Harmless Treatment of Sulfuryl Fluoride by Chemical Absorption

Yong Nie; Xiaojiang Liang; Jianbing Ji; Meizhen Lu; Fengwen Yu; Dayong Gu; Qinglong Xie; Min Min

doi:10.1089/ees.2015.0021

Harmless Treatment of Sulfuryl Fluoride by Chemical Absorption

Yong Nie, Xiaojiang Liang, Jianbing Ji, Meizhen Lu, Fengwen Yu, Dayong Gu, Qinglong Xie, Min Min

Bioproducts and Biosystems Engineering

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

Chemical absorption was employed for the harmless treatment of sulfuryl fluoride (SO₂F₂) in the simulated residual fumigant. SO₂F₂ was absorbed by sodium hydroxide (NaOH) solution in a packed column. Effects of spray density, gas flow rate, concentration of NaOH solution, and inlet SO₂F₂ volume concentration on SO₂F₂ removal efficiency were investigated at room temperature. It was found that SO₂F₂ could be removed completely when inlet SO₂F₂ volume concentration, spray density, gas flow rate, and NaOH concentration were 0.50%, 12 m³/(m² · h), 0.12 m³/h, and 0.68 mol/L, respectively. According to the two-film theory, a mathematical model based on Onda correlations was developed to describe the removal efficiency of SO₂F₂. Comparison between the experimental data and the calculated data proved that the predictability of the proposed model was within the maximum deviation of 8.0%. Aqueous NaOH solution after absorption was analyzed. It was found that the SO₂F₂ was fixed and converted to NaF, NaSO₃F, and Na₂SO₄.

Original language	English (US)
Pages (from-to)	789-795
Number of pages	7
Journal	Environmental Engineering Science
Volume	32
Issue number	9
DOIs	https://doi.org/10.1089/ees.2015.0021
State	Published - Sep 1 2015

Bibliographical note

Publisher Copyright:
Copyright © 2015, Mary Ann Liebert, Inc.

Keywords

absorption
air pollution control processes
air toxics
chemical absorption
emissions
harmless treatment
model
sodium hydroxide
sulfuryl fluoride

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title = "Harmless Treatment of Sulfuryl Fluoride by Chemical Absorption",

abstract = "Chemical absorption was employed for the harmless treatment of sulfuryl fluoride (SO2F2) in the simulated residual fumigant. SO2F2 was absorbed by sodium hydroxide (NaOH) solution in a packed column. Effects of spray density, gas flow rate, concentration of NaOH solution, and inlet SO2F2 volume concentration on SO2F2 removal efficiency were investigated at room temperature. It was found that SO2F2 could be removed completely when inlet SO2F2 volume concentration, spray density, gas flow rate, and NaOH concentration were 0.50%, 12 m3/(m2 · h), 0.12 m3/h, and 0.68 mol/L, respectively. According to the two-film theory, a mathematical model based on Onda correlations was developed to describe the removal efficiency of SO2F2. Comparison between the experimental data and the calculated data proved that the predictability of the proposed model was within the maximum deviation of 8.0%. Aqueous NaOH solution after absorption was analyzed. It was found that the SO2F2 was fixed and converted to NaF, NaSO3F, and Na2SO4.",

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author = "Yong Nie and Xiaojiang Liang and Jianbing Ji and Meizhen Lu and Fengwen Yu and Dayong Gu and Qinglong Xie and Min Min",

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AU - Nie, Yong

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AU - Ji, Jianbing

AU - Lu, Meizhen

AU - Yu, Fengwen

AU - Gu, Dayong

AU - Xie, Qinglong

AU - Min, Min

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N2 - Chemical absorption was employed for the harmless treatment of sulfuryl fluoride (SO2F2) in the simulated residual fumigant. SO2F2 was absorbed by sodium hydroxide (NaOH) solution in a packed column. Effects of spray density, gas flow rate, concentration of NaOH solution, and inlet SO2F2 volume concentration on SO2F2 removal efficiency were investigated at room temperature. It was found that SO2F2 could be removed completely when inlet SO2F2 volume concentration, spray density, gas flow rate, and NaOH concentration were 0.50%, 12 m3/(m2 · h), 0.12 m3/h, and 0.68 mol/L, respectively. According to the two-film theory, a mathematical model based on Onda correlations was developed to describe the removal efficiency of SO2F2. Comparison between the experimental data and the calculated data proved that the predictability of the proposed model was within the maximum deviation of 8.0%. Aqueous NaOH solution after absorption was analyzed. It was found that the SO2F2 was fixed and converted to NaF, NaSO3F, and Na2SO4.

AB - Chemical absorption was employed for the harmless treatment of sulfuryl fluoride (SO2F2) in the simulated residual fumigant. SO2F2 was absorbed by sodium hydroxide (NaOH) solution in a packed column. Effects of spray density, gas flow rate, concentration of NaOH solution, and inlet SO2F2 volume concentration on SO2F2 removal efficiency were investigated at room temperature. It was found that SO2F2 could be removed completely when inlet SO2F2 volume concentration, spray density, gas flow rate, and NaOH concentration were 0.50%, 12 m3/(m2 · h), 0.12 m3/h, and 0.68 mol/L, respectively. According to the two-film theory, a mathematical model based on Onda correlations was developed to describe the removal efficiency of SO2F2. Comparison between the experimental data and the calculated data proved that the predictability of the proposed model was within the maximum deviation of 8.0%. Aqueous NaOH solution after absorption was analyzed. It was found that the SO2F2 was fixed and converted to NaF, NaSO3F, and Na2SO4.

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Harmless Treatment of Sulfuryl Fluoride by Chemical Absorption

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