Recovery of heavy metals from wastewater


Creative Commons License

Budak T. , Çetin G. , Turhan K. , Yenigül E., Akçin G.

3rd Black Sea Basin Conference on Analytical Chemistry, Constanta, Romanya, 12 - 14 Eylül 2005, ss.100

  • Basıldığı Şehir: Constanta
  • Basıldığı Ülke: Romanya
  • Sayfa Sayısı: ss.100

Özet

Separation of heavy metals from liquid streams has become more and more important. According to the legislative rcgulations, st has to been applied a pretreatment method for industrial waste waters containing toxic heavy metals before their discharging into the canals. '‘Tlte parametric pumping with variation of PH” as an altemative method to the other ciassical pretreatment methods.lt have been applying for the separation and rccovery of heavy metals from plating industry vvaste rinse water. IJnder the ciassical conditions pH is only a weak parameter for this kind of separation.Hovvever, addition of suitable complexing agents or using weakly basic anion exclıangers converts pH to a strong parameter. Application of strongly acidic exchange resins and citric acid allows an effective elimination of metals forming more stable complexes (copper) from other metals forming less stable complexes (ııickel). This is dcmonstrated for the different waste rinse water of metal plating batlı industry. The proposed treatment method has advantage of a regenerant free ion exchange process which is more different one than the other ciassical methods have been applied for the removal of heavy metals