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层次性-多孔气体透膜,实现有效和强大的氨回收

Haoquan Zhang¹, Haiyan Yu¹, Zhan Wang¹

¹Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, School of Environment and Ecology, Chongqing University, Chongqing 400045, PR China.

Environmental science & technology

|December 12, 2025

概括

研究人员开发了一种新型的层次性多孔气体透气膜 (HGPM),以提高废水中的氨回收. 这种HGPM显著提高了氨的透性和膜防湿性,性能优于商业膜.

科学领域:

膜科学与技术膜科学与技术
环境工程环境工程
化学工程是化学工程的重要组成部分.

背景情况:

从废水中回收氨对于资源的再利用和污染控制至关重要.
疏水性气体透膜 (GPMs) 面临的是氨透性和防湿性之间的权衡.
现有的GPM限制了从复杂的废水流中有效地回收氨.

研究的目的:

设计和制造一个层次性多孔GPM (HGPM),克服透性-防水性权衡.
为在HGPM层中建立氨扩散的转移模型.
评估HGPM在实际废水处理中的性能.

主要方法:

简单的制造量身定制的层次性多孔GPM (HGPM).
开发膜传递模型以阐明氨扩散通路.
使用性/酸性液体和真空无氧消化废水对HGPM的实验性评估.
测量质量转移系数,液体入口压力和氨回收流量.

主要成果:

由于分子扩散,HGPM表现出3.3 × 10-5 m/s的优异质量转移系数.
达到高液体入口压力 (182 kPa),表明出色的防湿性.
与商业GPM相比,HGPM显示氨的透性和防湿性增加了150-200%.
强大的氨回收流量75-80gN/m2h从真正的废水,比商业GPM高三倍.

结论:

开发的HGPM有效地平衡了氨的透性和防湿性,打破了以前的性能限制.
这种等级结构促进了有效的氨扩散,并提供了强大的抗湿性.
该HGPM显示了从复杂废水中可扩展和有效地回收有价值的挥发性化合物的显著潜力,为循环经济做出贡献.

关键词:

氨的回收是可以回收的.厌氧消化剂是一种厌氧消化剂.气体透性膜膜可以通过气体透.一个层次性的孔隙结构.模型模型模型模型模型模型

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