用碳酸加载的半孔SBA-15纳米复合材料的合成,用于从溶液中去除酸盐
Yaoyu Tang1, Hao Wang1,2, Wu Sun1
1School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, China.
概括
含碳酸的中孔 SBA-15 纳米复合材料有效地从水中去除高酸盐度. 优化的CaAS-0.55吸附剂具有92.0 mg·g-1的高容量,为废水处理提供了一个环保的解决方案.
科学领域:
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
- 化学 化学 化学
背景情况:
- 来自肥料的酸盐污染严重恶化了水体.
- 有效的酸盐去除对于生态保护至关重要.
- 对于高效的修复,需要新的吸附剂.
研究的目的:
- 为了合成和表征含碳酸的半孔SBA-15纳米复合材料 (CaAS-x) 用于酸盐吸附.
- 为了研究Ca:Si摩尔比对吸附性能的影响.
- 评估CaAS-0.55作为高度酸盐去除吸附剂的潜力.
主要方法:
- 通过湿浸制造CaAS-x纳米复合物的制造.
- 使用XRD,N2物理吸收,TG-MS,XPS和FT-IR进行表征.
- 酸盐吸附/脱附批量测试以确定效率和容量.
主要成果:
- 增加的Ca:Si摩尔比增加了酸盐去除能力.
- 在酸盐度大于200mgL-1.1的情况下,CaAS-0.55具有高吸附能力,为92.0 mg·g−1.
- CaAS-0.55显示出比原始CaCO3更快的酸盐去除率,这是由于中孔性SBA-15促进了CaCO3的分散和化学吸附.
结论:
- 半孔CaAS-0.55纳米复合材料是一种有效且环保的吸附剂.
- 该材料适用于从中性废水中去除高度的酸盐.
- 这项研究强调了纳米复合材料在先进净化水的潜力.
相关概念视频
Factors Affecting Solubility
33.6K
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:
33.6K
Hydration of Cement
295
Hydration of cement is a chemical reaction between cement particles and water. This process occurs primarily through two mechanisms: through-solution and topochemical. In the through-solution process, anhydrous compounds dissolve into their constituents, hydrates form in the solution, and then precipitate from the supersaturated solution. The topochemical process involves solid-state reactions at the cement particle surface. The through-solution process dominates the topochemical process at the...
295


