Affiliation:
1. Jiangsu Academy of Environmental Sciences
Abstract
Batch test had been carried out to determine the potential and the effectiveness of the novel composite adsorbent in removal of fluoride, iron and manganese from aqueous solution. It was found that the composite adsorbent could effectively not only remove Fe (II) and Mn (II) also fluoride from water, the maximum adsorption capacities for F-, Fe (II) and Mn (II) were 4.09mg·g-1 4.00mg·g-1 and 3.50mg·g-1 respectively. Kinetics data obtained for the adsorption process fitted the Lagergren First-order equation. The Langmuir adsorption isotherm was found to fit the experimental data derived from F- (R2= 0.9992), Fe (II) (R2=0.9858) and Mn (II) (R2=0.9876) removal. Both Fe (II) and Mn (II) removal increased with increase in solution pH, but F- removal remained relatively stable in pH 4.0~9.0. The process of adsorption of F-, Fe (II) and Mn (II) from aqueous solutions by the composite adsorbent was an endothermic process. The above results indicated the composite adsorbent can be possibly applied in F-, Fe (II) and Mn (II) removal from drinking water.
Publisher
Trans Tech Publications, Ltd.
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