Abstract
The adsorptivity of Methylene Blue on Korean Yeongil bentonite which was premixed with a salt of KF or $NH_{4}Cl$ etc., treated at $200-500^{\circ}C$, washed and dried, was studied. In case of treatment with$NH_{4}Cl$, slight improvement of the adsorptivity of methylene blue on the products was observed. With KF, treated at$200-300^{\circ}C$, the best results was obtained. The adsorption capacity of the products was improved about 1.7 times than that of original bentonite. With $FeSO_4$ or $Na_{2}CO_3$ etc. improvement of the adsorption capacity on the products was not observed.
우리나라 영산일 bentonite를 KF, $NH_{4}Cl$등의 염과 혼합하여 $200-500^{\circ}C$로 가열처리하여 수세 건조한 시료의 methylene blue 흡착능을 조사하였다. $NH_{4}Cl$를 혼합하여 처리하였을 경우에는 methylene blue 흡착능이 다소 개선되었다. KF를 혼합하여 처리하였을 경우에는$200-300^{\circ}C$의 처리에서 methylene blue의 흡착능이 원시료의 약1.7배까지 개선되었다. $FeSO_4$ 나 $Na_{2}CO_4$등의 염과 혼합하여 처리하였을 경우에는 오히려 methylene blue 흡착능이 감소되었다.