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Separation performance of the chitosan–glutaraldehyde cryogel (glu, 0.2 vol %) sample toward Tween-80 stabilized toluene-in-water emulsion (A,D) and SLS stabilized toluene-in-water emulsion (B,E), respectively. Optical images of separation of Tween-80 stabilized toluene-in-water emulsion before (C) and after (F) using the chitosan cryogel, respectively.
