合成水进行了静止批量实验,其离子度各不相同.
使用甲蓝 (MB) 和色II (O-II) 变色来评估Fe0的反应性.
在45天内监测pH值,铁度和FeCP可用性.

主要成果:

二碳酸盐 (HCO3-) 增强了MB变色,表明FeCP可用性增加,而其他离子则抑制了它.
对于O-II,观察到一个对比的效果,HCO3-抑制了其变色.
阳离子通常会延迟FeCP的可用性,根据阳离子的类型和度有很大的差异.

结论:

基于Fe0的水疗的有效性高度依赖于水的特定离子组成.
HCO3-可促进Fe0对某些污染物 (MB) 的反应性,但可能阻碍其他污染物 (O-II).
考虑到水离子化学的特定场所评估对于Fe0在水处理中的成功应用至关重要.

关键词:

无机离子是无机的离子.甲蓝色方法的方法透的反应障碍物是可以透过的.水的整治水的整治.没有价值的铁.

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