하동군 옥종 지역에서 산출되는 황토의 구리 흡착 특성 = The Copper Adsorption onto 밐wangto?in the Okjong Area, Hadong

다국어 초록 (Multilingual Abstract)

We researched the variation of mineral composition with depth and the Cu adsorption behavior of Hwangto in the Okjong area, tladong. The 4 Hwangto samples were collected from depth 10 ㎝, 25 ㎝, 2-3 m and under 3 m from surface, and analyzed using the X-ray Diffractometer. The Hwangto samples were mostly composed of clay minerals such as kaolinite and ha1 loysite. Two samples from 10 ㎝ and 25 ㎝ contained Fe or Al hydroxide minerals, for example goethite or gibbsite. As depth increases, the content of quartz decreases but that of kaolinite increases. The amount of Cu removal was rapidly rised from pH 4, and reached about 90% at pH 6 and above 90% at pH 7. It is regarded that the trend of Cu removal was affected by the difference in mineral composition. It was relatively well matched between experimental value and calculated value by MINTEQA2 program in the case of high Cu concentration. From this study the precipitation has important role for the removal of Cu ions, particularly in the case of high Cu concentration. However, it was discord between experimental value and calculated one in the dilute concentration circumstances. The reason may be the mistake in parameters, insufficient reaction time, and inadequate consideration of reaction site in mineral surface.