Update: 28 September, 2023
This paper describes the method of analyzing sulfur anions in Kraft liquors using capillary electrophoresis in the chemical recovery process at a Kraft pulp mill. Sulfur anions, such as sulfate in the black liquor, are converted to sulfide anions in the green liquor. Sulfide anions in the pulping reactions produce stronger paper, but if their concentration is too low, the paper loses its strength, and if the concentration is very high, polluting emissions from the Kraft recovery furnaces are increased. Wet chemical tests and Ion Chromatography (IC) have traditionally been used to analyze process liquors. However, capillary electrophoresis is a suitable replacement for IC due to its benefits of less buffer consumption, less maintenance, and considerably shorter run times.
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MD5 Checksum: 2C9DCFBD0C2B1F181FE1CE299C20A850
Publication date: 02 July, 2012
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