在水溶液中高效丰富 (VI),使用-层双化合物酸盐改性热水生物炭:机制和吸附
Xinchen Chen1, Jingyu Zhong1, Huanyue Lin1
1Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-sen University, Zhuhai 519082, Guangdong, China.
Chemosphere
|June 21, 2024
概括
一种新型的酸盐修饰生物炭复合物有效地从水中去除U (VI). 这种可持续材料具有很高的吸附能力和稳定性,为污染废水处理提供了一个有前途的解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 环境化学环境化学
- 纳米技术 纳米技术
背景情况:
- 水溶液中的 (U(VI)) 污染对环境和健康构成重大风险.
- 传统的U(VI) 去除方法往往耗费大量能源或效率低下.
- 开发可持续和高效的吸附剂对于环境修复至关重要.
研究的目的:
- 为了合成一种新的-分层双氧化物复合物,酸盐修饰的热水生物炭.
- 为了评估其在从水溶液中去除U ((VI) 的效率.
- 阐明吸附机制,评估材料的稳定性和可重复使用性.
主要方法:
- 使用酸盐热聚合-热水法,从竹子废物中制造出改性生物炭.
- 溶剂热聚合和水热工艺相结合,可以有效地加载层叠双氧化物 (LDH) 组件.
- 进行了物理化学分析 (XPS,FTIR) 和吸附实验,以表征材料并评估U(VI) 的去除.
主要成果:
- 复合生物炭表现出高表面积和丰富的含氧功能组.
- 在80分钟内达到吸附平衡,遵循伪二阶动力学和兰格穆尔模型.
- 在pH4和298K下达到388.81mgg-1的最大吸附能力.
- 吸附机制涉及化和共同沉.
- 该材料在5个吸附-脱附周期后保持了75.46%的去除效率.
结论:
- 和分层的双氧化物复合物改性热水生物炭是一种高效和稳定的吸附剂,用于U(VI) 清除.
- 可持续的合成方法和卓越的性能凸显了其在处理含有的废水方面的潜力.
- 该材料为废水整治提供了显著的环境和经济效益.
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