eCite Digital Repository

Adsorption of wood extractives and model compounds onto bentonite

Citation

Heier, D and Blackstock, T and Stack, K and Richardson, D and Lewis, T, Adsorption of wood extractives and model compounds onto bentonite, Colloids and Surfaces A: Physicochemical and Engineering Aspects, 482 pp. 213-221. ISSN 0927-7757 (2015) [Refereed Article]

Copyright Statement

Copyright 2015 Elsevier B.V.

DOI: doi:10.1016/j.colsurfa.2015.05.018

Abstract

The adsorption of wood extractives and representative model compounds into two different forms of bentonite was studied. The colloidal dispersion showed limited solubility which affected the shape of the adsorption isotherm. Modelling of the adsorption isotherms showed excellent fits with Freundlich and BET isotherm models indicating that multilayer adsorption with cooperative binding was occurring. The wood extractives were found to have greater affinity with the bentonite surface than the model compounds. Bentonite B was found to be a better adsorbent than bentonite A due to the differences in exchangeable cations present and its greater swelling capacity and surface area. The addition of ethanol during the preparation of the colloidal dispersions, as done by previous researchers when studying adsorption of the oleic acid, triolein and abietic acid, appears to reduce the affinity and capacity of the adsorption onto bentonite.

Item Details

Item Type:Refereed Article
Keywords:wood extractives, bentonite, soft colloids, adsorption isotherm, Freundlich isotherm; BET isotherm
Research Division:Chemical Sciences
Research Group:Other Chemical Sciences
Research Field:Industrial Chemistry
Objective Division:Manufacturing
Objective Group:Wood, Wood Products and Paper
Objective Field:Pulp and Paper
Author:Heier, D (Miss Deanne Heier)
Author:Blackstock, T (Mr Taylor Blackstock)
Author:Stack, K (Dr Karen Stack)
Author:Lewis, T (Dr Trevor Lewis)
ID Code:100910
Year Published:2015
Funding Support:Australian Research Council (LP120200241)
Web of Science® Times Cited:1
Deposited By:Chemistry
Deposited On:2015-06-03
Last Modified:2016-05-17
Downloads:0

Repository Staff Only: item control page