使用普鲁士蓝色生物炭复合物从废水中高度选择性地去除类离子
Hailong Zhang1,2, Xiaoming Ma3, Zhangxin Wang2
1School of Environment and Safety Engineering, North University of China, Taiyuan, 030051, China.
Scientific reports
|September 14, 2024
概括
一种基于生物炭的新型吸附剂 (BC@PB) 有效地从废水中去除有毒的 (Tl +),即使有高度的干扰离子. 这种材料具有很高的选择性和修复能力.
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:
- (Tl+) 是一种高度有毒的污染物,对人类的毒性比其他重金属更大.
- 由于其对环境和健康的风险,有效地从废水中去除是至关重要的.
- 废水中高度的共存离子干扰了选择性去除的过程.
研究的目的:
- 合成一种具有高选择性的吸附剂,用于去除 (Tl+).
- 为了克服废水处理中离子干扰的挑战.
- 开发一种高效的材料,用于塔修复.
主要方法:
- 使用毛孔大小选策略合成普鲁士蓝色浸生物炭 (BC@PB) 颗粒.
- 在高度Na+,Cd2+和Zn2+的情况下测试BC@PB对Tl+的去除效率.
- 评估吸附能力,去除率和在不同pH值范围内的稳定性.
- 使用密度函数理论 (DFT) 计算来理解选择性机制.
主要成果:
- BC@PB去除了超过95%的Tl+,即使同时存在的离子度高出1000倍.
- 在1分钟内达到9365μg/g的高吸附能力和>99%的tl+去除.
- 在pH范围3到9之间,已证明稳定且优异的tl+去除 (>99%).
- DFT计算证实了离子水体积和无水的能量在选择性 Tl + 除去中的作用.
结论:
- 合成的BC@PB颗粒具有很高的选择性和吸附能力来去除.
- 孔隙大小选策略有效地解决了废水中的离子干扰.
- 由于其效率和易于制备,BC@PB是从废水中切实修复的有希望的候选人.
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