{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,2]],"date-time":"2026-07-02T01:19:46Z","timestamp":1782955186556,"version":"3.54.5"},"reference-count":60,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2021,1,12]],"date-time":"2021-01-12T00:00:00Z","timestamp":1610409600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Korea Evaluation Institute of Industrial Technology (KEIT)","award":["KM200098"],"award-info":[{"award-number":["KM200098"]}]},{"DOI":"10.13039\/501100003695","name":"Korea Institute of Industrial Technology","doi-asserted-by":"publisher","award":["EO-20-0022"],"award-info":[{"award-number":["EO-20-0022"]}],"id":[{"id":"10.13039\/501100003695","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJERPH"],"abstract":"<jats:p>Hollow fiber membrane contactors (HFMCs) provide a large specific surface area. Thus, their significantly reduced volume provides an advantage compared to the conventional gas\u2013liquid contactor. In this study, the selective removal efficiency of flue gas, in which sulfur oxide (SO2) and carbon dioxide (CO2) coexist, was measured using a polypropylene (PP) HFMC with such advantages. To increase the selective removal efficiency of SO2, 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.<\/jats:p>","DOI":"10.3390\/ijerph18020597","type":"journal-article","created":{"date-parts":[[2021,1,12]],"date-time":"2021-01-12T14:28:53Z","timestamp":1610461733000},"page":"597","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["Selective Sulfur Dioxide Absorption from Simulated Flue Gas Using Various Aqueous Alkali Solutions in a Polypropylene Hollow Fiber Membrane Contactor: Removal Efficiency and Use of Sulfur Dioxide"],"prefix":"10.3390","volume":"18","author":[{"given":"Hyun Sic","family":"Park","sequence":"first","affiliation":[{"name":"Green Materials &amp; Processes R&amp;D Group, Korea Institute of Industrial Technology, 55 Jongga-ro, Jung-gu, Ulsan 44413, Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dongwoan","family":"Kang","sequence":"additional","affiliation":[{"name":"Green Materials &amp; Processes R&amp;D Group, Korea Institute of Industrial Technology, 55 Jongga-ro, Jung-gu, Ulsan 44413, Korea"},{"name":"Department of Civil and Environmental Engineering, Pusan National University, 2 Busandaehak-ro, 63beon-gil, Geumjeong-gu, Pusan 46241, Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jo Hong","family":"Kang","sequence":"additional","affiliation":[{"name":"Green Materials &amp; Processes R&amp;D Group, Korea Institute of Industrial Technology, 55 Jongga-ro, Jung-gu, Ulsan 44413, Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kwanghwi","family":"Kim","sequence":"additional","affiliation":[{"name":"Green Materials &amp; Processes R&amp;D Group, Korea Institute of Industrial Technology, 55 Jongga-ro, Jung-gu, Ulsan 44413, Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jaehyuk","family":"Kim","sequence":"additional","affiliation":[{"name":"Department of Civil and Environmental Engineering, Pusan National University, 2 Busandaehak-ro, 63beon-gil, Geumjeong-gu, Pusan 46241, Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hojun","family":"Song","sequence":"additional","affiliation":[{"name":"Green Materials &amp; Processes R&amp;D Group, Korea Institute of Industrial Technology, 55 Jongga-ro, Jung-gu, Ulsan 44413, Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2021,1,12]]},"reference":[{"key":"ref_1","unstructured":"International Energy Agency (IEA) (2018). 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