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  • Selective removal of Cu from acid mine water containing excess of Fe and other accompanying metals was studied using model solutions having composition based on mine water from abandoned mines in Roros region in Norway. The work was focused on the selectivity of the process and waste minimization. For this purpose a combination of ion exchange with consequent electro winning of Cu from regenerant solution was selected. Chelating ion exchanger Dowex XFS-43084 was used for Cu removal. During the sorption cycle Cu was removed with high selectivity and could be easily stripped by sulfuric acid solution. Fe was not taken up by this sorbent and remained almost quantitatively in the treated acid mine water. It was proven that after the electro-winning of Cu it is possible to reuse the treated sulfuric acid solution for regeneration ion exchanger. Fe concentration in the spent sulfuric acid solution increased with every repeated regeneration. However, it was demonstrated that even the Fe concentration after 6
  • Selective removal of Cu from acid mine water containing excess of Fe and other accompanying metals was studied using model solutions having composition based on mine water from abandoned mines in Roros region in Norway. The work was focused on the selectivity of the process and waste minimization. For this purpose a combination of ion exchange with consequent electro winning of Cu from regenerant solution was selected. Chelating ion exchanger Dowex XFS-43084 was used for Cu removal. During the sorption cycle Cu was removed with high selectivity and could be easily stripped by sulfuric acid solution. Fe was not taken up by this sorbent and remained almost quantitatively in the treated acid mine water. It was proven that after the electro-winning of Cu it is possible to reuse the treated sulfuric acid solution for regeneration ion exchanger. Fe concentration in the spent sulfuric acid solution increased with every repeated regeneration. However, it was demonstrated that even the Fe concentration after 6 (en)
  • Modelová důlní voda obsahující 57 mg dm-3 Cu a 1000 mg dm-3 Fe byla zpracovávána s cílem selektivně odstranit Cu s minimální spotřebou chemikálií. K tomuto účelu byla zvolena kombinace iontové výměny s následným elektrochemickým zpracováním regeneračního roztoku. Byl použit specielní chelatující ionex Dowex XFS 43084. Během sorpčního cyklu docházelo k vysoce selektivnímu zachytávání iontů Cu. Regenerace byla prováděna roztokem H2SO4. Z použité regenerační kyseliny byla elektrochemicky vyloučena Cu v elektrolyzéru s anexovou membránou. Bylo prokázáno, že elektrochemicky zpracovanou kyselinu je možné opětovně použít k regeneraci ionexu. S každým pracovním cyklem však v kyselině dochází k nárůstu koncentrace Fe. Dále bylo zjištěno, že minimálně 6 opakovaných pracovních cyklů nemá znatelný vliv na průběh sorpce Cu. Navržený způsob selektivního odstraňování Cu iontů vyžaduje proti klasickému jednorázovému použití pouze přibližně 20% původního množství kyseliny sírové. Produktem procesu je metalická měď v (cs)
Title
  • Selektivní odstraňování Cu z důlních vod. (cs)
  • Poster: Selective Removal of Cu from Acid Mine Waters by the Combination of Ion Exchange and Electro-Winning.
  • Poster: Selective Removal of Cu from Acid Mine Waters by the Combination of Ion Exchange and Electro-Winning. (en)
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  • Selektivní odstraňování Cu z důlních vod. (cs)
  • Poster: Selective Removal of Cu from Acid Mine Waters by the Combination of Ion Exchange and Electro-Winning.
  • Poster: Selective Removal of Cu from Acid Mine Waters by the Combination of Ion Exchange and Electro-Winning. (en)
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  • RIV/60461373:22310/05:00014036!RIV06-MSM-22310___
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  • RIV/60461373:22310/05:00014036
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  • Selective Removal of Cu from Acid Mine Waters by the Combination of Ion Exchange and Electro-Winning (en)
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  • Bouzek, Karel
  • Paidar, Martin
  • Jelínek, Luděk
  • Burda, Richard
  • Matějka, Zdeněk
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  • 22310
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