Molecular Weight Distributions of Organic Halogens In Bleached Kraft Pulp Mill Effluents
The molecular weight distribution of chlorinated compounds of bleached kraft mill effluent (BKME) was studied by aqueous and nonaqueous size exclusion chromatography (SEC) and by ultrafiltration. Ninety percent of the BKME halogenated organics dissolved into tetrahydrofuran used as a nonaqueous SEC eluent. The tetrahydrofuran-soluble component of the BKME had the the molecular weight distribution as the original BKME when both were analyzed by aqueous SEC. Over 85% of the chlorinated material of BKMEs studied by nonaqueous SEC was of low molecular mass (<1000 g/mol).