TY  - JOUR
TI  - Potentially Exploitable Base-Metal Containing Bentonite
Clay Minerals oflbeshi-Ikorodu South-Western Nigeria
for Oil Bleaching
N2  - .The experiment has been undertaken to evaluate the bleaching capacity of
lbeshi Montmorillonite-Bentonite clay to be used on soya bean oils (edible oils). The
clay capacity for bleaching was evaluated before and after acid activation processes.
The acid-activated Bentonite was prepared from raw Bentonite with sulphuric acid of
concentrations 6 M, 7 M, and 8 M; this is because availability of hydrogen is a
competitor at ions exchange site. Acid activation promotes catalytic activities by
increasing the number of active sites of the clay samples. The results from AAS, GeMS
analysis and the spectra of the raw clay indicated that the dominant components
present were Ah~, MgO, CaO, Na20, and K20 together with Fe2~, Ti02, Mn02 and
P20 5. The ratio ofNa20:CaO is 0.24-0.30, a value less than one, indicative the presence
of montmorillonite, and the Si02 : Ah03 between ratio of 1.12-1.50 greater than one.
The optimum acid concentration for industrial bleaching is 6 M H2S04. However, the
exchange capacity was observed at pH 7. The work has shown that activated
montmorillonite/Bentonite clay has other useful organic compounds such as organic
complexes 2, 4-Nonadienal; up to 8% a-Tocopherol. Tests for bleaching performance
evaluation confirmed that the clay has moderately bleaching action as shown by
percentage colour reduction. The colour reduction for natural clay was 9.1 %, this value
increases to 27.3% after 8M H2S04 activation. Other properties include the structural
characteristics, free fatty acid value, viscosity were also recorded. The availability of Bentonite across Nigeria makes it a potential industrial mineral for the economy
development
UR  - http://eprints.covenantuniversity.edu.ng/4298/
ID  - eprints4298
IS  - 2
VL  - 2
Y1  - 2014/12//
A1  - Inegbenebor, A. I.
A1  - Sanya Olu, Olukayode P
A1  - Kehinde, O. O.
A1  - Inegbenebor, A.O.
AV  - public
JF  - Covenant Journal of Physical and Life Sciences (CJPL)
KW  - Bentonite
KW  -  clay
KW  -  dominant
KW  -  components
KW  -  acid-activated
ER  -