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2020 Vol.57, Issue 3

Research Paper

Fundamental Study on Adsorption of Manganese in Water using Manganese-oxide coated Sand (MCS) Generated in a Filtration Tank of a Mine Drainage Treatment Facility

광산배수 처리시설 사여과조에서 생성된 망간산화물 피복모래(MCS)를 이용한 수중 망간 흡착 기초 연구

Sangwoo Ji1*
,
Dong-Wan Cho1
,
Gil-Jae Yim1
,
Jong-Man An3
,
Gi-O An2
,
Jeong-Yun Jang14
,
Young-Wook Cheong1
지 상우1*
,
조 동완1
,
임 길재1
,
안 종만3
,
안 기오2
,
장 정윤14
,
정 영욱1
1Geologic Environment Division, Korea Institute of Geoscience and Mineral Resources (KIGAM)
2Geoscience Platform Division, Korea Institute of Geoscience and Mineral Resources (KIGAM)
3Dept. of Facilities Management, Korea Mine Reclamation Corporation (MIRECO)
4Dept. of Earth Resources and Environmental Engineering, Hanyang University
1한국지질자원연구원 지질환경연구본부
2한국지질자원연구원 지오플랫폼연구본부
3한국광해관리공단 시설운영부
4한양대학교 자원환경공학과
* Corresponding Author
30 June 2020. pp. 249-256
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Abstract

This study tested the feasibility of using manganese-oxide coated sand (MCS) collected in a mine drainage treatment facility, for the adsorption of Mn(II) in the aqueous solution. Na-birnessite was detected as the main mineral phase on the surface of MCS. The Mn(II) adsorption characteristics of MCS were evaluated using a series of parameters including initial pH, reaction time, and initial concentration. The pH of the reacted solutions converged to pH 6.19±0.04 when the initial values were above 5; the adsorption amount leveled off at 1.47±0.11 mg/g. The maximum adsorption amount was found to be 1.402 mg/g in the Langmuir model fitting results. The KF constant calculated by the Freundlich model was 0.645 and the adsorption strength (n) was 5.225. As a result, it can be concluded that the filter sand naturally coated by Na-birnessite in the treatment facility possesses the outstanding ability to remove dissolved manganese present in the wastewater.

Keywords
Manganese
Manganese-oxide coated sand (MCS)
Birnessite
Adsorption

본 연구에서는 광산배수 처리시설의 사여과조에 형성된 망간산화물 피복모래(manganese-oxide coated sand, MCS)를 흡착제로 활용하기 위한 기초실험을 수행하였다. XRD 분석결과 MCS의 표면에 피복된 망간산화물은 Na-Birnessite인 것으로 나타났다. pH, 반응시간 및 초기농도를 다르게 한 흡착 특성 실험을 수행하였다. 실험 결과 pH 5이상에서 pH는 6.19±0.04로 수렴하였고, 흡착량은 1.47±0.11 mg/g의 흡착량을 보였다. 흡착속도 모델 결과에서는 반응속도가 매우 느린 것으로 나타났다. Langmuir 모델에 의해 도출된 최대 흡착량은 1.402 mg/g 이었으며, Freundlich 모델에서 KF은 0.645, 흡착강도(n)는 5.225로 흡착능력이 우수한 것으로 나타났다. 연구결과, 광산배수 처리시설에서 자연스럽게 Na-birnessite로 피복된 여과사는 폐수 중에 존재하는 용존 망간 제거에 우수한 능력을 갖는 것으로 평가된다.

키워드
망간
망간산화물 피복모래(MCS)
버네사이트
흡착
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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 : 57
  • No :3
  • Pages :249-256
  • Received Date : 2020-05-18
  • Revised Date : 2020-06-11
  • Accepted Date : 2020-06-25
  • DOI :https://doi.org/10.32390/ksmer.2020.57.3.249
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