来自Camellia oleifera贝的活性炭用于吸附Y:实验和DFT研究
Bin Zeng1,2,3, Xiangrong Zeng1,3, Lianghui Hu3
1Gannan University of Science and Technology Ganzhou 341000 China zengxr986@163.com.
RSC advances
|January 31, 2024
概括
这项研究开发了来自Camellia oleifera果的活性炭,以有效地回收离子. 该材料表现出高吸附能力,为稀土资源管理提供了可持续的解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 环境化学环境化学
- 化学工程是化学工程的重要组成部分.
背景情况:
- (Y) 是一种重要的稀土元素,具有多种工业应用.
- 传统方法难以从稀释溶液中回收离子,导致资源耗尽.
- 吸附是一种有希望的,可持续的回收方法.
研究的目的:
- 从Camellia oleifera果 (COS) 开发一种有效的吸附剂,用于离子 (Y(iii)) 恢复.
- 在COS衍生的活性炭上研究Y的吸附能力和机制.
- 探索可持续稀土资源管理的潜力.
主要方法:
- 使用酸激活,从COS中制备活性炭.
- 批量吸附实验以确定Y(iii) 吸附能力和平衡.
- 动力和同热模型 (Langmuir和伪二次) 阐明吸附机制.
- 密度函数理论 (DFT) 的计算分析了Y(iii) 与活性碳表面的相互作用.
主要成果:
- 由COS衍生的活性炭具有35.41毫克g-1.1的高Y(iii) 吸附能力.
- 吸附遵循兰格穆尔模型和伪二阶动力学,表明化学吸附.
- DFT计算证实了稳定的Y(iii) 通过与碳原子形成化学键的吸附.
- 表面分析显示吸附后存在N,O和Y.
结论:
- 来自COS的活性炭是从稀释溶液中回收Y的高效吸附剂.
- 吸附过程主要是化学的,由Y ((iii) 和活性碳表面之间强烈的相互作用驱动.
- 这种方法为管理稀土资源提供了一种可持续且经济可行的方法.
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