Analysis of alkali, carbonate, hydroxide and sulfide in pulping liquors

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This Process Application Note illustrates the straightforward online analysis of alkali (active, effective, total titratable alkali (TTA)), carbonate, hydroxide, sulfide and the causticizing degree in percent (CE%). The analyzer determines white, green, black, and wash liquor with multiple sample lines and outputting results for closed-loop control. The method complies with the pulp and paper industry standard SCAN-N 30:85. Additionally, the sulfate concentration can be measured with thermometric titration.