TY - JOUR
T1 - The mechanism of interphase mass transfer reaction and precipitation process of HDEHP-TBP-Cu-CCl4/H2C2O4-H2O system
AU - Zhang, Dongxiang
AU - Ren, Zhong
AU - Su, Xiaoming
AU - Liu, Cong
AU - Tarasov, V. V.
N1 - Publisher Copyright:
© 2014 Elsevier B.V. All rights reserved.
PY - 2014/11/24
Y1 - 2014/11/24
N2 - A mass transfer system of H2C2O4-H2O/HDEHP (bis(2-ethylhexyl) phosphate)-TBP(tributyl phosphate)-Cu-CCl4 was established, which resulted in the production of copper oxalate precipitation. In an improved Lewis mass transfer cell, the mass transfer process between inorganic phase composed of oxalic acid water solution and the organic phase composed of HDEHP-TBP-Cu-CCl4 were researched by shifting solvents, extraction agents, the ratio of HDEHP and TBP, stirring rate, extraction time, etc. Precipitation produced by mass transfer process was characterized by IR, XRD, TG, TEM and SEM. The mass transfer reaction and system factors, which influence the size and shape of the products, were analyzed. Based on the mass transfer rate, kinetics parameters of the reaction and precipitation response of oxalic acid, HDHEP and TBP in the H2O-H2C2O4/HDEHP-TBP-Cu-CCl4 system, the theory of inter-phase dispersion zone (IDZ) in liquid-liquid system were further developed and the evolution law of dynamic micro-emulsion was uncovered.
AB - A mass transfer system of H2C2O4-H2O/HDEHP (bis(2-ethylhexyl) phosphate)-TBP(tributyl phosphate)-Cu-CCl4 was established, which resulted in the production of copper oxalate precipitation. In an improved Lewis mass transfer cell, the mass transfer process between inorganic phase composed of oxalic acid water solution and the organic phase composed of HDEHP-TBP-Cu-CCl4 were researched by shifting solvents, extraction agents, the ratio of HDEHP and TBP, stirring rate, extraction time, etc. Precipitation produced by mass transfer process was characterized by IR, XRD, TG, TEM and SEM. The mass transfer reaction and system factors, which influence the size and shape of the products, were analyzed. Based on the mass transfer rate, kinetics parameters of the reaction and precipitation response of oxalic acid, HDHEP and TBP in the H2O-H2C2O4/HDEHP-TBP-Cu-CCl4 system, the theory of inter-phase dispersion zone (IDZ) in liquid-liquid system were further developed and the evolution law of dynamic micro-emulsion was uncovered.
KW - Copper oxalate
KW - HDEHP
KW - Interphase dispersed zone
KW - Mass transfer
KW - TBP
UR - https://www.scopus.com/pages/publications/84908458791
U2 - 10.1016/j.seppur.2014.09.026
DO - 10.1016/j.seppur.2014.09.026
M3 - Article
AN - SCOPUS:84908458791
SN - 1383-5866
VL - 137
SP - 116
EP - 126
JO - Separation and Purification Technology
JF - Separation and Purification Technology
ER -