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International Journal of Environment Science and Technology
Center for Environment and Energy Research and Studies (CEERS)
ISSN: 1735-1472 EISSN: 1735-1472
Vol. 13, No. 4, 2016, pp. 1169-1176
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Bioline Code: st16110
Full paper language: English
Document type: Research Article
Document available free of charge
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International Journal of Environment Science and Technology, Vol. 13, No. 4, 2016, pp. 1169-1176
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Bioadsorption by sugarcane bagasse for the reduction in oil and grease content in aqueous effluent
Boni, H. T.; Oliveira, D. de; Ulson de Souza, A. A. & Ulson de Souza, S. M. A. G.
Abstract
Several techniques have been used to reduce the
oil and grease content in aqueous streams; one excellent is
bioadsorption. With a view to provide a sustainable method
for the treatment of oily effluents, the aim of this study was to
evaluate sugarcane bagasse as bioadsorbent to reduce the oil
and grease content of aqueous effluents. Analysis of the
material was performed, and the adsorption experiments
were in a batch system, using a synthetic effluent. The results
showed that the kinetic equilibrium occurred in 0.08 h of
contact. The study of influence of pH of the aqueous phase
and the temperature showed that the adsorption capacity was
proportional to the pH value, but inversely proportional to
the temperature. The adsorption isotherm was obtained at a
temperature of 298.15 K using the Langmuir and Langmuir–Freundlich models, and the maximum adsorption capacity
obtained was 6.65 kg of hydrocarbon per kg of bioadsorbent.
It was verified that sugarcane bagasse represents an excellent
material for application in the treatment of oily aqueous
effluents, since it is associated with low cost and a high
adsorption capacity. The variation in the adsorption capacity
observed as a function of pH of the aqueous phase was not
found to be significant. This is an important characteristic of
the material in terms of its industrial application, verifying
the possibility for its implementation in any treatment process,
demonstrating the great potential of sugarcane bagasse
for use as a sustainable alternative in the reduction in oil and
grease in aqueous effluents.
Keywords
Industrial residue; Adsorption; Aqueous effluent; Bioadsorbent
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