Pembuatan Membran Nanokomposit Kitosan - Zeolit Alam Sarulla Untuk Pemisahan Campuran Etanol-Air Secara Pervaporasi

Abstract

The study is aimed to synthesis chitosan membrane from shrim shell waste and modification of membrane by additing natural nanozeolite Sanilla by varying the composition of nanozeolite toward the membrane performance. The membrane obtained is determined Flux and selectivity on the separation of ethanol-water mixture by pervaporation. The chitosan used has a degree of deacetylation of 84. 7% and natural nanozeolite Sarulla (@ZAS) used has a @ZAS aktivated at 400°C for 4 hours and data XRD data showec! that the zeolite which usd to resemble modemit. The result of SEM showed that the membrane surface is relatively smooth, homogeneous and fine pores evenly dispersed, while the Ch-@ZAS membrane surface looks uneven, heterogeneous and rough surface due the zeolite dispersed. These results are supported by IR data which showed the occurrence of mixing physical and chemical interactions between chitosan and @ZAS. The swelling and performance (flux and selectivity) of membrane generally increases with the addition of @ZAS composition to the chitosan matrix. The optimum composition membrane obtained addition of 0.30 g @ZAS (membrane Ch@ ZAS_ 4). The laboratorium Scala tests showed that the nano composite membrane chitosan natural zeolite Sanilla, which is synthesized at optimum composition, with the feed ethanol at composition of 98% w/w and 65°C, has the highest fermentation flux of water and totality were 0.98 Kg/m2 hour and 1.05 Kg/m2 hour respectively, while the highest selectivity was 1168. This study has also able to increase the concentration of ethanol to 99.22% (w/w).