Transport of Zn (II) by TDDA-Polypropylene Supported Liquid Membranes and Recovery from Waste Discharge Liquor of Galvanizing Plant of Zn (II)

Abstract

The facilitated passage of Zn (II) across flat sheet supported liquid membrane saturated with TDDA (tri-n-dodecylamine) in xylene membrane phase has been investigated. The effect of acid and metal ion concentration in the feed solution, the carrier concentration in membrane phase, stripping agent concentration in stripping phase, and coions on the extraction of Zn (II) was investigated. The stoichiometry of the extracted species, that is, complex, was investigated on slope analysis method and it was found that the complex (LH) 2 ⋅Zn(Cl 2 ) is responsible for transport of Zn (II). A mathematical model was developed for transport of Zn (II), and the predicted results strongly agree with experimental ones. The mechanism of transport was determined by coupled coion transport mechanism with H + and Cl − coupled ions. The optimized SLM was effectively used for elimination of Zn (II) from waste discharge liquor of galvanizing plant of Zn (II).

Polymer Inclusion Membranes (PIMs) Doped with Alkylimidazole and their Application in the Separation of Non-Ferrous Metal Ions

“…The steric effect of the substituent at position 2 or 4 decreases the stability constants of octahedral complexes of all the metals studied, although it does not hinder the formation of tetrahedral species [29,30,53,55,58,59,60,61,62]. The formation of tetrahedral complexes with 1-alkylimidazoles has been proven for the Zn(II) and Cd(II) ions [42,56,59,71]. The Zn(II) ions were transported across PIMs most effectively.…”

Preparation of an rGO and iron oxide nanoparticle-incorporated polyvinyl acetate based membrane for the removal of Pb2+ from anticorrosive paint industrial wastewater

“…Extending the exposure time between the metal ions and the hybrid membrane in a cell-type reactor can correspondingly increase the removal efficiency due to the greater chances of complex formation and its transport through the membrane from feed to strip phase. 53 Thus, the effect of reaction time on the Pb 2+ ion removal performance by the PVAc/rGO/Fe 2 O 3 membrane was studied under the optimal process parameters and the findings are shown in Fig. 10(a and b).…”

A simulation study of an electro-membrane extraction for enhancement of the ion transport via tailoring the electrostatic properties

“…The effect of various parameters such as feed concentration, carrier concentration, feed phase, and receptor pH on the separation factor and flux of Cd (II) and Ni (II) ions was studied, which concluded that the percentage of cadmium separation is much higher than a nickel 34 . Rehman et al 35 investigated the transfer of zinc (II) through the SLM flat membrane with the carrier TDDA (tri-n-dodecylamine). The stoichiometry of the extracted species, i.e., complex, was investigated using slope analysis, and it was found that complex (LH) 2 ·Zn(CL) 2 is responsible for Zn (II) transmission.…”