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http://nopr.niscpr.res.in/handle/123456789/43943| Title: | Oxidation of aqueous sulphur dioxide in suspensions of magnesium oxide: Removal of SO2 from flue gases |
| Authors: | Bhargava, Rachna Rani, Ashu Gupta, K S |
| Issue Date: | Aug-1993 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | The kinetics of oxidation of aqueous SO2 in acetate buffered suspensions of MgO obeys rate law (i) Robs = k[MgO][S(IV)]2[H+]-l ... (i) and the main oxidation product is sulphate. The suggested mechanism involves the formation of surficial complexes between hydroxylated magnesium and S(IV). There exists a close parallelism between Robs and pH of zero point charge, pHzpc, for CdO, MgO and SiO2. The results suggest that in wet-scrubbers, which utilize the slurries of MgO for removal of SO2 from the flue gases, the sulphite formed as a result of SO2 absorption will be oxidized by atmospheric oxygen to sulphate, the extent of which will increase with increase in pH, temperature, slurry density and absorbed SO2. |
| Page(s): | 713-716 |
| ISSN: | 0975-0975(Online); 0376-4710(Print) |
| Appears in Collections: | IJC-A Vol.32A(08) [August 1993] |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| IJCA 32A(8) 713-716.pdf | 310.3 kB | Adobe PDF | View/Open |
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