A new treatment method for SOx has been examined using a slurry of Mg-Al oxide in H2O. Dissolution of SOx in the slurry produces SOx˙Mg-Al LDH, which can be calcined to yield sulfuric acid, MgO, and MgAl2O4. In addition, the treatment of H2SO4 with Mg-Al oxide was examined in terms of kinetics and equilibrium studies in order to clarify the nature of the reaction between the Mg-Al oxide slurry and SOx. We also examined this Mg-Al oxide treatment method for NOx. The NOx dissolves in the Mg-Al oxide slurry and produces NOx˙Mg-Al LDH. The isolated NOx˙Mg-Al LDH can also be calcined, yielding in this case, nitric acid and the reconstituted Mg-Al oxide. In addition, the treatment of HNO3 with Mg-Al oxide was examined with respect to kinetics and equilibrium studies in order to clarify the nature of the interaction between the Mg-Al oxide and NOx. Finally, we demonstrated the simultaneous removal of SO2 and NO2 from a mixed gas stream using the Mg-Al oxide slurry treatment.
|Title of host publication||Layered Double Hydroxides (LDHs)|
|Subtitle of host publication||Synthesis, Characterization and Applications|
|Publisher||Nova Science Publishers, Inc.|
|Number of pages||28|
|Publication status||Published - 2015 Apr 1|
ASJC Scopus subject areas
- Materials Science(all)