Harmless Treatment of Sulfuryl Fluoride by Chemical Absorption

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

Research output: Contribution to journalArticlepeer-review

3 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 languageEnglish (US)
Pages (from-to)789-795
Number of pages7
JournalEnvironmental Engineering Science
Volume32
Issue number9
DOIs
StatePublished - 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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