폐광산 광미에 함유된 비소의 포집에 관한 연구 = A Study on arsenic acquisition in abandoned mine tailings

다국어 초록 (Multilingual Abstract)

This study was carried out with various solvents for the acquisition efficiency of arsenic gas contained in tailings.
The solvents used in this experiment are Silver diethyldithiocarbamate solution((C2H5)2NCS2Ag), Ethanol(C2H5OH), Methanol(CH3OH), Acetone(CH3COCH3), Water, Phosphoric acid(H3PO4), Chloroform(CHCl3), Ammonia water(NH4OH), Sodium hypochlorite(NaClO), Perchloric acid(HClO4), Hydrochloric acid(HCl), Sulfuric acid(H2SO4) and Nitric acid(HNO3).
As a result, it was confirmed that diethyldithiocarbamate acid absorbed arsenic gas at a concentration of 1.0 mg/L, with 100% of the gas absorbed. The highly volatile solvent had low persistence when compared with the acquisition efficiency. A high arsenic concentration of 5.0 N HNO3 was absorbed at an efficiency of about 100%, which demonstrates that diethyldithiocarbamate acid’s acquisition efficiency and, persistence were excellent. In addition, the experimental results show that increasing concentrations of HNO3 lead to increased acquisition efficiency.
Under optimum conditions, when the abandoned mine tailings were used, a capture rate of 45.92% was obtained by acquisition of 1,372.4 mg/L from total arsenic concentration of 2,989 mg/kg.

목차 (Table of Contents)

• List of Tables
• List of Figures
• ABSTRACT
• 제1장 서론
• 제2장 문헌조사 및 기술 현황
• 2.1 국내 폐광산 실태
• 2.2 폐광산 오염물질
• 2.3 비소
• 2.3.1 비소의 정의
• 2.3.2 비소에 의한 영향
• 2.3.3 비소오염사고 사례
• 2.3.4 비소 관련 규제법규 및 각종기준
• 2.4 일반적인 광미 선별 및 처리방법
• 2.4.1 비중선별
• 2.4.2 자력선별
• 2.4.3 정전선별
• 2.4.4 부유선별
• 2.4.5 고형화/불용화법
• 2.4.6 토양세척법/침출법
• 제3장 실험재료 및 방법
• 3.1 실험재료
• 3.2 실험방법
• 3.2.1 Silver diethyldithiocarbamate 용액에 비소가스 포집
• 3.2.2 용해제에 따른 비소가스 포집
• 3.2.3 농도에 따른 HCl, H2SO4, HNO3 의 비소가스 포집
• 3.2.4 농도별, 흡수액 양에 따른 HNO3의 비소가스 포집
• 3.2.5 광미에 함유된 비소 포집
• 3.3 분석방법
• 제4장 결과 및 고찰
• 4.1 Silver diethyldithiocarbamate 용액에 비소가스 포집
• 4.2 용해제에 따른 비소가스 포집
• 4.3 농도별에 따른 HCl, H2SO4, HNO3 의 비소가스 포집
• 4.4 농도별, 흡수액 양에 따른 HNO3의 비소가스 포집
• 4.5 광미에 함유된 비소 포집
• 제5장 결론
• 제6장 참고문헌