Precipitation Conditions of Chevreul's Salt Using (NH4)(2)SO3 from Synthetic Aqueous CuSO4 Solutions


ÇALBAN T., Kaynarca B., SEVİM F. , EROĞLU H.

ASIAN JOURNAL OF CHEMISTRY, cilt.26, ss.6111-6117, 2014 (SCI İndekslerine Giren Dergi)

  • Cilt numarası: 26 Konu: 18
  • Basım Tarihi: 2014
  • Doi Numarası: 10.14233/ajchem.2014.16785
  • Dergi Adı: ASIAN JOURNAL OF CHEMISTRY
  • Sayfa Sayısı: ss.6111-6117

Özet

In this study synthetic aqueous CuSO4 solution at a particular concentration was prepared, Chevreul's salt was precipitated using (NH4)(2)SO3 solutions prepared at various concentrations. (NH4)(2)SO3 solution was added drop by drop to the synthetic aqueous CuSO4 solution. Chevrenl's salt Was characterised by XRD and SEM analysis. The effects of parameters such as (NH4)(2)SO3 concentration, teMperature, stirring Speed and reaction time were investigated on precipitation of Chevreul's salt 2 factorial experimental design and orthogonal central Composite design methods in the precipitation experiments were used It was observed that the most effective parameters on the precipitation of Chevreul's salt were the temperature and the stirring speed The obtained optimum:conditions on maximum copper precipitation were the (NH4)(2)SO3 concentration 0.4 M, the temperature at 60 degrees C the stirring speed was at 700 rpm and 15 min for reaction time The chosen stationary parameters at the initial stage of the reaction were concentration of CuSO4 solution 0.25 M and pH 4. Under these optimum conditions, the precipitated copper was 98.4 %.