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magicpopo
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2Â¥2007-03-03 19:02:35
lw1966hhh
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the oxidation of the sulphites to sulphates is perfoemed in a packed column.opreating batchwise,by recycling the solution in the column where ambient air is fed countercurrently. the oxidation yield checked by laboratory analysis is up to 90%;a redox value of less than 50 ppm sulphite can be achieved by a final adjustment with NaClO or H2O2. |

3Â¥2007-03-04 11:20:34
wonder2006
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4Â¥2007-03-06 18:47:18














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