REMOVAL OF PHOSPHATE 〖(PO〗_4^(3-)) FROM AQUEOUS SOLUTION USING MAGNETIC MATERIAL DERIVED FROM SNAIL SHELL

Abstract

The aim of this study was to create a magnetic adsorbent from snail shell (TVO) and use it to remove phosphate  from aqueous solution. Snail shell powder was modified with FeCl₃ solution at different weight ratios to determine the most suitable impregnation rate. Batch adsorption experiments were conducted to investigate the adsorption isotherm, kinetics and adsorption mechanism of phosphorus on TVO. The results illustrated that the adsorption of  on TVO is quite good. The kinetics of the adsorption process could be well described by the pseudo-first order model and pseudo-second order model. The Langmuir model was the most suitable model describing the adsorption isotherm of  on TVO. The maximum adsorption capacity can be reached 53.48 mg/g. The ion exchange chemisorption is the main mechanism of the process. This study shows that TVO is a low-cost promising adsorbent to remove phosphate from aqueous solution.