Pervaporation of Ketone Organic Compounds from Their Aqueous Solution:Silicalite-1 Zeolite Membrane

摘要

Volatile organic compounds of ketone are separated by pervaporation using a silicalite-1 zeolite membrane.As a feed concentration of acetone increased from 0.8 wt% to 20 wt% and a feed concentration of MEK(methyl ethyl ketone)increased from 1 wt% to 15 wt%,the permeation flux of acetone increased from 110 to 480 g/m2 o h and the MEK permeation flux also increased from 30 to 80 g/m~2 centre dot h.As a feed concentration of acetone and MEK(methyl ethyl ketone)increased in the same concentration range,a selectivity of acetone decreased from 140 to 40 and a selectivity of MEK decreased from 85 to 10.It was found that the permeation flux of acetone was 4-6 times higher than that of MEK and the selectivity was 2-4 times higher than that of MEK at a same feed concentration.