Sorption and thermodynamic properties of wood of Pinus canariensis C. Sm. ex DC. buried in volcanic ash during eruption

Simón García, Cristina and García Esteban, Luis and Palacios de Palacios, Paloma de and Garcia Fernandez, Francisco and García Iruela, Alberto and Martín-Sanpedro, Raquel and Eugenio, María Eugenia (2017). Sorption and thermodynamic properties of wood of Pinus canariensis C. Sm. ex DC. buried in volcanic ash during eruption. "Wood Science And Technology", v. 51 (n. 3); pp. 517-534. ISSN 0043-7719. https://doi.org/10.1007/s00226-016-0884-3.

Description

Title: Sorption and thermodynamic properties of wood of Pinus canariensis C. Sm. ex DC. buried in volcanic ash during eruption
Author/s:
  • Simón García, Cristina
  • García Esteban, Luis
  • Palacios de Palacios, Paloma de
  • Garcia Fernandez, Francisco
  • García Iruela, Alberto
  • Martín-Sanpedro, Raquel
  • Eugenio, María Eugenia
Item Type: Article
Título de Revista/Publicación: Wood Science And Technology
Date: 2017
Volume: 51
Subjects:
Freetext Keywords: Equilibrium Moisture Content; Crystallinity Index; Isosteric Heat; Juvenile Wood; Mature Wood
Faculty: E.T.S.I. Montes, Forestal y del Medio Natural (UPM)
Department: Sistemas y Recursos Naturales
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

The hygroscopicity and thermodynamic properties of Pinus canariensis wood buried in volcanic ash, dating from 1100 BC, were studied and compared with recently felled juvenile and mature wood of the same species. The sorption isotherms were obtained by the saturated salt method at 35 and 50 C. The isotherms were fitted using the Guggenheim–Anderson–de Boer model. The thermodynamic parameters were determined following the Clausius–Clapeyron integration method. To understand the behaviour of each type of wood, the chemical composition, infrared spectra and X-ray diffractograms were determined for each sample. The mature wood has a higher sugar content and lower extractive content than the juvenile and the buried wood. For both temperatures, the isotherm of the mature wood is above the isotherm of the juvenile wood and this, in turn, is above the isotherm of the buried wood, primarily influenced by the higher cellulose and hemicellulose contents and lower extractives content in the mature wood, resulting in a higher number of accessible –OH groups. Degradation of the buried wood due to high temperatures explains why its isotherms are below the isotherms of the recent wood. The energy involved in the desorption process is greater than in adsorption. Similarly, more energy is involved in the mature wood than in the juvenile wood, and the energy involved in the juvenile wood is greater than in the buried wood.

Funding Projects

TypeCodeAcronymLeaderTitle
Government of SpainAGL2009-12801UnspecifiedUnspecifiedSpanish National Plan for Scientific Research

More information

Item ID: 53471
DC Identifier: http://oa.upm.es/53471/
OAI Identifier: oai:oa.upm.es:53471
DOI: 10.1007/s00226-016-0884-3
Official URL: https://link.springer.com/article/10.1007/s00226-016-0884-3
Deposited by: Memoria Investigacion
Deposited on: 11 Jan 2019 10:03
Last Modified: 23 Apr 2019 13:35
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