Xinpeng Liu1,2, Rui Wang 1


Shenzhen Research Institute of Shandong University, Shenzhen, Guangdong 518057, China
School of Environmental Science and Engineering, Shandong University, Qingdao, Shandong 266237, China


Received: September 16, 2019
Revised: October 25, 2019
Accepted: November 14, 2019
Download Citation: ||https://doi.org/10.4209/aaqr.2019.08.0423 

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Cite this article:
Liu, X. and Wang, R. (2019). Study on Macro Kinetics of the Desulfurization Processes of Heteropoly Compounds in Ionic Liquids and Aqueous Solutions. Aerosol Air Qual. Res. 19: 2899-2907. https://doi.org/10.4209/aaqr.2019.08.0423


Highlights

  • The macro kinetics of H2S absorption in three HPC-based systems were investigated.
  • The relevant parameters of absorption process were determined.
  • The macro-kinetic equations of practical importance were obtained.

 

ABSTRACT


Ionic liquids and heteropoly compounds have been found to be effective systems for H2S removal due to their unique properties. This study, which investigated the absorption kinetics of these new systems, continues our earlier research. Specifically, the macro kinetic characteristics of the H2S absorption for three systems, viz., a [Bmim]3PMo12O40/BmimCl solution, an aqueous solution of peroxo phosphomolybdic acid and an aqueous solution of CuH2PMo11VO40, were determined using a gas-liquid reaction cell. The gas and liquid phase mass transfer coefficients were measured, and the activation energy was calculated. The H2S absorption for the [Bmim]3PMo12O40/BmimCl solution can be expressed as a macro kinetic equation: NH2S = 6.6 × 10–2∙[exp(–1064/T)]∙CH2S1.120∙C[Bmim]3PMo12O400.099. For the aqueous solutions of peroxo phosphomolybdic acid and CuH2PMo11VO40, the absorption can be expressed as NH2S = 2.68 × 10–6∙[exp(–790/T)]∙CH2S0.252∙CPHPMo0.131 and NH2S = 1.02 × 10–6∙[exp(607/T)]∙CH2S0.510∙CCuH2PMo11VO400.431, respectively.


Keywords: H2S; Absorption; Macro kinetics; Heteropoly compound; Ionic liquid.




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