Answer to Question #280722 in Organic Chemistry for ness

Question

Suggest if additional use of lighter fluid could help to extract more iodine from the

aqueous layer.

Answer 1

Separation and recovery of iodine (I 2) in aqueous solution was achieved using permeation and chemical desorption (PCD) with a silicone rubber membrane (SRM). The SRM separated an aqueous feed solution from an alkaline or reducing recovery solution such as a mixture of sodium hydrate and sodium sulfate.

In some cases, the efficiency of a liquid-liquid extraction process can be strongly improved by modifying the distribution coefficient. Thus, an organic acid would prefer the nonpolar solvent when not dissociated (i.e., at low pH) and the aqueous solvent when dissociated (i.e., at high pH).