促进在高湿度环境中通过含甲基功能组的疏水性改性活性炭去除
Qianyu Yang1, Dengtian Li1, Chunyu Wu1
1Key Laboratory of Power Station Energy Transfer Conversion and System, Ministry of Education, North China Electric Power University, Beijing, 102206, China.
Journal of environmental management
|October 30, 2024
概括
疏水性活性炭有效地从烟气中去除,即使在潮湿的条件下. 这种改性材料通过减少水吸附,显著提高了捕获效率.
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:
- 使用活性炭去除烟气中的,因含水量高而受到阻碍.
- 活性炭上的水吸附降低了它捕获 (Hg) 的效率.
研究的目的:
- 开发一种疏水性活性炭,用于增强湿烟气中的吸附.
- 调查疏水性对去除效率和能力的影响.
主要方法:
- 使用六甲基二氧化 (HMDSO) 蒸汽沉积的活性炭的疏水性修饰.
- 测量接触角和水吸附试验,以量化疏水性.
- 在不同湿度下进行去除效率测试.
主要成果:
- 疏水性活性炭 (AC) 的接触角度从42°增加到143°.
- 在95%的相对湿度下,水吸附能力从17.28 mg/g降至3.05 mg/g.
- 移除的效率从58.82%增加到89.60%,在30%的水蒸气含量下修改了AC.
结论:
- 疏水性修改显著提高了活性炭在潮湿的环境中去除的性能.
- 修改AC的降低水吸附率提高了捕获能力和效率.
- 在氧化Hg0中,NO和SO2的协同作用增强了吸附,而NH3的竞争则抑制了吸附.
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