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Effects of Process Variables on The Electrochemical Recovery of Palladium in A HCl Solution
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  • Effects of Process Variables on The Electrochemical Recovery of Palladium in A HCl Solution
  • Effects of Process Variables on The Electrochemical Recovery of Palladium in A HCl Solution
저자명
Kim. Min-Seuk,Lee. Jae-Chun,Kim. Won-Baek
간행물명
資源리싸이클링 : 한국자원리싸이클링학회지
권/호정보
2005년|14권 1호|pp.55-63 (9 pages)
발행정보
한국자원리싸이클링학회
파일정보
정기간행물|ENG|
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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기타언어초록

This study investigated the electrochemical recovery of palladium in a HCl solution that is used for palladium leaching. The high acidity of HCl solution and the low concentration of Pd ions increased the cathodic overpotential and reduced the limiting current density. Lowering the current density produced dense deposits; however, they were under high tensile stress. Raising the temperature affected both the densification and the stress, which enabled the attainment of dense Pd deposits under low stress. Lowering the current density and raising the temperature up to 70$^{circ}C$ was recommended for the recovery of palladium as sound bulk Pd deposits. Current efficiency was over 85% at the initial stage of recovery may decrease the current efficiency, since a low Pd ion concentration results in a low limiting current density.