Abstract
Aqueous size exclusion chromatography of lignin in effuents from the pulp industry was studied using several mobile phases at pH 8.9–12.0 and an organic semi-rigid high-performance gel (TSK PW type). The calibration and resolution calculations were based on the elution of sodium polystyrenesulphonates. The plate counts nad plate heights of the columns were also determined. The best results were obtained by using as eluent a low-ionic-strength bicarbonate buffer, pH 10.5, with addition of polyethylene glycol. Molecular weights obtained for spent bleaching liquor lignins and lignosulphonate were compared with results obtained with other chromatographic systems. The distribution curves were symmetrical and narrow. The chromatograms of spent E1-stage bleaching liquor obtained with system described and with a Bio-Gel P-60 column were very similar, but differed markedly from the obtained with a Sephadex LH-60 column.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
