Preparation , Characterization Of Bentonite Carbon Composite And Design Application In Adsorption Of Bromothymol Blue Dye

New bentonite carbon composite was prepared and characterized by Fourier transform infra red spectroscopy, Scanning electron microscope, X-ray fluorescence & X-ray diffraction. The X-ray diffraction profile of the composite showed different characteristics in relation to its precursor clay and coke breeze carbon, a displacement of the diffraction peaks occurs, suggesting carbon intercalation between the clay layers. The optimum adsorption efficiency for bromothymol blue dye on bentonite carbon composite, was obtained. Under these conditions the adsorbent dose was ≈ 20g.l -1 , the equilibrium between the adsorbate in the solution and the adsorbent surface was practically achieved in 90min at pH 1.0. Adsorption kinetics was found to follow a pseudo-second-order rate expression and equilibrium adsorption data of bromothymol blue dye on bentonite carbon composite was best represented by the Langmuir isotherm. Keywords—Bentonite clay; coke breeze carbon; composite; characterization; bromothymol blue