在水中去除原油的伊米达酸框架材料:机制洞察力
Otoniel Anacleto Estrela Filho1, Bryan Fernando Rivadeneira-Mendoza2, Kevin Jhon Fernández-Andrade3
1Programa de Pós-Graduação em Engenharia Química, Universidade Federal da Paraíba, Cidade Universitária, 58051-900, João Pessoa, Brazil.
Environmental research
|November 19, 2023
概括
伊米达酸框架-8 (ZIF-8) 有效地从生产的水中去除原油. 这种吸附剂显示出高容量和自发的外热物理吸附过程,为石油工业废水处理提供了一个有前途的解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 石油开采产生的水含有有害成分,对环境构成风险.
- 有效的处理方法对于减轻石油工业废水对生态的影响至关重要.
研究的目的:
- 调查伊米达酸框架-8 (ZIF-8) 的吸附能力,用于从合成产水中去除原油.
- 了解影响ZIF-8在油吸附系统中的性能因素.
主要方法:
- 通过溶热方法合成ZIF-8并使用XRD,FTIR,TGA和BET进行表征.
- 确定ZIF-8的零电荷点 (pHpcz).
- 在有限浴系统中进行吸附实验,分析Sips和粒子内部扩散模型的数据.
主要成果:
- 合成的ZIF-8表现出高结晶度,表面积为1558 m2g-1,热稳定性高达400°C.
- 吸附遵循Sips模型,表明异质系统,并在粒子内部扩散中显示多线性.
- 热力学研究证实了自发的,外热物理吸收过程,油脂吸附能力为452.9毫克g-1.1.
结论:
- 由于其高吸附能力和有利的吸附特性,ZIF-8显示出了从生产水中去除原油的优秀潜力.
- 吸附机制涉及ZIF-8和石油碳化合物之间的协同性疏水和静电相互作用.
- ZIF-8提供了一个可行的和高效的解决方案,用于处理污染了石油的废水,有助于环境保护.
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