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

Park, Hyun Sic; Kang, Dongwoan; Kang, Jo Hong; Kim, Kwanghwi; Kim, Jaehyuk; Song, Hojun

doi:10.3390/ijerph18020597

Open AccessArticle

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

by

Hyun Sic Park

^1,†,

Dongwoan Kang

^1,2,†,

Jo Hong Kang

¹,

Kwanghwi Kim

¹,

Jaehyuk Kim

² and

Hojun Song

^1,*

¹

Green Materials & Processes R&D Group, Korea Institute of Industrial Technology, 55 Jongga-ro, Jung-gu, Ulsan 44413, Korea

²

Department of Civil and Environmental Engineering, Pusan National University, 2 Busandaehak-ro, 63beon-gil, Geumjeong-gu, Pusan 46241, Korea

^*

Author to whom correspondence should be addressed.

^†

These authors contributed equally to this work.

Int. J. Environ. Res. Public Health 2021, 18(2), 597; https://doi.org/10.3390/ijerph18020597

Submission received: 5 December 2020 / Revised: 4 January 2021 / Accepted: 6 January 2021 / Published: 12 January 2021

(This article belongs to the Special Issue Environmental Waste Recycling)

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Abstract

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 (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.

Keywords: desulfurization; hollow fiber membrane contactor (HFMC); polypropylene (PP); sulfur oxide (SO₂); ammonium sulfate ((NH₄)₂SO₄); once-through mode

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MDPI and ACS Style

Park, H.S.; Kang, D.; Kang, J.H.; Kim, K.; Kim, J.; Song, H. 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. Int. J. Environ. Res. Public Health 2021, 18, 597. https://doi.org/10.3390/ijerph18020597

AMA Style

Park HS, Kang D, Kang JH, Kim K, Kim J, Song H. 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. International Journal of Environmental Research and Public Health. 2021; 18(2):597. https://doi.org/10.3390/ijerph18020597

Chicago/Turabian Style

Park, Hyun Sic, Dongwoan Kang, Jo Hong Kang, Kwanghwi Kim, Jaehyuk Kim, and Hojun Song. 2021. "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" International Journal of Environmental Research and Public Health 18, no. 2: 597. https://doi.org/10.3390/ijerph18020597

APA Style

Park, H. S., Kang, D., Kang, J. H., Kim, K., Kim, J., & Song, H. (2021). 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. International Journal of Environmental Research and Public Health, 18(2), 597. https://doi.org/10.3390/ijerph18020597

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

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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

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