Modeling of nickel extraction by D2EHPA in sulfuric media

被引：0

作者：

Sousa Junior, Clenilson da Silva ^{[1
]}

Nascimento, Marisa

Salgueiro Ferreira, Izabelle Lannes ^{[2
]}

机构：

[1] IFRJ Maracana, Inst Fed Educ Ciencia & Tecnol Rio de Janeiro, Rio De Janeiro, Brazil

[2] COPPE UFRJ, Programa Engn Met & Mat, Campinas, Brazil

来源：

REM-REVISTA ESCOLA DE MINAS | 2011年 / 64卷 / 04期

关键词：

Nickel; modeling; solvent extraction; AQUEOUS-SOLUTIONS;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The nickel extraction, from the system NiSO4 - H2SO4 - H2O - D2EHPA - Isoparaffin was studied by a thermodynamic model based on balanced equations for mass and charge. The activity coefficients of all solutes in the aqueous phase were calculated by the modified Davies's equation. By applying this model, the concentration of solutes in the equilibrium was calculated from the values of the total concentration of nickel in solution and pH. The metal extracted species was determined to be NiA(2) (where HA is D2EHPA), and the equilibrium constant of the extraction was found to have a value of 2,83 E-2 from the calculation of non-linear regression realized with the experimental data. The values of distribution coefficients predicted by the model for nickel extraction were in good agreement when compared with experimental results.

引用

页码：447 / 452

页数：6

共 50 条

[21] Statistical Modeling of Zr/Hf Extraction using TBP–D2EHPA Mixtures
Vahid Rezaeinejhad Jirandehi
Davoud Haghshenas Fatmehsari
Sadegh Firoozi
Mohammad Taghizadeh
Eskandar Keshavarz Alamdari
Metallurgical and Materials Transactions B, 2012, 43 : 1262 - 1268
[22] KINETICS OF THE MECHANISM OF EXTRACTION OF URANIUM(VI) FROM SULFURIC-ACID-SOLUTIONS OF D2EHPA
BUROV, BI
GOLYNKO, ZS
SOVIET RADIOCHEMISTRY, 1989, 31 (06): : 685 - 692
[23] Scandium extraction from sulfuric acid solutions by mixtures of D2EHPA and MTAA sulfate in toluene
S. I. Stepanov
Khein P’ei
A. V. Boyarintsev
V. G. Giganov
Maung Maung Aung
A. M. Chekmarev
Theoretical Foundations of Chemical Engineering, 2017, 51 : 846 - 849
[24] Scandium extraction from sulfuric acid solutions by mixtures of D2EHPA and MTAA sulfate in toluene
Stepanov, S. I.
P'ei, Khein
Boyarintsev, A. V.
Giganov, V. G.
Aung, Maung Maung
Chekmarev, A. M.
THEORETICAL FOUNDATIONS OF CHEMICAL ENGINEERING, 2017, 51 (05) : 846 - 849
[25] Facilitated SLM extraction of peptides with D2EHPA as a carrier
Drapala, A
Wieczorek, P
DESALINATION, 2004, 163 (1-3) : 47 - 53
[26] Purification of concentrated nickel sulfuric liquors via synergistic solvent extraction of calcium and magnesium using mixtures of D2EHPA and Cyanex 272
Guimardes, Alexandre Silva
Silva, Lucas Andrade
Pereira, Alexandre Moni
Guedes Correia, Julio Cesar
Mansur, Marcelo Borges
SEPARATION AND PURIFICATION TECHNOLOGY, 2020, 239
[27] On the kinetics of rare-earth extraction into D2EHPA
Geist, A
Nitsch, W
Kim, JI
CHEMICAL ENGINEERING SCIENCE, 1999, 54 (12) : 1903 - 1907
[28] Phase Separation in a Novel Selective Lithium Extraction from Citrate Media with D2EHPA
Punt, Tiaan
Bradshaw, Steven M.
Van Wyk, Petrie
Akdogan, Guven
METALS, 2022, 12 (09)
[29] EXTRACTION OF URANIUM BY D2EHPA EMULSION MEMBRANE.
Wang, De Yi
Zhao, Shu Liang
Tianjin Daxue Xuebao (Ziran Kexue yu Gongcheng Jishu Ban)/Journal of Tianjin University Science and Technology, 1987, (01): : 53 - 59
[30] Synergistic extraction of nucleobases by the combination of calixarene and D2EHPA
Shimojo, K
Goto, M
SEPARATION AND PURIFICATION TECHNOLOGY, 2005, 44 (02) : 175 - 180

← 1 2 3 4 5 →