Characterization of a bentonite and its permanent aqueous suspension

Year 2020, Volume: 7 Issue: 1, 11 - 18, 15.02.2020

Fatma Eda Özgüven Abdullah Devrim Pekdemir Müşerref Önal , Yüksel Sarıkaya

https://doi.org/10.18596/jotcsa.535937

Cited By: 3

Abstract

A bentonite sample taken from Reşadiye
(Tokat/Turkey) deposite was mixed with distilled water. The formed permanent
aqueous suspension was separated by decantation from the flocculated solid
fraction. The deflocculated mass percent of the bentonite was evaluated almost
60% by weighing. The bentonite and its permanently suspended solid fraction are
examined by using X-ray diffraction, chemical, thermal, cation exchange, and particle
size analyses. Mineralogy and chemical composition of the samples were
discussed with respect to the experimental results. A sodium rich aluminum, iron
and magnesium smectite was determined as the major clay mineral in the
bentonite and also illite as minor one. Clinoptilolite, plagioclase, quartz,
opal-CT, calcite, magnesite, and dolomite are the nonclay minerals found in the
bentonite as impurities. The suspension contains large amount sodium rich
smectite and plagioclase whereas lesser opal-CT. Particle size of the bentonite
and deflocculated fraction was found to be lesser than 11 µm and 2 µm,
respectively.

Keywords

: Bentonite, Cation exchange capacity, Mineralogy, Smectite

Supporting Institution

Ankara University

Project Number

17H0430010

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