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Characterization the Removal of Phenol from Aqueous Solution in Fluidized Bed Column by Rice Husk Adsorbent

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Author Affiliations

  • 1College of Material eng. Babylon, University IRAQ
  • 2Faculty of Science, King-Abdul-Aziz, University, Jeddah, Kingdom of Saudi Arabia

Res. J. Recent Sci., Volume 1, Issue (ISC-2011), Pages 145-151,(2012)

Abstract

Pollution deals with the modification of the natural physical and chemical environment of the earth of human activity. Phenolis one of the most toxic industrial pollutants and even at low concentration it is reported to affect water quality and is harmful tohuman health. The objective of this study is to contribute in the search for less expensive adsorbents and their utilizationpossibilities for agricultural waste by – products such as rice husk, for the elimination of phenol from aqueous solution.Experiments have been conducted to examine the liquid – phase adsorption of phenol from aqueous solution by rice husk RH andactivated rice husk ARH(pretreated by 13 M H2SO4 with 0.5 NaOH and thermally treated at 573k). Fluidized bed columnkinetic and isotherm studies were carried out evaluate the effect pH 2 -10, initial phenol concentration 50 – 200 mg/l ,differentbed height 5 – 30 cm , different temperature 298 – 338 K and different flow rate 1 – 7 cm3/s , with 90 min operated the system. Thesorption data obtained from studies at optimized conditions have been subject Langmuir and Freundlich isotherm studies. The datafits well to both the Langmuir and Freundish isotherm models indicating favorable and monolayer adsorption. X – ray diffractionanalysis , which indicates that the RH and ARH mainly consist of amorphous materials. The adsorbent were characterized usingFTIR, it was found that the pretreatment of rice husk increase the specific surface area and changed the functional groups ,therefore leads to increase the capacity of adsorption.

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