功能化循环德克斯/甲纤维素复合水凝,具有双网结构,用于废水中重金属离子的吸附
Hong Zhang1, Xiaodong Yang1, Xin Zhang1
1Jilin Provincial Key Laboratory of Straw-Based Functional Materials, Institute for Interdisciplinary Biomass Functional Materials Studies, Jilin Engineering Normal University, Changchun 130052, China.
Molecules (Basel, Switzerland)
|November 27, 2024
概括
这项研究介绍了一种新型的水凝吸附剂,用于从废水中去除重金属离子. 合成的β-环氧 (CD) 和碳氧甲基纤维素 (CMC) 水凝有效捕获铜,和离子,具有高容量.
科学领域:
- 材料科学 材料科学 材料科学
- 环境化学环境化学
- 聚合物科学 聚合物科学
背景情况:
- 工业废水经常含有有毒的重金属离子,造成严重的环境风险.
- 有效地去除铜 (Cu2+), (Pb2+) 和 (Cd2+) 等重金属对于生态保护至关重要.
研究的目的:
- 为了合成和表征一种新型的双网水凝,用于高效的重金属离子吸附.
- 评估水凝对目标金属离子的吸附性能,选择性和动力学.
主要方法:
- 通过β-环极德 (CD),碳氧甲基纤维素 (CMC) 和酸 (AA) 的基性聚合合成水凝.
- 使用FTIR-ATR,XRD,SEM和TGA进行表征.
- 吸附研究研究金属离子度,接触时间和pH效应.
主要成果:
- CD/CMC-PAA-MBA水凝显示出高吸附能力:Cu2+的吸附能力为158.12 mg/g,Pb2+的吸附能力为393.56 mg/g,Cd2+的吸附能力为290.12 mg/g.
- 在混合重金属离子溶液中,水凝对Pb2+具有优越的选择性.
- 吸附动力学遵循伪二阶模型,平衡数据符合兰格穆尔等热法.
结论:
- 合成的双网水凝是一种高效和选择性的吸附剂,用于从水溶液中去除Cu2+,Pb2+和Cd2+.
- 该材料对工业废水处理中的实际应用具有前景.
- 通过动态和异热模拟了解吸附机制是优化去除过程的关键.
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