Open AccessBentonite and Montmorillonite maturation with Águas de Lindóia, Peruíbe and Poços de Caldas waters
Author(s) -
Jefferson Koyaishi Torrecilha
Publication year - 2019
Publication title -
brazilian journal of radiation sciences
Language(s) - English
Resource type - Journals
ISSN - 2319-0612
DOI - 10.15392/bjrs.v7i2a.818
Subject(s) - montmorillonite , bentonite , neutron activation analysis , organic matter , loss on ignition , chemistry , environmental chemistry , nuclear chemistry , water content , moisture , mineralogy , geology , radiochemistry , organic chemistry , paleontology , geotechnical engineering
This study aims to characterize the artificial peloid obtained by maturing bentonite and montmorillonite with Águas de Lindóia, Poços de Caldas and Peruíbe water for three months. The pH, moisture, organic matter content, loss on ignition and swelling power of matured and non-matured samples were measured for physicochemical characterization. The elemental concentration was determined by instrumental neutron activation analysis. Results showed that pH, moisture (%) and LOI (%) at 1000 ºC did not change after maturation for all samples and an increase in the organic matter (%) was noted for all samples, mainly in the peloids treated with Peruíbe sea water. The concentration of As, Ba, Br, Ca, Ce, Co, Cr, Cs, K, La, Na, Yb and Zn has changed after the maturation process in both clays and the Br and Na concentration has changed in both clays when matured with sea water from Peruíbe.