Westudied the removal of heavy metals from synthetic waste water samples by using Golden Apple Snail shells,calcined at 1050OC: they were able to removeup to 30% of copper(II) ions, 88% of cadmium(II) ions and 56% of lead(II) ions. The best performance was at pH 6. Metal removal followed a stable pseudo-second order reaction equation with parameters, k2 and qe, with k2 values for Cu2+0.00377, Cd2+ 0.00278 and Pb2+ 0.00365 g/mg-min and qe values of 9.65,25.9, 16.8 mg/g and we concluded that the sorption mechanism is primarily absorption into the pores of the sorbent . This adsorbing material had two advantages, that is, lower volume of the Golden Apple Snail Shell and a cost-effective absorbent. If further developed, this could lead to better and effective low cost treatment for polluted waste waters.
Keywords:Golden Apple Snail Shell, Absorption, Cadmium, Copper, Lead, Sorption kinetics
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