Lipophilic extractives in process waters during manufacturing of totally chlorine free kraft pulp from eucalypt wood

作者: Ana Gutiérrez , Javier Romero , José C.del Rı́o

DOI: 10.1016/S0045-6535(00)00271-X

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摘要: The chemical composition of lipophilic extractives from process waters throughout a totally chlorine free (TCF) bleaching sequence after kraft pulping eucalypt wood has been studied. These compounds are among the most problematic constituents for both TCF and zero liquid effluent (ZLE) processes, since they tend to accumulate in circuits resulting formation so-called pitch deposits causing serious problems pulp paper industry. Pitch collected at different parts mill were also characterized their compared with that Eucalyptus globulus wood. identification these waters, was performed by gas chromatography chromatography-mass spectrometry using short- medium-length high temperature capillary columns. Sterols, sterol esters, steroid ketones hydrocarbons main identified. species arise survive released into during process. Finally, can deposit on or remain suspended being discharged effluents.

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