/对泽奥利特-托伯莫里特的影响:营养释放和沉积物稳定性
Yanfei Tian1, Xianshu Dong1, Chunsheng Deng2
1Department of Mineral Processing Engineering, Taiyuan University of Technology, Taiyuan, 030024, China; Shanxi Engineering Research Center of Ecological Mining, Taiyuan, 030024, China.
Environmental pollution (Barking, Essex : 1987)
|January 25, 2025
概括
高灰度的煤炭粘液被转化为以岩/多伯莫里特复合物 (Z-TOBs),用于可持续农业. 这些Z-TOB提供持续的营养释放,并有效吸附和,显示土壤修复和资源利用的希望.
科学领域:
- 材料科学 材料科学 材料科学
- 环境化学环境化学
- 土壤科学 土壤科学
背景情况:
- 高灰煤污泥带来了大量的废物处理挑战.
- 开发用于全面利用的方法对于可持续发展至关重要.
- 煤泥复合材料显示出营养释放和重金属吸附的潜力.
研究的目的:
- 在温和的热水条件下,从高灰煤泥中制备热/热复合物 (Z-TOBs).
- 研究Z-TOBs中,和营养素的持续释放特性.
- 评估Z-TOBs对 (Pb) 和 (Cd) 的吸附性能,并了解其被动化机制.
主要方法:
- 温和的热水合成 (200°C) 用于制备Z-TOBs.
- 批量吸附和重复提取试验,以评估营养释放和重金属吸附.
- 温度梯度分析,水土界面实验和密度函数理论 (DFT) 计算用于机制研究.
主要成果:
- Z-TOBs表现出持续释放的,和,受温度和重金属度的影响.
- Z-TOBs有效地吸附了Pb和Cd,对Pb的吸附能力高于Cd.
- DFT的计算证实了与Pb和Cd形成的含化合物的稳定性,表明有效的被动化.
结论:
- 来自高灰煤污泥的Z-TOB是有效的营养供应和重金属修复在土壤中.
- 该研究为可持续利用煤炭粘液提供了实践和理论见解.
- 这种方法为开发用于农业和环境管理的环保材料提供了一条途径.
相关概念视频
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Compared with pure water, the solubility of an ionic compound is less in aqueous solutions containing a common ion (one also produced by dissolution of the ionic compound). This is an example of a phenomenon known as the common ion effect, which is a consequence of the law of mass action that may be explained using Le Chȃtelier’s principle. Consider the dissolution of silver iodide:
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Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...
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