An Innovative Approach to Oxidative Removal of Hydrogen Sulfide Using the Solution of Peroxo Heteropolyacid

Xinpeng Liu; Rui Wang

doi:10.4209/aaqr.2016.12.0550

An Innovative Approach to Oxidative Removal of Hydrogen Sulfide Using the Solution of Peroxo Heteropolyacid

Technical Notes

Xinpeng Liu, Rui Wang

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School of Environmental Science & Engineering, Shandong University, Jinan 250199, China

Received: December 14, 2016
Revised: February 17, 2017
Accepted: March 28, 2017
Download Citation: ||https://doi.org/10.4209/aaqr.2016.12.0550

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Cite this article:
Liu, X. and Wang, R. (2017). An Innovative Approach to Oxidative Removal of Hydrogen Sulfide Using the Solution of Peroxo Heteropolyacid. Aerosol Air Qual. Res. 17: 1341-1346. https://doi.org/10.4209/aaqr.2016.12.0550

HIGHLIGHTS

The solution of peroxo phosphomolybdic acid was used for H₂S removal.
The H₂S removal efficiency can keep 100% for 10 h through two-stage absorption.
The absorbent can be regenerated simply by adding a small amount of H₂O₂ solution.
The ultimate oxidation product of H₂S is SO₄^2–.

ABSTRACT

A new method of removing H2S using the solution of peroxo phosphomolybdic acid was developed. The results showed that the solution of peroxo phosphomolybdic acid had perfect capacity for H₂S removal. A H₂S removal efficiency of 100% for 10 h could be achieved by using two-stage absorption with an absorbent concentration of 0.02 mol L^–1. The effect of temperature, concentration of peroxo phosphomolybdic acid and H₂S on H₂S removal was explored. According to the results, a high absorbent concentration, low H₂S concentration and slightly excessive H₂O₂ are beneficial to H₂S removal under relatively low temperature. The absorbent showed a perfect regeneration performance, and could be reactivated simply by adding a few drops of 30% H₂O₂ solution. The X-ray photoelectron spectra showed that the H2S was oxidized to SO₄^2– finally.