Abstract
ABSTRACTOxidation of magnesium sulfite in washing water is essential for the treatment of by-product of shipboard magnesium-based exhaust gas cleaning systems. The purpose of this study is to obtain a highly efficient magnesium sulfite oxidation technology by using the jet aeration process. Response surface methodology and central composite design were used to investigate the effects of major variables on oxidation of magnesium sulfite and optimize the oxidation conditions. The predictions of the two response functions agree well with the experimental data. The optimum oxidation conditions for ship are temperature 318 K, liquid flow rate 4.04 m3/h, and pH 7.70. Under optimal conditions, 12 moles of magnesium sulfite were oxidized by 90% over 15 minutes at an energy consumption of 0.220 kw h.
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