Locust bean gum adsorption onto softwood kraft pulp fibres: isotherms, kinetics and paper strength.

ABSTRACT: The adsorption of locust bean gum (LBG) onto Northern Bleached Softwood Kraft (NBSK) pulp improved paper tensile and burst strength and lowered refining energy by strengthening inter-fibre bonding. Adsorption kinetics and isotherms were investigated to develop a fundamental understanding of the adsorption mechanism. The adsorption rate followed pseudo-second-order kinetics and the activation energy was 99.34 kJ·mol^-1, suggesting chemisorption. The adsorption rate constant increased rapidly with temperature from 25 to 45 °C (k = 1.93 to 24.03 g·mg^-1·min^-1), but the amount adsorbed at equilibrium decreased (q _e  = 1.91 to 0.48 mg·g^-1 o.d. fibre). LBG adsorption to NBSK at 25 °C was consistent with the Langmuir adsorp

SUBMITTER: Chen J 

PROVIDER: S-EPMC8570309 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature