Arsenic Removal from Mine Drainage by Biogenic FeSand Feasibility Study of Sulfate Reducing Bioreactor

Myoung-Soo  Ko; Hyun-Sung  Park; Jong-Un  Lee

doi:10.12972/ksmer.2016.53.6.555

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2016 Vol.53, Issue 6 Preview Page Next Page

Research Paper

Arsenic Removal from Mine Drainage by Biogenic FeSand Feasibility Study of Sulfate Reducing Bioreactor 생물기원 FeS의 광산배수 내 비소제거 및 황산염환원 생물반응기 적용성 연구

31 December 2016. pp. 555-561

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Abstract

Arsenic removal process was assessed by biogenic FeS and applied to As contaminated mine drainage using sulfate reducing bioreactor. Sulfate reducing bacteria (SRB) were isolated from As contaminated paddy soil. The SRB could induce sulfate reduction and produce black precipitate that is FeS. The SRB was identified as Clostridium tyrobutricum that genetically similar with Desulfosporosinus orientiswhich is known as SRB. The maximum removal concentrations of As(III) and As(V) by the biogenic FeS were 4.5 mg/L and 5.7 mg/L, respectively. The sulfate reducing bioreactor could remove approximately 50% of As from Dumoongol mine drainage.

Keywords

Mine drainage

Abandoned mine

Arsenic

Sulfate reducing bacteria

Bioreactor

미생물학적 황산염환원 산물에 의한 As 제거 기작을 규명하고 황산염환원 미생물(sulfate reducing bacteria; SRB)을 적용한 생물반응기를 활용하여 광산배수 내 As 제거에 적용하고자 하였다. 실험에 사용한 SRB는 As로 오염된 토양으로부터 분리하였다. 분리한 SRB는 용액 내 황산염을 전자수용체로 활용하여 검은색의 FeS를 침전시켰다. 분리한 SRB의 동정 결과 Clostridium tyrobutyricum인 것으로 확인되었으며 이는 SRB로 알려진Desulfosporosinus orientis 와 유전적으로 유사한 것으로 나타났다. 분리한 SRB에 의해 형성된 황산염환원 산물에 As 용액을 주입하여 제거여부를 확인한 결과 SRB 배양액 100 mL에서 As(III)는 최대 4.5 mg/L가 제거되었고 As(V)는 5.7 mg/L가 제거되었다. As로 오염된 광산배수가 배출되는 두문골 광산의 광산배수를 대상으로 SRB를 적용한 생물반응기를 설치하여 As제거 실험을 진행한 결과 약 50%의 As가 제거된 것으로 나타났다.

키워드

폐광산

광산배수

비소

황산염환원

미생물

생물반응기

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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 : 53
No :6
Pages :555-561
Received Date : 2016-10-12
Revised Date : 2016-11-07
Accepted Date : 2016-12-22
DOI :https://doi.org/10.12972/ksmer.2016.53.6.555

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

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