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Article

Variations in the Texture Profile Analysis (TPA) Properties of Clay/Mineral-Medicinal Water Mixtures for Pelotherapy: Effect of Anion Type

1
Dpto. Geología y Geoquímica, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain
2
Facultad de Medicina, Universidad Complutense de Madrid, 28040 Madrid, Spain
*
Author to whom correspondence should be addressed.
Minerals 2019, 9(3), 144; https://doi.org/10.3390/min9030144
Received: 30 January 2019 / Revised: 24 February 2019 / Accepted: 27 February 2019 / Published: 28 February 2019
(This article belongs to the Special Issue The Universal Application of Clay Minerals)
A peloid’s liquid phase can be mineral, sea or salt-lake water. This study examines the interactions among three materials, two special clays (bentonite and sepiolite) and one common clay, and three chemically different mineral-medicinal waters. In all clay–water mixtures, the hardness and adhesiveness decreased with the amount of water in the mixture. For a given hardness or adhesiveness, sepiolite retained more water than the other clays, especially in the presence of sulphate-rich mineral-medicinal water (73%). In contrast, the common clay retained the least amount of water (26%), and the bentonite samples returned an intermediate value for the amount of retained water (52–53%). These differences had a strong influence on the thermal behaviour of the mixtures and, hence, should be taken into account for their use in thermotherapy applications. There were no significant differences in the instrumental texture of the clay pastes according to the predominant anion in the mineral-medicinal waters. View Full-Text
Keywords: instrumental texture; hardness; adhesiveness; bentonite; sepiolite; common clay; mineral-medicinal water instrumental texture; hardness; adhesiveness; bentonite; sepiolite; common clay; mineral-medicinal water
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MDPI and ACS Style

Pozo, M.; Armijo, F.; Maraver, F.; Zuluaga, P.; Ejeda, J.M.; Corvillo, I. Variations in the Texture Profile Analysis (TPA) Properties of Clay/Mineral-Medicinal Water Mixtures for Pelotherapy: Effect of Anion Type. Minerals 2019, 9, 144. https://doi.org/10.3390/min9030144

AMA Style

Pozo M, Armijo F, Maraver F, Zuluaga P, Ejeda JM, Corvillo I. Variations in the Texture Profile Analysis (TPA) Properties of Clay/Mineral-Medicinal Water Mixtures for Pelotherapy: Effect of Anion Type. Minerals. 2019; 9(3):144. https://doi.org/10.3390/min9030144

Chicago/Turabian Style

Pozo, Manuel, Francisco Armijo, Francisco Maraver, Pilar Zuluaga, José M. Ejeda, and Iluminada Corvillo. 2019. "Variations in the Texture Profile Analysis (TPA) Properties of Clay/Mineral-Medicinal Water Mixtures for Pelotherapy: Effect of Anion Type" Minerals 9, no. 3: 144. https://doi.org/10.3390/min9030144

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