Equilibrium and dynamic vapour water sorption properties of biochar derived from apple wood

Popescu, C-M ORCID: https://orcid.org/0000-0002-5740-524X, Hill, CAS, Anthony, RVE ORCID: https://orcid.org/0000-0002-6123-1676, Ormondroyd, G and Curling, S 2015, 'Equilibrium and dynamic vapour water sorption properties of biochar derived from apple wood' , Polymer Degradation and Stability, 111 , pp. 263-268.

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Abstract

The water vapour sorption properties of biochar derived from apple wood (Malus sp.) have been studied. The biochar used in the study were formed from wood samples taken from different parts of the trunk and they exhibited different cell wall densities and surface area values when charred under identical conditions. The water vapour adsorption and desorption characteristics of the biochar were investigated over the relative pressure range P/Po ¼ 0e0.95 in a dynamic vapour sorption apparatus and the kinetics was analysed in terms of the parallel exponential kinetics (PEK) model. The PEK model comprises two exponential sorption kinetic terms which are termed fast and slow sorption processes. The fast process is attributed to a linear driving force mass transfer diffusion model, while the slow process is attributed to a relaxation-limited kinetic process. Markedly different sorption behaviour was found between the biochar samples, which had been produced under identical conditions.

Item Type: Article
Schools: Schools > School of Environment and Life Sciences > Ecosystems and Environment Research Centre
Journal or Publication Title: Polymer Degradation and Stability
Publisher: Elsevier
ISSN: 0141-3910
Related URLs:
Depositing User: Dr Rosie Anthony
Date Deposited: 08 Apr 2020 12:26
Last Modified: 08 Apr 2020 12:30
URI: http://usir.salford.ac.uk/id/eprint/56786

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