Thermal behavior of mixtures of bentonitic clay and saline solutions

Lidia Casas (1) , M. Pozo (2) , C. P. Gómez (1) , Eduardo Pozo (2) , David Bessieres (3) , Frédéric Plantier (3) , Jose Luis Legido (1)

1 Departamento de Física Aplicada
2 Departamento de Geología y Geoquímica
3 LFCR - Laboratoire des Fluides Complexes et leurs Réservoirs

Thermophysical characterization is a useful tool for studying mixtures of clay and saline solutions and evaluating their suitability from a thermotherapic point of view. This work focuses on studying the specific heat capacity, density, thermal conductivity and viscosity of a bentonitic clay (composed mainly of 55% Na+-saturated trioctahedral smectite, 28% sepiolite and 15% illite) mixed with different saline solutions (0, 1, 2, 3 and 3.5%) in the temperature range 293.15 to 317.15K. The results indicate meaningful differences in the thermal behavior of the studied pastes in relation to thermotherapy and pelotherapy.

Mots clés: Bentonitic clay; Salinity; Seawater; Specific heat capacity; Thermophysical properties; Thermotherapy

Domaines: Chimie-Physique [physics.chem-ph]

Lidia Casas, M. Pozo, C. P. Gómez, Eduardo Pozo, David Bessieres, et al.. Thermal behavior of mixtures of bentonitic clay and saline solutions. Applied Clay Science, 2013, 72, pp.18-25. ⟨10.1016/j.clay.2012.12.009⟩. ⟨hal-00830624⟩