OPTIMIZATION OF PARTICLE SIZE OF MAIZE PEAT FOR ADSORPTION OF COLORANTS
OPTIMIZATION OF PARTICLE SIZE OF MAIZE PEAT FOR ADSORPTION OF COLORANTS
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Date
2000-06
Authors
BAKALYIL, BIMOHOR AYUBA
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Abstract
The study developed maize cob peat, prepared eleven different particle sizes of the peat and
tested the adsorption capability of each particle size on dye solutions and textile effluents, with
a view to determining the effective particle size(s) for industrial application.
Each particle size of peat was soaked, squeezed and thoroughly washed to remove the dust
and humin content. The cation exchange capacity of the peat was then determined.
The textile effluents were characterised for pH, dissolved, suspended and total solids. The
number of dye components in each textile effluent was determined using thin layer
chromatography (TLC). Spectral characterisation of the textile effluents and dye solutions was
also undertaken.
When column experiments were undertaken, the particle sizes of 150 μm, 300 (am, and 355
μm were found to be quite effective, because using 4 g each of the particle sizes, it was found
that 850 cm3 of dye samples of M and A at maximum dye house concentrations of 100 ppm
was decolorised by the stated particle sizes to 11 ppm, 18 ppm, 23 ppm and 28 ppm for dye M
and 13 ppm, 21 ppm, 27 ppm and 33 ppm for dye A. The same particle sizes decolorised 70
cm3 of the dye samples at concentrations of 2800 ppm to 58 ppm, 64 ppm, 79 ppm and 108
ppm for dye M and 111 ppm, 128 ppm and 186 ppm for dye A. Also when 40 cm3 of the
crude effluents of PU and PS at absorbances of 0.460 and 0.340 respectively were
administered on 4 g of each of the above particle sizes, the effluents were decolorised to
absorbances of 0.055, 0.075, 0.160 and 0.155 for effluent PU and 0.012, 0.035, 0.048 and
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Description
DEPARTMENT OF CHEMISTRY
FACULTY OF SCIENCE
AHMADU BELLO UNIVERSITY
ZARIA, NIGERIA
Keywords
OPTIMIZATION,, PARTICLE,, SIZE,, MAIZE,, ADSORPTION,, COLORANTS