شماره ركورد كنفرانس :
5048
عنوان مقاله :
Investigating the synergistic effect of D2EHPA and Cyanex 302 on zinc and manganese separation
Author/Authors :
Tahereh ،Hosseini School of Chemical Engineering - University of Tehran - Tehran, Iran , Fereshteh ،Rashchi School ofMetallurgy and Materials Engineering - University of Tehran - Tehran, Iran , Ehsan ،Vahidi School ofMetallurgy and Materials Engineering - University of Tehran - Tehran, Iran , Navid ،Mostoufi School of Chemical Engineering - University of Tehran - Tehran, Iran
كليدواژه :
Synergistic effect , D2EHPA , Cyanex 302 , extraction isotherm , separation factor
عنوان كنفرانس :
ششمين كنگره بين المللي مهندسي شيمي
چكيده لاتين :
Synergistic effect of Cyanex 302 on extraction of zinc and manganese with D2EHPA in sulfate media was
investigated. Experiments were carried out in the pH range of 1.0–5.0, temperature of 23, 40 and 60 °C with sole
D2EHPA and Cyanex 302 as extractant and D2EHPA to Cyanex 302 ratios of 1:3, 1:1 and 3:1. The experimental results
showed that the co-extraction of zinc and manganese increased with increasing equilibrium pH and temperature.
Increasing the D2EHPA to Cyanex 302 ratio in the organic phase, caused a left shifting of extraction isotherm of zinc
and right shifting of extraction isotherm of manganese. Thus, a better separation of zinc over manganese was achieved.
At low pHs, separation factor is low when pure D2EHPA is used as extractant, however, using Cyanex 302 as synergist,
separation factor increases and results in a better separation of zinc from manganese.
