Sorption Of Phenol From Aqueous Solutions
Using Acid-treated Rice Husk
Author(s)
S. B. Daffalla, H. Mukhtar & M. S. Shaharun
Abstract
In this study, the development of low-cost adsorbent material from cheap
abundant rice husk was developed via sulfuric acid treatment. The
physiochemical properties and functional groups characterization of the
adsorbents were evaluated. The effects of pH and contact time were studied in
batch experiments. It was found that sulfuric acid treatment affects the pore size
distribution, surface area, morphological structure and functional groups of the
rice husk. Analysis showed that the surface area of rice husk was increased
7 times from 7.14 to 50.17 m2.g-1. In addition, the surface structure of the rice
husk was changed from a non-porous to a porous surface after treatment. On the
other hand, the uptake of phenol onto the rice husk was increased from 20.06 to
48.62% after treatment. Further, the percentage adsorption of phenol increased
with the increase of the contact time. The maximum uptake of phenol can be
obtained at pH 4. The equilibrium data were well described by the Freundlich
model, while the kinetic data were well fitted to the models of pseudo second
order and Elovich, and followed closely by the Elovich chemisorption model.
Keywords: acid-treated rice husk, phenol removal, adsorption, wastewater
treatment.
Keywords
Keywords: acid-treated rice husk, phenol removal, adsorption, wastewater
treatment.
Related Book
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