Extraction of phenol from wastewater by -octanoylpyrrolidine

Carbohydrates-tailored phase tunable systems composed of ionic liquids and water

“…For example, D of phenol with 0.01 mol Á L À1 initial concentration increases from 9.10 in {[C 5 mim]BF 4 + H 2 O} system without glucose to 34.03 with the addition of glucose (0.2500). Surprisingly, D reaches a value of 78.00 in {[C 8 mim]BF 4 + 0.2500 glucose + H 2 O} system, which is 50% higher than the best result by methyl isobutyl ketone (MIBK) among the reported organic solvent extraction systems [31][32][33][34] interaction between hydroxyl group of phenol and hydrogen attached to C2 carbon on imidazolium ring of ILs [35][36][37][38].…”

Recovery of phenol from aqueous solution by supported liquid membrane using vegetable oils as liquid membrane

“…In LMs linear monoalkyl cyclohexane [18], N,N-di (1-methyl heptyl) acetamide [19], dibenzo-18-crown-6 [20], dodecane [21], trioctylamine [22], N-octanoylpyrrolidine [23] have been reported, all of which are synthetic toxic chemicals. The solvents generally used for the liquid membrane processes are typically flammable, volatile, toxic and their use leads to environmental and safety risks.…”

Extraction of phenol from aqueous effluent using triglycerides in supported liquid membrane

“…It may be explained based on the fact that the phenol can be transported through the membrane, when it is present in molecular or undissociated state in aqueous solution. Since the pK a value of phenol is 10, the phenol will be present in undissociated form for the pH values less than 10 [29,61,66]. The extent of dissociation was found to be the least when pH of the feed was maintained at 4.0, which resulted in the highest membrane mass transfer coefficient (3.50 Â 10 À6 m/s).…”