斯特鲁维特结晶过程对使用MgFe层叠双氧化物吸附性去除酸盐的作用
1Faculty of Engineering and Natural Sciences, Department of Chemical Engineering, Süleyman Demirel University, 32260, Isparta, Turkey. azizsencan@sdu.edu.tr.
Scientific reports
|October 13, 2025
概括
这项研究结合了使用MgFe层双氧化物 (LDH) 的吸附与斯特鲁维特结晶,以有效地去除酸盐. 这种双重过程将含的颗粒转化为有价值的 struvite 材料,实现几乎完全的去除.
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:
- 酸盐污染是一个重要的环境问题.
- 吸附性去除酸盐通常需要对加载材料进行进一步处理.
- MgFe层状双氧化物 (LDH) 显示了酸盐吸附的潜力.
研究的目的:
- 调查斯特鲁维特结晶作为酸盐去除的辅助过程.
- 使用MgFe LDH优化酸盐吸附.
- 为了将含有酸盐的颗粒转化为具有附加值的 struvite.
主要方法:
- 在各种条件下 (pH,度,时间,温度) 使用MgFe LDH进行酸盐吸附实验.
- 吸附过程的动力学,异热和热力学分析.
- 用NH4Cl进行吸附后处理,以诱导斯特鲁维特结晶.
- 进行XRD和EDS分析以确认结构岩的形成.
主要成果:
- 确定了最佳的酸盐去除条件:pH 11.0,600 mg P/L初始度,4.0 g吸附剂,90 分钟的接触时间,20°C.
- 吸附之后的斯特鲁维特结晶使剩余从78 mg/L减少到3.8 mg/L.
- XRD和EDS证实了从处理的颗粒中形成 struvite (MgNH4PO4.6H2O).
结论:
- 合并吸附结晶过程对酸盐去除非常有效.
- 斯特鲁维特结晶将含酸盐的LDH转化为环保,增值材料.
- 这种综合方法为废水中酸盐管理提供了可持续的解决方案.
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