树树皮生物炭/ZnAl-LDH的制备及其对酸盐和回收的吸附性能
Lihui Zhang1, Chen Zhang2, Caoyang Zhang2
1School of Chemistry and Environment Engineering, Pingdingshan University, 467000, Pingdingshan, China. 15290759930@139.com.
Scientific reports
|September 1, 2025
概括
这项研究从平坦树皮中开发了ZnAl-LDH修饰生物炭,以加强从水中去除. 修改后的生物炭具有93%的酸盐吸附率,为净化水提供了有前途的解决方案.
科学领域:
- 环境科学
- 材料科学
- 化学学
背景情况:
- 生物炭有效吸附有机污染物,但对无机的去除效果有限.
- 开发高效的吸剂对于水质管理和优化控制至关重要.
研究的目的:
- 通过修改 ZnAl-LDH 来增强生物炭的去除能力.
- 研究修饰生物炭对酸盐 (PO4^3-) 的吸附性能和机制.
主要方法:
- 使用K2CO3作为激活剂制备了平面树皮生物炭.
- 通过使用氨在现场的共同沉,将-层双化物 (ZnAl-LDH) 合成到生物炭上.
- 进行酸盐吸附实验以评估材料的效率和容量.
主要成果:
- 经过ZnAl-LDH修饰的生物炭在度为20 mg/L时显示了约93%的高吸附率.
- 酸盐的和吸附能力确定为103.1 mg/g,表明单层吸附.
- 使用5. 5%的Na2CO3溶液进行酸盐脱吸,几乎可以回收60%的吸附酸盐,这表明有可能重复使用.
结论:
- ZnAl-LDH修饰显著提高了生物炭的吸附性能.
- 吸附机制涉及层间离子交换,表面复合和连接物交换.
- 开发的材料显示了从水体中有效去除和回收酸盐的潜力.
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