사진폐액으로부터 용매추출에 의한 은의 제거 및 회수에 대한 기초연구

Fundamental Studies for the Removal and Recovery of Silver from Waste Photo-Developing Solution by Solvent Extraction

  • 이선화 (이화여자대학교 환경학과) ;
  • 김동수 (이화여자대학교 환경학과) ;
  • 이화영 (한국과학기술연구원)
  • Lee, Sun-Hwa (Department of Environmental Science and Engineering Ewha Womans University) ;
  • Kim, Dong-Su (Department of Environmental Science and Engineering Ewha Womans University) ;
  • Lee, Hwa-Young (Metal Processing Research Center Korea Institute of Science and Technology)
  • 투고 : 2005.09.15
  • 심사 : 2005.11.18
  • 발행 : 2006.01.30

초록

Fundamental studies were carried out for an effective removal and recovery of silver from waste photo-developing solution by solvent extraction. The organic solvents examined for silver-extraction were ALIQUAT 336, D2EHPA, KELEX 100, and TBP. ALIQUAT 336, which is an anionic exchanger, was found to be efficient for the extraction of silver and the reason for this was considered to be due to the chloride ion contained in its structure. The extent of silver extraction was examined to increase with the concentration of ALIQUAT 336 until it reached 0.6 M and no more extraction was observed above this concentration. The extraction of silver by ALIQUAT 336 was found to reach its pseudo-equilibrium within a few minutes after the reaction started and additional slight increase in silver extraction was observed until 30 minutes of reaction time. The observed differences in silver extraction for artificial and actual waste solutions were considered to be based upon the different ionic form of silver-containing species in these solutions.

키워드

과제정보

연구 과제 주관 기관 : 한국환경기술진흥원

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