Extraction of Minerals and Elimination Effect of Heavy Metals in Water by Korean Quartz Porphyry

한국산 맥반석의 미네랄 용출 및 중금속제거 효과

According to the element analysis of Korean Quartz Porphyry, the ignition loss related to porosity was 7.03, 3.36, 2.09 and 0.73% in the order of Suanbo, Yeachen, Angang and Kyongsan. Extraction of minerals in deionized water and elimination effect of heavy metals in water by Quartz Porphyry were examined. When the Quartz Porphyry of the Suanbo, Yeachen of 0.5~2.0% concentration and the Quartz Porphyry of the Angang of 1.5% concentration were immersed and stirred in deionized water for 3 hours at 180rpm, various minerals concentration of the all stirred water were suitable for potable water. But Quartz Porphyry of the Yeachen was not suitable for potable water because of excess extraction of iron. The elimination rate of lead in single solution was 99% by Quartz Porphyry of the Suanbo, Yeachen and Angang of 3% concentration, Cadmium by Quartz Porphyry of the Suanbo of 7% concentration was eliminated about 98% in 1 hour. The copper was significantly eliminated in Quartz Porphyry of low concentration. Especially in Quartz Porphyry of Angang at 0.4% concentration, the rate of ion exchange was 99% in 4 hours. But elimination effect of arsenic in water by Korean Quartz Porphyry was very low.

한국산 맥반석의 원소분석 결과, 다공성과 밀접한 관계가 있는 강열감량은 수안보, 예천, 안강, 경산산 맥반석 순으로 각각 7.03, 3.68, 2.09, 0.73%였다. 미네랄 용출은 수안보산과 경산산 맥반석이 0.5~2.0%, 안강산은 1.5% 농도 이하에서 탈이온수에 첨가하여 180rpm 에서 3시간 교반했올 때 음용수 수질기준에 적합하였고, 예천산 맥반석은 철분이 다량 검출되어 부적합하였다. 최적화된 농도를 이용한 중금속 제거효과는 단일 용액에서 납의 경우 3%의 맥반석을 사용했을 때 수안보, 예천, 안강산 등이 4시간만에 약 99%가 제거되었고, 카드뮴은 7% 맥반석을 사용한 수안보산이 반응 1시간 후 약 98%가 감소하였다. 그리고 구리는 저농도의 맥반석에서 매우 탁월했는데, 특히 안강산 맥반석의 경우 0.4% 농도에서 4시간만에 약 99% 이상이 이온교환되었다. 그러나 전반적으로 한국산 맥반석들을 이용한 비소 제거효과는 극히 낮았다.