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Adsorption and recovery of the fumigant sulfuryl fluoride from air
Citation Link: https://doi.org/10.15480/882.16152
Publikationstyp
Journal Article
Date Issued
2025-09-13
Sprache
English
TORE-DOI
Volume
13
Issue
6
Article Number
119270
Citation
Journal of Environmental Chemical Engineering 13 (6): 119270 (2025)
Publisher DOI
Scopus ID
Publisher
Elsevier BV
Global emissions of the fumigant and greenhouse gas sulfuryl fluoride (SO2F2) are rising, partly due to its unfiltered venting to the atmosphere after fumigation. Although European law demands emission control for SO2F2, this currently has little practical consequence, due to a lack of feasible separation methods for SO2F2 from air. An evaluation of the state-of-the-art shows that gas adsorption has a high potential to be practically implemented to mitigate SO2F2 emissions from fumigation. In a screening of different commercial adsorbents, the activated carbon Air CC 816 and the zeolite HiSiv 3000 indicated promising adsorption capacities for SO2F2, in dry and humid air. Thereby, this study presents the first comprehensive screening of commercial adsorbents
for SO2F2 recovery in general and the first report on SO2F2 adsorption on activated carbons and zeolites under humid conditions. Air CC 816 and HiSiv 3000 appear to primarily adsorb SO2F2 physically, allowing a recovery for possible reuse and omitting catalytic decomposition of SO2F2. For the zeolite HiSiv 3000, SO2F2 isotherms and mass transfer kinetics are measured and used to derive the adsorption enthalpy. On this zeolite, water and SO2F2 exhibit co-adsorption behaviour where water displaces SO2F2. Based on experimental characterization, a concept for an adsorptive recovery on HiSiv 3000 is designed, suggesting the suitability of hot gas desorption with additional external heat input, or steam desorption, for SO2F2 recovery. Finally, a first field test for SO2F2
adsorption after container fumigation already showed promising breakthrough times on HiSiv 3000.
for SO2F2 recovery in general and the first report on SO2F2 adsorption on activated carbons and zeolites under humid conditions. Air CC 816 and HiSiv 3000 appear to primarily adsorb SO2F2 physically, allowing a recovery for possible reuse and omitting catalytic decomposition of SO2F2. For the zeolite HiSiv 3000, SO2F2 isotherms and mass transfer kinetics are measured and used to derive the adsorption enthalpy. On this zeolite, water and SO2F2 exhibit co-adsorption behaviour where water displaces SO2F2. Based on experimental characterization, a concept for an adsorptive recovery on HiSiv 3000 is designed, suggesting the suitability of hot gas desorption with additional external heat input, or steam desorption, for SO2F2 recovery. Finally, a first field test for SO2F2
adsorption after container fumigation already showed promising breakthrough times on HiSiv 3000.
Subjects
Activated carbon
Adsorption
Fumigant
Recovery
Sulfuryl Fluoride
HiSiv
3000
Zeolite
DDC Class
628: Sanitary; Municipal
660: Chemistry; Chemical Engineering
Publication version
publishedVersion
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1-s2.0-S2213343725039661-main.pdf
Type
Main Article
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2.42 MB
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