Harmless Treatment of Sulfuryl Fluoride by Chemical Absorption

NieYong,; Liang, Xiaojiang; JiJianbing,; LuMeizhen,; YuFengwen,; GuDayong,; XieQinglong,; MinMin,

doi:10.1089/ees.2015.0021

Cited by 9 publications

(17 citation statements)

References 16 publications

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“…Chemical methods including chemical absorption and plasma coupled with chemical absorption were proposed for the treatment of SO 2 F 2 after fumigation. , However, there are still some disadvantages including secondary pollution and difficulty to recover SO 2 F 2 . Therefore, it is meaningful to develop a green, economical, and reversible absorbent to capture SO 2 F 2 .…”

Section: Introductionmentioning

confidence: 99%

Solubilities of Sulfuryl Fluoride in 2-Butoxyethyl Acetate, 3-Methoxybutyl Acetate, 2-Methoxyethyl Acetate, 1-Methoxy-2-propyl Acetate, and 2-(2-Ethoxyethoxy)ethyl Acetate

et al. 2018

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A large amount of sulfuryl fluoride (SO2F2) is released into the atmosphere after fumigation, intensifying the greenhouse effect. Therefore, it is important to remove SO2F2 generated in fumigation. In this study, the solubilities of SO2F2 in 2-butoxyethyl acetate (BOEA), 3-methoxybutyl acetate (MOBA), 2-methoxyethyl acetate (MOEA), 1-methoxy-2-propyl acetate (MOPA), and 2-(2-ethoxyethoxy)ethyl acetate (DEOEA) were determined at T = (293.15 to 323.15) K and pressures up to about 600 kPa using the isochoric saturation method. Results showed that SO2F2 solubility in the five acetate derivatives increased with increasing pressure and decreased with increasing temperature. The dissolution of SO2F2 in these solvents belonged to a physical process. Furthermore, the Henry’s law constants and thermodynamic properties including standard Gibbs free energy, enthalpy, and entropy changes of SO2F2 dissolution were further obtained. Compared with water, these five selected acetate derivatives showed potential application for SO2F2 removal. Moreover, the solubilities of SO2F2 in these solvents followed the order of MOBA > MOPA > BOEA > DEOEA > MOEA.

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Section: Introductionmentioning

confidence: 99%

Solubilities of Sulfuryl Fluoride in 2-Butoxyethyl Acetate, 3-Methoxybutyl Acetate, 2-Methoxyethyl Acetate, 1-Methoxy-2-propyl Acetate, and 2-(2-Ethoxyethoxy)ethyl Acetate

et al. 2018

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“…Continual determinations of solubility data at elevated pressures were performed by introducing more SO 2 F 2 into the equilibrium cell to reach a new equilibrium. After the determinations, SO 2 F 2 remaining in the chambers was introduced to an off-gas absorber containing an aqueous NaOH solution (2 mol/L) in case SO 2 F 2 leaked into the atmosphere . Duplicate experiments were run for each biobased solvent system to obtain average values of absorption.…”

Section: Methodsmentioning

confidence: 71%

“…After the determinations, SO 2 F 2 remaining in the chambers was introduced to an off-gas absorber containing an aqueous NaOH solution (2 mol/L) in case SO 2 F 2 leaked into the atmosphere. 12 Duplicate experiments were run for each biobased solvent system to obtain average values of absorption.…”

Section: Industrial and Engineering Chemistry Researchmentioning

confidence: 96%

“…10 Subsequently, plasma coupled with chemical absorption and chemical absorption alone were further employed for the treatment of SO 2 F 2 . 11,12 However, our previous research focused on removing SO 2 F 2 using chemical methods in which SO 2 F 2 recycle is difficult.…”

Section: Introductionmentioning

confidence: 99%

“…Owing to the fact that SO 2 F 2 is stable under normal conditions (its decomposition temperature is up to 400 °C when dry), plasma was first proposed to remove SO 2 F 2 by our group in 2012 . Subsequently, plasma coupled with chemical absorption and chemical absorption alone were further employed for the treatment of SO 2 F 2 . , However, our previous research focused on removing SO 2 F 2 using chemical methods in which SO 2 F 2 recycle is difficult.…”

Section: Introductionmentioning

confidence: 99%

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Sulfuryl Fluoride Absorption from Fumigation Exhaust Gas by Biobased Solvents: Thermodynamic and Quantum Chemical Analysis

Liang

Fei

Xie

et al. 2019

Ind. Eng. Chem. Res.

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With the global phaseout of methyl bromide, much more sulfuryl fluoride (SO2F2) is pouring into the atmosphere after fumigation, intensifying the greenhouse effect. Therefore, the reduction of SO2F2 emission is urgently required. In this paper, biobased solvents are proposed to capture SO2F2. Solubilities of SO2F2 in eight biobased solvents at temperatures from 283.15 to 323.15 K and pressures up to 600 kPa are measured. On the basis of thermodynamic consideration, a parametric method is adopted to select potential physical solvents for SO2F2 absorption. Then, a preliminary quantum chemical analysis is conducted to reveal the mechanism of SO2F2 dissolution in biobased solvents. To verify the selective absorption of SO2F2 from fumigation exhaust gas, which is mainly air, the ideal selectivity of SO2F2/N2 and SO2F2/O2 is also probed. Additionally, the recyclability of biobased solvents is examined. Results show that these selected biobased solvents have significantly larger absorption capacities than water. Based on the analysis of solubility data, it is found that bis(2-ethylhexyl) azelate with higher SO2F2 capacity also has smaller Hildebrand solubility parameter and larger SO2F2–solvent interaction energy. Moreover, the interactions between SO2F2 and biobased solvents are revealed to be dispersion interactions. The ideal selectivity of SO2F2/N2 and SO2F2/O2 ranging from 19.98 to 126.93 proves that the selective absorption of SO2F2 is feasible. In addition, the solubility of SO2F2 in bis(2-ethylhexyl) azelate is almost unchanged after six absorption–desorption cycles.

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Hydrogen Peroxide-Assisted Alkaline Defluorination of the Fumigant and Potent Greenhouse Gas, Sulfuryl Fluoride: Hydrogen Peroxide as a Nucleophilic Reagent

Chen,

Wang,

Allabakshi

et al. 2024

Environ. Sci. Technol.

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Harmless Treatment of Sulfuryl Fluoride by Chemical Absorption

Cited by 9 publications

References 16 publications

Solubilities of Sulfuryl Fluoride in 2-Butoxyethyl Acetate, 3-Methoxybutyl Acetate, 2-Methoxyethyl Acetate, 1-Methoxy-2-propyl Acetate, and 2-(2-Ethoxyethoxy)ethyl Acetate

Solubilities of Sulfuryl Fluoride in 2-Butoxyethyl Acetate, 3-Methoxybutyl Acetate, 2-Methoxyethyl Acetate, 1-Methoxy-2-propyl Acetate, and 2-(2-Ethoxyethoxy)ethyl Acetate

Sulfuryl Fluoride Absorption from Fumigation Exhaust Gas by Biobased Solvents: Thermodynamic and Quantum Chemical Analysis

Hydrogen Peroxide-Assisted Alkaline Defluorination of the Fumigant and Potent Greenhouse Gas, Sulfuryl Fluoride: Hydrogen Peroxide as a Nucleophilic Reagent

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