초록(영문)
In this study, potato was chosen as a practical and economical heavy metal adsorption model. Purification
eficiency of heavy metals was measured qualitatively by sedimentation reactions. The removal eficiency was
quantified by using ICP-AES and the degre of removal was confirmed by Freundlich and Langmuir isothermal
adsorption models. The results of the sedimentation reaction showed that Pb and Fe had high removal eficiency,
but Co had low removal eficiency. By using ICP-AES to quantify the removal eficiency, Fe, Pb, Cu showed more
than 90% removal eficiency and Cd, Co showed about 80% removal eficiency and the removal model of Pb was
based on the Langmuir model rather than the Freundlich model and Cu, Cd, Zn fited wel in both the Langmuir
and Freundlich adsorption models. The adsorption strength and the adsorption afinity value of Fe were measured
as negative values, which indicates that Fe folows neither adsorption models. In conclusion, The adsorption model
using the potato folows the Langmuir model, which is normaly aplied to adsorbents having a uniform adsorption
energy and a nonpolar absorbate. Therefore, the removal model using potato starch is an eco-friendly heavy metal
removal model that can efectively remove various heavy metals.