Abstract
In this paper, chitosan membranes cross-linked with diethyleneglycol diglycidylether (DEDGE) and glutaraldehyde (GA) for the recycle of water in urine were prepared. The characteristics of permeation and separation for an aqueous solution containing urine components through their cross-linked membranes in pervaporation were examined. The obtained cross-linked chitosan membranes permeated water more preferentially than NH4+ion. The DEDGE-cross-linked chitosan membranes showed higher water-permselectivity than the GA-cross-linked chitosan ones. Furthermore, pervaporation characteristics of these membranes are also discussed in detail from the viewpoint of membrane structures.
