Most of the phase-transfer catalyzed reactions involve an aqueous liquid phase and an organic liquid phase (liquid liquid PTC) or a solid phase and an organic liquid phase (solid liquid PTC).
However, by using an oily liquid and an aqueous one, and by covering one side of the channel with a substance that repels water and the other side with one that attracts water, this can be avoided.
In this work, an environmentally friendly solvent extraction approach has been developed to selectively separate neodymium (III) from cobalt (II) and nickel (II) by using an ionic liquid-based aqueous two phase system (IL-ATPS).
A procedure for uptake of zinc ions from an acid aqueous effluent using a surfactant liquid membrane contactor (SLM) was studied.
The aqueous phase was examined using a high-performance liquid chromatograph (Shimadzu LC-20AD, Aminex HPX-87H column 300 × 7.8 (i.d).
The radioactivity in the aqueous phase was measured using a liquid scintillation counter to estimate the amount of t-H2O released, and the (C2H5 2O phase was evaporated to dryness.
The vials were shaken at room temperature to extract steroids into aqueous phase and steroid levels were estimated using a liquid scintillation counter (Beckman, USA).
The residual aqueous phase was acidified to pH 1 2 using a 15% aqueous HCl solution.
An aqueous solution of 0.2 wt% H2SO4 was used to impregnate the wheat straw for 1 h, using a liquid to dry straw weight ratio of 20 1.
The gas liquid equilibrium data for desulfuration of natural gas (NG) by using a mixed aqueous alkanolamine solution was investigated and the results were used for evaluating their ability of removing hydrogen sulfide.
