This paper describes the experimental results obtained at the Transport of 5-aminosalicylic acid (5ASA) through agitated bulk liquid membrane, using Aliquat 336, as carrier, dissolved in a chloroform membrane. The influence of 5-aminosalicylic acid concentration in the feed source, HCl concentration in the stripping phase and carrier (Aliquat 336) concentration in the membrane were investigated. The optimal pH condition of feed source was established based on the speciation diagram of 5-aminosalicylic acid. The assessment of the Transport process was performed by determining the kinetic parameters—mass transfer coefficient and entrance and exist flow in and out of the chloroform membrane.

Facilitation of contaminant Transport in porous media due to the effect of indigenous colloidal fine materials has been widely observed in laboratory and field studies. It has been explained by the increase in the apparent solubility of low soluble contaminants as a result of their adsorption on the surface of fine particles. Attachment of colloidal fine particles onto the rock surface could be a promising remedy for this challenge. In this experimental study, the effect of five types of metal oxide nanoparticles, γ-Al2O3, ZnO, CuO, MgO, and SiO2, on suspension Transport was investigated. In several core flooding tests, different nanofluids were used to saturate the synthetic porous media. Subsequently, after sufficient soaking time, the suspension was injected into the treated porous media. Analysis of the effluent samples’ concentration by Turbidimeter apparatus demonstrated that the presence of nanoparticles on the rock surface resulted in a significant reduction in fine concentrations in the effluent samples compared with non-treated media; ZnO and γ-Al2O3 demonstrated the best scenarios among the tests performed in this study. In order to characterize the surface properties of the treated porous media, the zeta potential of the surface was measured. Results showed that the treated porous media acts as a strong adsorbent of fine particles, which are the main carrier of contaminants in porous media. These findings were quantitatively confirmed by calculation of the total energy of interaction between the fine particles and rock surface using the Derjaguin-Landau-Verwey-Overbeek theory.

The carrier Facilitated Transport of lithium picrate was studied using a series of non-cyclic polyethers containing different end groups and chain lengths through Bulk Liquid Membrane (BLM) and Supported Liquid Membrane (SLM) systems. The various membrane supports used are viz. PTFE, cellulose nitrate, and dialysis membrane and onion membrane. The amount of Li+ Transported depends upon the structure of the ionophores and membrane supports used. The amount of Li+ ion Transported follows the trend V >> IV ≈ III ≈ II >I >VI > VII > VIII = IX in the BLMs studies. Diethylene glycol dibenzoate proved to be the most efficient carrier for the Transport of the lithium ion through liquid membrane systems.

In this research، two silver salts، AgNO3 and AgBF4 with similar molar concentrations were incorporated into the active layer structure of PES/PVP composite membranes separately. Their different effects on the morphology and performance of ethylene-ethane separation process were investigated through FTIR-ATR، SEM، and gas permeation analysis. FTIR-ATR analysis was performed to survey the variant carbonyl group-silver cations’ complexes. Also، C=O bonds with various weakness and strength cause to create different complexes between carrier cations and non-saturated gas molecules such as ethylene. Therefore، ethylene/ethane separation quality can be affected by carbonyl bond energy. Structure of PVP active layer beside PES support section were observed through scanning electron microscopy. Pure and mixed gas permeation tests were carried out to verification of FTIR analysis and evaluation of separation quality. FTIR experiment demonstrated that Ag+ cations from AgBF4 salt make stronger complexes among polymer chains than cations of other salt and react with higher numbers of PVP active sites، which means AgBF4 salt distribute more effectively in the active layer structure. Permeation test revealed that AgBF4 salt attract ethylene molecules more effectively than AgNO3 salt، which leads to obtain higher ethylene/ethane selectivity. Finally، the maximum ethylene permeation and selectivity was occurred at maximum molar concentration of AgBF4 (50%) and at maximum operational pressure، which were 9. 5 GPU and 43 respectively at mixed gas case. These parameters changed to 15 GPU and 64 at pure gas separation test.