Treatment of Selective Sequential Precipitation for Recovering Fe and Al From Mine Water an Abandoned Coal Mine

Songmin Bok; Giljae  Yim; Chamteut Oh; Sangwoo Ji; Youngwook Cheong; Kitae Baek

doi:10.12972/ksmer.2017.54.3.215

All Issue

2017 Vol.54, Issue 3 Next Page

Research Paper

Treatment of Selective Sequential Precipitation for Recovering Fe and Al From Mine Water an Abandoned Coal Mine 폐탄광 광산배수에서 Fe, Al 회수를 위한 선택적 연속침전 처리효율 향상연구

30 June 2017. pp. 215-222

PDF XML

Abstract

Mine drainage discharged from abandoned mines are causing a lot of pollution. Conventional lime dosing process is generates a lot of waste due to the generation of the sludge in the process. Therefore, this study aims to assess the feasibility of both treating the mine drainage while recovering individual metals and decreasing the amount of waste by decreasing the amount of sludge. In order to selectively recovery Fe and Al in the coal mine drainage as high-purity precipitation, we installed a SSP(selective sequential precipitation) system with a buffer tank. The recovery rate and purity of the precipitates were evaluated from field measurement and chemical analysis. We also evaluated the recovery rate and the purity of Fe and Al. The recovery rate of Fe and Al are 99.68~99.70 and 75.00~81.82%, respectively. The purity of Fe and Al was determined to be 96.05~97.61% and 81.01~87.48%, respectively.

Keywords

Acid mine drainage

selective sequential precipitation

Buffer

Recovery

Purity

채굴이 중단된 폐광산으로부터 배출되는 광산배수는 많은 오염을 일으키는 원인이 되고 있다. 과거에서부터 지금까지 광산배수를 처리하기 위한 석회의 사용으로 인해 침전물인 다량의 슬러지 폐기물을 발생시키고 있다. 따라서 본 연구는 광산배수로부터 발생하는 많은 양의 슬러지 폐기물을 감소시키고, 각 금속들을 회수하여 처리하는 것을 목표로 선정하였다. 산성광산배수 내의 용존 금속 중 Fe, Al을 대상으로 고순도 침전물로 침전시키기 위해 buffer 공정을 추가한 SSP(selective sequential precipitation)시스템을 설치하였다. 침전물의 회수율과 순도는 현장에서 측정 및 화학분석을 통해 평가하였다. SSP 공정을 이용하여 Fe, Al의 회수율과 순도를 평가하였다. Fe 회수율은 99.68~99.70 이며, Al 회수율은 75.00~81.82%로 나타났다. Fe 순도는 96.05~97.61%이며, Al 순도는 81.01~87.48%로 나타났다.

키워드

산성광산배수

선택적 연속 침전

완충

회수율

순도

References

De-Almeida, S.R., Castro, C.D., Viganico, E.M., Petter, C.O., and Schneider, I.A.H., 2012. Selective precipitation/UV production of magnetite particles obtained from the iron recovered from acid mine drainage, Minerals Engineering, 29, 22-27.

10.1016/j.mineng.2011.12.013

Hedin, R.S., 2003. Recovery of marketable iron oxide from mine drainage in the USA, Land Contamination and Reclamation, 17(2), 93-98.

10.2462/09670513.802

Lenter, C.M., Macdonald, L.M., Skousen, J.G., and Ziemkiewicz, P.F., 2002. The effects of sulfate on the physical and chemical properties of actively treated acid mine drainage floc, Mine Water and the Environment, 21(3), 114-120.

10.1007/s102300200032

Ji, S.W., Cheong, Y.W., Yim, G.J., and Bhattacharya, J., 2007. ARD generation and corrosion potential of exposed roadside rockmass at Boeun and Mujoo, South Korea, Environmental geology, 52(6), 1033-1043.

10.1007/s00254-006-0543-3

KIGAM, 2014. Development of Control Technology of Geo environmental Hazards Propagation Induced by Mining Activity, GP2012-022-2014(3), 246p.

Matlock, M.M., Howerton, B.S., and Atwood, D.A., 2002. Chemical precipitation of heavy metals from acid mine drainage, Water research, 36(19), 4757-4764.

10.1016/S0043-1354(02)00149-5

Oh, C.T., Han, Y.S., Park, J.H., Bok, S.M., Cheong, Y.W., Yim, G.J., and Ji, S.W., 2016. Field application of selective precipitation for recovering Cu and Zn in drainage discharged from an operating mine, Science of The Total Environment, 557-558, 212-220.

10.1016/j.scitotenv.2016.02.20926994808

Rao, S.R., Leroux, M., and Finch, J., 1992, Resource recovery from acid mine drainage. Metals removal from acidic drainage-chemical methods (part 1), MEND project 3.21.2a, Pointe-Claire, PQ: Noranda Technology Center.

Tabak, H.H., Scharp, R., Burckle, J., Kawahara1, F.K., and Govind, R., 2003. Advances in biotreatment of acid mine drainage and biorecovery of metals: 1. Metal precipitation for recovery and recycle, Biodegradation, 14(6), 423-436.

10.1023/A:102733290274014669873

Wei, X., Viadero, R., and Buzby, K.M., 2005. Recovery of iron and aluminum from acid mine drainage by selective precipitation, Environmental Engineering Science, 22(6), 745-755.

10.1089/ees.2005.22.745

Wei, X. and Viadero, R., 2007. Synthesis of magnetite nanoparticles with ferric iron recovered from acid mine drainage: Implications for environmental engineering, Colloids and Surfaces A: Physicochemical and Engineering Aspects, 294(1-3), 280-286.

10.1016/j.colsurfa.2006.07.060

Information

Publisher :The Korean Society of Mineral and Energy Resources Engineers
Publisher(Ko) :한국자원공학회
Journal Title :Journal of the Korean Society of Mineral and Energy Resources Engineers
Journal Title(Ko) :한국자원공학회지
Volume : 54
No :3
Pages :215-222
Received Date : 2016-09-30
Revised Date : 2017-06-28
Accepted Date : 2017-06-22
DOI :https://doi.org/10.12972/ksmer.2017.54.3.215

Journal of the Korean Society of Mineral and Energy Resources Engineers ISSN:2288-0291(Print) 2288-2790(Online) 한국자원공학회지

All Issue