多层双氧化物加载松生物炭作为重金属和离子从水中去除重金属的吸附剂
Wei-Hao Huang1, Ying-Ju Chang1, Duu-Jong Lee2
1Department of Chemical Engineering, National Taiwan University, Taipei, Taiwan.
Bioresource technology
|November 6, 2023
概括
经过修改的松生物炭与层状双氧化物 (LDH) 显著增加重金属和酸盐从水中吸附. 这种新型材料提供了增强的净水解决方案.
科学领域:
- 环境科学 环境科学
- 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:
- 来自松的生物炭具有适度的重金属 (Cu2+,Co2+,Pb2+) 和酸盐吸附能力.
- 传统的吸附剂往往缺乏为全面的水处理所需的效率和特异性.
研究的目的:
- 提高松生物炭对重金属和酸盐离子的吸附能力.
- 研究分层双氧化物 (LDH) 修改对生物炭性能的协同效应.
- 为了阐明由LDH层促进的吸附机制.
主要方法:
- 松生物炭被合成,随后用层状双氧化物 (LDH) 进行修改.
- 进行了吸附实验,以评估未修改和LDH修改生物炭对Cu2+,Co2+,Pb2+和酸盐离子的容量.
- 分析了吸附机制,包括离子交换,表面沉和表面复杂化.
主要成果:
- 经LDH修饰的生物炭具有显著增强的吸附能力:Pb2+ (135.9 mg/g) 和 (160.8 mg/g).
- 2+和2+的吸附能力也增加到分别为30.6 mg/g和28.0 mg/g.
- 这种LDH修改促进了各种吸附机制,包括Pb2+的离子交换,酸盐的表面沉以及Cu2+和Co2+的表面复合.
结论:
- LDH修饰是一种高度有效的策略,可以增强生物炭从水溶液中去除重金属和酸盐的能力.
- 集成的LDH层提供了多个吸附点和机制,导致优质的污染物去除.
- 这种先进的吸附剂对开发高效和可持续的净水技术具有前景.
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