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Updated: Jun 25, 2025

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Electrochemically and Bioelectrochemically Induced Ammonium Recovery
Published on: January 22, 2015
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超膜化学吸收过程,用于回收氨作为有机肥,使用酸作为捕获溶液
Ricardo Reyes Alva1, Marius Mohr2, Susanne Zibek1,2
1Institute of Interfacial Process Engineering and Plasma Technology (IGVP), University of Stuttgart, Pfaffenwaldring 31, 70569 Stuttgart, Germany.
Membranes
|May 24, 2024
概括
酸显示出作为使用膜接触器回收氨的捕获溶液的潜力,尽管效率低于硫酸. 它为这种环境应用提供了减少的水蒸气传输和较低的运营成本.
科学领域:
- 环境工程 环境工程
- 化学工程是化学工程的重要组成部分.
- 分离过程 分离过程.
背景情况:
- 膜接触器通过跨膜化学吸收 (TMCA) 促进氨的去除.
- 强烈的无机酸,如硫酸,通常用作TMCA的捕获溶液.
- 从废水中回收氨对于环境保护和资源利用至关重要.
研究的目的:
- 为了评估酸作为一种从无氧消化器中回收氨的捕获溶液,使用TMCA来评估酸.
- 为了比较酸与硫酸在液体-液体膜接触器配置中的性能.
- 评估温度和pH值对氨回收效率和运营成本的影响.
主要方法:
- 实验室规模的实验使用液态液态配置的膜接触器.
- 在不同温度 (22°C,40°C) 和料水pH值 (10,10.5) 下测试酸和硫酸作为捕获溶液.
- 量化氨的回收率和水蒸气的运输.
主要成果:
- 与硫酸相比,酸的氨回收率较低 (10.7-16.5pp在pH10下,5-10pp在pH10.5下).
- 水蒸气传输在酸下始终较低,在pH10和40°C下是5.7倍低.
- 估计的运营成本有利于酸,但在研究条件下,任何一种酸都不能产生利的过程.
结论:
- 酸是TMCA中氨回收的可行的替代捕获解决方案,可减少水蒸气的运输.
- 虽然酸在捕获氨的效率低于硫酸,但酸在扩大规模方面具有潜在的经济优势.
- 需要进一步优化,以提高从无氧消化器废水中回收氨的工艺利能力.
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