Abstract
Granular adsorbent-based Fe2O3/TiO2 was fabricated via the drum granulation method with bentonite as the binder. The granulation process consists of three steps: mixing Fe2O3/TiO2 composite powder; fine coal dust into a homogeneous mixture; granulating by spraying water mist; drying granules and calcining at 500 oC for 1 hour to create pores. The granules used to remove As(V) from aqueous media were investigated using a fixed-bed adsorption column. The effects of inlet As(V) concentration, flow rate, and bed height on the breakthrough characteristics of the adsorption system were determined. The adsorption data were fitted to three well-established fix-bed adsorption models, namely, the Adam-Bohart, Thomas, and Yoon-Nelson models, with a correlation coefficient, R2 > 0.96.
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