使用Mn-Al-La氧化物从污染的饮用水中吸附去除化物
Yilei Deng1, Shuyue Wang1, Kun Shi1
1College of Environmental Science and Engineering, Yangzhou University, Yangzhou Jiangsu, 225127, People's Republic of China.
Environmental science and pollution research international
|December 29, 2023
概括
一种新的-- (MAL) 氧化物有效地从饮用水中去除化物. 这种三金属氧化物具有很高的吸附能力和稳定性,使其成为水处理应用的有希望的材料.
科学领域:
- 环境化学环境化学
- 材料科学 材料科学 材料科学
- 水处理技术水处理技术
背景情况:
- 饮用水中的化物污染对健康构成重大风险.
- 开发高效且具有成本效益的吸附剂对于净化水非常重要.
- 三金属氧化物正在成为污染物清除的有希望的材料.
研究的目的:
- 为了合成和表征一种新型的-- (MAL) 氧化物.
- 为了评估MAL氧化物在水溶液和模拟地下水中的化物吸附性能.
- 研究MAL氧化物吸附剂的吸附机制和稳定性.
主要方法:
- 合成MAL氧化物,其分子比为2:1:1.
- 使用XRD,FTIR,XPS和TEM进行表征.
- 在各种条件下 (pH,温度,共存的离子) 进行批量和列吸附实验.
- 动力和同热模拟 (伪二阶,兰格穆尔,弗罗恩德利希).
主要成果:
- 马尔氧化物表现出BET表面积为52 m2/g和类似棉花的形态.
- 吸附数据很适合伪二阶,兰迈尔和弗罗恩德利希模型.
- 最大吸附能力在45-113毫克/克之间.
- 在pH范围3-9的范围内有效地去除化物,H2PO4−的抑制较小.
- 吸附剂在三次循环后保持了73%的容量.
结论:
- 马尔氧化物是一种高效的吸附剂,用于从饮用水中去除化物.
- 吸附机制涉及静电相互作用和连接体交换.
- 马尔氧化物表现出良好的稳定性和在地下水处理中实际应用的潜力.
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