基于烧焦的酸盐污泥和甲高的活性地质聚合物
Oumaima Karoui1,2, Slavka Andrejkovičová3, Pedro Pato3
1Faculty of Sciences of Tunis, University of Tunis El Manar, 2092, Tunis, Tunisia. omaima.karoui@fst.utm.tn.
概括
地质聚合有效地固定了突尼斯酸盐污泥中的重金属,提供了一个可持续的解决方案. 这一过程产生了具有环境应用的有前途的物理和机械性能的耐用材料.
科学领域:
- 材料科学 材料科学 材料科学
- 环境工程 环境工程
- 地质化学 地质化学
背景情况:
- 突尼斯矿石矿石开采中的酸盐污泥,由于重金属的泄,造成环境风险.
- 地质聚合提供了一种潜在的方法来固定危险废物材料.
- 在地聚合物合成中利用酸盐污泥等工业副产品,促进循环经济原则.
研究的目的:
- 调查使用突尼斯化酸盐污泥 (Cal-PS1和Cal-PS2) 作为地质聚合物合成中甲的部分替代品的可行性.
- 描述和比较产生的地质聚合物的物理和机械性能.
- 评估开发的地质聚合物的重金属固定能力.
主要方法:
- 地质聚合工艺采用活性化金属替换为两种类型的化酸盐污泥 (Cal-PS1,Cal-PS2).
- 替代比率的优化,使用20%的化酸盐污泥被认为是最佳的.
- 压力强度,特定表面积,弹性模量和浸出测试在固化和浸水的地质聚合物样本上进行.
主要成果:
- 最佳的地质聚合物配方在28天后达到37 MPa (Cal-PS1) 和28 MPa (Cal-PS2) 的压力强度.
- 地质聚合物样本呈现出半孔结构,其特定表面积在16.318.73 m2/g之间.
- 漂水试验证实有效制大多数重金属,只观察到轻微的漂水.
结论:
- 使用突尼斯化酸盐污泥进行地质聚合是生产具有显著压力强度的材料的可行方法.
- 开发的地质聚合物显示出有效的重金属固定,减轻与酸盐污泥相关的环境风险.
- 这些发现突显了在地质聚合物应用中利用酸盐污泥的潜力,以实现可持续的废物管理和材料生产.
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