Resources Recycling (자원리싸이클링)

The Korean Institute of Resources Recycling (한국자원리싸이클링학회)
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Comparison of the Chemical Reactivity between Sulfuric and Methanesulfonic Acids as a Leaching Agent

침출제로 황산과 메탄술폰산의 화학적 반응성 비교

  • Tran, Thanh Tuan (Department of Advanced Materials Science & Engineering, Institute of Rare Metal, Mokpo National University) ;
  • Moon, Hyun Seung (Department of Advanced Materials Science & Engineering, Institute of Rare Metal, Mokpo National University) ;
  • Lee, Man Seung (Department of Advanced Materials Science & Engineering, Institute of Rare Metal, Mokpo National University)
  • ;
  • 문현승 (목포대학교 공과대학 신소재공학과) ;
  • 이만승 (목포대학교 공과대학 신소재공학과)
  • Received : 2021.04.06
  • Accepted : 2021.05.03
  • Published : 2021.06.30
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Abstract

Methanesulfonic acid (MSA) can be considered effective in the leaching of metals because of its advantageous physical and chemical properties. The chemical reactivities of MSA and sulfuric acid were compared based on their structures and the dissolution data of Co and Ni metal. The inductive and resonance effects play a vital role in the chemical reactivities of these two acids. The dissolution percentages of Co and Ni in the sulfuric acid solution were higher than those in the MSA solution under the same experimental conditions. Considering the strong acidity of MSA and the high solubility of its metal salts, MSA can be employed as a leaching agent for the recovery of metals.

메탄술폰산은 우수한 물리화학적 특성을 지니고 있어 금속의 침출에 효과적이다. 분자구조 및 코발트와 니켈 금속의 침출자료를 이용하여 메탄술폰산과 황산의 화학적 반응성을 비교하였다. 유발과 공명효과는 두 산의 반응성에 큰 영향을 미쳤다. 동일한 침출조건에서 코발트와 니켈의 침출률은 메탄술폰산보다 황산에서 높았다. 메탄술폰산의 강한 산도와 금속염의 높은 용해도를 고려하면 메탄술폰산을 금속회수시 침출제로 이용하는 것이 가능하다.

Keywords

Acknowledgement

This work was supported by the Technology Innovation Program (Development of Material Component Technology) (Project number: 2011183) funded by the Ministry of Trade, Industry & Energy (MOTIE, Korea).

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