用于Cr (VI) 修复的细菌纤维素衍生吸附剂:吸附,溶解和再利用
Uriel Fernando Carreño Sayago1, Vladimir Ballesteros Ballesteros1, Angelica María Lozano Aguilar1
1Faculty of Engineering and Basic Sciences, Fundación Universitaria los Libertadores, Bogotá 111221, Colombia.
Polymers
|September 28, 2024
概括
细菌纤维素生物质有效地从废水中去除有毒的 (VI). 这种环保吸附剂成本低,效率高,可回收,为重金属污染提供可持续的解决方案.
科学领域:
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 工业废水中的重金属污染对环境构成重大风险.
- 开发无毒,具有成本效益和可回收的吸附剂对于水资源整治至关重要.
- 细菌纤维素 (BC) 具有功能组,非常适合通过阴离子交换吸附污染物.
研究的目的:
- 开发和评估细菌纤维素生物质用于吸附,化和再利用在处理六价 (Cr (VI)) 污染的水中.
- 在使用多个周期后评估BC的吸附能力和稳定性.
- 展示一种新的,具有成本效益的工业废水处理方法.
主要方法:
- 对BC生物质的吸附,化和再利用进行实验过程的开发.
- 分析SEM图像以描述材料的特征.
- 使用伪第一和伪二阶模型的动力学研究.
- 在每次重复使用循环后进行同热分析和兰木尔模型适配.
主要成果:
- 细菌纤维素对Cr (VI) 具有很好的吸附能力,在所有化过程中高达225 mg/g.
- 在整个吸附,化和再利用周期中,吸附行为始终遵循兰迈尔模型.
- SEM分析和动力学研究证实了该材料在重复使用后的稳定性和效率.
结论:
- BC生物质是一种高度稳定和高效的吸附剂,用于去除Cr (VI).
- 开发的方法具有成本效益,不需要昂贵的化学剂.
- 这种方法显示出工业废水处理应用的巨大潜力.
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