用MnO2添加剂的磁珠从水中选择性去除:性能和机制研究
Dirong Gong1, Panpan Yang1, Junyi Zhao2
1Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo, 315211, PR China.
Journal of environmental management
|February 7, 2024
概括
这项研究开发了新型复合珠 (SA/CMC/MnO2/Fe3O4) 以有效地从污染水中去除 (Tl). 吸附剂表现出高容量,优异的特异性和可重复使用性,符合严格的排放标准.
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:
- 由于工业活动,水性 (Tl) 构成了严重的环境威胁.
- 有效地治理受污染的水对环境保护和公共卫生至关重要.
研究的目的:
- 开发和描述用于从水中去除的新型复合珠.
- 评估开发的吸附剂的吸附性能,机制和可重复使用性.
主要方法:
- 制造SA/CMC/MnO2/Fe3O4复合珠子. 这种珠子的制造
- 使用像XPS这样的技术对复合珠子进行表征.
- 实验室规模的实验来评估的吸附能力,动力学和同热度.
- 对常见的危险和天然离子进行吸附剂选择性的评估.
- 在多个循环中测试吸附剂的再生和可重复使用性.
主要成果:
- 在SA/CMC/MnO2/Fe3O4珠子实现了高吸附能力38.8毫克Tl/g珠子.
- 获得了近100%的去除效率,将残留Tl降至0.1μg/L以下,符合中国的排放标准.
- 吸附动力学遵循伪二阶模型,同热量数据符合弗洛伊德利希模型.
- 吸附剂对比其他金属离子具有很好的选择性,包括Cu2+,Cd2+,Co2+,Pb2+,Cr3+,K+和Na+.
- 复合珠子在五个周期内表现出良好的再生和可重复使用性.
结论:
- 这种SA/CMC/MnO2/Fe3O4复合珠是一种高效和选择性的吸附剂,用于去除.
- 该研究阐明了包括氧化还原反应和离子交换在内的吸附机制.
- 这种新型吸附剂在对污染水的实际处理方面显著有前途.
关键词:
吸附剂是一种吸附剂.阿尔金酸盐是一种酸盐.铁 (Fe) (O) (O) (Fe) (O) (O) (O) (O) (O) (O) (O) (O) (O) (O) (O) (O) (O) (O) (O) (O) (O) (O) (O) (O) (O) (O) (O) (O) (O) (O) (O) (O) (O) (O) (O) (O) (O) (O) (O) (O) (O) (O) (O) (O) (O) (O) (O) (O) (O) (O) (O) (O) (O) (O)MnO ((2)) 是一种有氧化物.选择性的选择性Tl的去除 Tl的去除更多相关视频
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