석탄 광산배수에 함유된 금속 침전물의 부선 특성
Flotation of Metal Precipitates in Coal Mine Drainage
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본 연구에서는 인공 폐수 및 석탄 광산배수에 함유된 철, 망간 그리고 알루미늄 침전물 등을 부유선별로 제거할 수 있는지를 알아보았다. Sodium dodecyl sulfate, Aeropromotor 845, 올레인산나트륨 등의 음이온 포수제들 가운데 올레인산나트륨이 철, 망간, 알루미늄 침전물을 부유시키는데 가장 효과적이었다. 인공 폐수[ Fe(III)이온 100 mg/L, Mn(II)이온 50 mg/L, Al(III)이온 50 mg/L]와 석탄광산배수[Fe(III) 16.5 mg/L, Mn(II) 3.2 mg/L, Al(III) 0.1 mg/L]에 NaOH를 첨가하여 금속 이온을 불용성 침전물로 형성시킨 후, MIBC 20 mg/L와 올레인산나트륨 200 mg/L을 첨가하여 부선한 결과, Fe(III)은 pH 7～9의 범위에서, Mn(II)은 pH 9 이상에서 그리고 Al(III)은 pH 7～8의 범위에서 각각 99.0% 이상을 부유되어 제거되었다. pH 9 이상에서 철 침전물의 제거율을 향상시키기 위해 MIBC 및 올레인산나트륨이외에 양이온 응집제인 Superfloc C-573을 첨가하여 부선한 결과, 인공폐수 뿐만 아니라 석탄광산배수에 함유된 철이 pH 9 이상에서 효과적으로 제거되었다.서 론
Abstract
The possibility of the removal of iron, manganese and aluminum precipitates in artificial wastewater and coal mine drainage through flotation was investigated. The sodium oleate among anion collectors such as sodium dodecyl sulfate, aeropromotor 845 and sodium oleate showed the highest floatability to remove the insoluble metal precipitates. Insoluble metal precipitates in artificial wastewater[100 mg/L of Fe(III) ion, 50 mg/L of Mn(II) ion and 50 mg/L of Al(III) ion] and coal mine drainage [16.5 mg/L of iron, 3.2 mg/L of manganese, and 0.1 mg/L of aluminum] formed by a reaction with NaOH were effectively floated by 20 mg/L of MIBC frother and 200 mg/L of sodium oleate collector at a pH 7～9, more than 9, and 7～8, respectively and the residual concentrations of which were less than 1 mgL-1. In order to enhance the removal of iron precipitates at a pH of more than 9, when a cation flocculant, superfloc C-573 was used as a activator in addition to MIBC and sodium oleate, the iron precipitates not only in artificial wastewater but also in coal mine drainage were effectively removed even at a pH of more than 9.
참고문헌 (16)
- "함백폐탄광 지역의 광산배수와 하상퇴적물에 대한 지구화학적 특성", 39(1), pp.35~50 (2002)
- "폐광에 따른 광산지역 환경개선연구", pp.268~ (1995), 석탄합리화사업단
- "사업단 10년사", pp.268~ (1997), 석탄합리화사업단
- "석탄광의 광산배수처리기술 현황 및 전망", 37(1), pp.107~111 (2004)
- "석탄광산배수에 함유된 중금속 이온의 침전 특성", 20(2), pp.125~134 (2007)
- "수질환경보전법시행규칙" (2004)
- "The Zeta Potential of Iron and Chromium Hydrous Oxides during Adsorption and Co precipitation of Aqueous Heavy Metals", pp.561~570 (1996)
- "Precipitate flotation of lead and zinc and their determination by atomic absorption spectrometry", 62(6), pp.523~530 (1997)
- "Preconcentration and determination of trace Cd II and Pb II in a water sample by organic precipitate flotation with 8 hydroxyquinoline", 20(4), pp.431~435 (1999)
- "Flotation Science and Engineering", pp.558~ (1995), Marcel Dekker, New York
- "Influence of tile sythesis parameters on the structural and textual properties of precipitated manganese oxides", 3, pp.889~899 (2001)
- "Advances in Flotation Technology" (1999), SME
- "Environmental applications of the flotation process In Effluent Treatment in the Mining Industry", pp.335~364 (1998)
- "New processes for heavy metals separations from wastewater streams in the mining industry In", pp.85~98 (1996)
- "Classification of flotation processes in wastewater decontamination", pp.469~472 (1999)
- "Flotation in water treatment. In Innovations in Flotation Technology" (1992), Kluwer Academic Publishers