Green Materials & Processes R&D Group, Korea Institute of Industrial Technology, 55 Jongga-ro, Jung-gu, Ulsan 44413, Korea.
Department of Civil and Environmental Engineering, Pusan National University, 2 Busandaehak-ro, 63beon-gil, Geumjeong-gu, Pusan 46241, Korea.
Int J Environ Res Public Health. 2021 Jan 12;18(2):597. doi: 10.3390/ijerph18020597.
Hollow fiber membrane contactors (HFMCs) provide a large specific surface area. Thus, their significantly reduced volume provides an advantage compared to the conventional gas-liquid contactor. In this study, the selective removal efficiency of flue gas, in which sulfur oxide (SO) and carbon dioxide (CO) coexist, was measured using a polypropylene (PP) HFMC with such advantages. To increase the selective removal efficiency of SO, experiments were conducted using various alkaline absorbents. As a result, with 0.05 M ammonia solution, the removal efficiency of 95% or more was exhibited with continuous operation for 100 h or more. We confirmed that the absorbent saturated by the once-through mode was aqueous ammonium sulfate ((NH₄)₂SO₄) solution and could be used as a fertilizer without additional processing.
中空纤维膜接触器（HFMC）提供了很大的比表面积。因此，与传统的气液接触器相比，其显著减小的体积具有优势。在这项研究中，使用具有这种优势的聚丙烯（PP）HFMC 测量了共存的硫氧化物（SO）和二氧化碳（CO）的烟道气的选择性去除效率。为了提高 SO 的选择性去除效率，使用各种碱性吸收剂进行了实验。结果，使用 0.05 M 氨水溶液，在连续运行 100 小时以上的情况下，可实现 95%或更高的去除效率。我们证实，通过一次通过模式饱和的吸收剂是硫酸铵水溶液（(NH₄)₂SO₄），无需进一步处理即可用作肥料。
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