title: Towards Acid-Tolerated Ethanol Dehydration: Chitosan-Based Mixed Matrix Membranes Containing Cyano-Bridged Coordination Polymer Nanoparticles.
abstract: Prussian blue (PB) nanoparticles, one of many cyano-bridged coordination polymers, are successfully incorporated into chitosan (CS) polymer to prepare PB/CS mixed matrix membranes (MMMs). The PB nanoparticles are uniformly distributed in the MMMs without the collapse of the original PB structure. As-prepared PB/CS MMMs are used for ethanol dehydration at 25 °C in the pervaporation process. The effect of loading PB in CS matrix on pervaporation performance is carefully investigated. The PB/CS membrane with 30 wt% PB loading shows the best performance with a permeate flux of 614 g. m-2 . h-1 and a separation factor of 1472. The pervaporation using our PB/CS membranes exhibits outstanding performance in comparison with the previously reported CS-based membranes and MMMs. Furthermore, the addition of PB allows PB/CS MMMs to be tolerant of acidic environment. The present work demonstrates good pervaporation performance of PB/CS MMMs for the separation of an ethanol/water (90:10 in wt%) solution. Our new system provides an opportunity for dehydration of bioethanol in the future.
authors.forename: C-W
authors.initials: CW
authors.lastname: Wu
authors.forename: Chao-Hsiang
authors.initials: CH
authors.lastname: Kang
authors.forename: Yi-Feng
authors.initials: YF
authors.lastname: Lin
authors.forename: Kuo-Lun
authors.initials: KL
authors.lastname: Tung
authors.forename: Yu-Heng
authors.initials: YH
authors.lastname: Deng
authors.forename: Tansir
authors.initials: T
authors.lastname: Ahamad
authors.forename: Saad M
authors.initials: SM
authors.lastname: Alshehri
authors.forename: Norihiro
authors.initials: N
authors.lastname: Suzuki
authors.forename: Yusuke
authors.initials: Y
authors.lastname: Yamauchi
mesh_terms: D048271:Chitosan / Q000737:chemistry*; D003890:Desiccation / Q000379:methods; D000431:Ethanol / Q000737:chemistry / Q000302:isolation & purification*; D005295:Ferrocyanides / Q000737:chemistry*; D008422:Materials Testing; D008567:Membranes, Artificial; D053758:Nanoparticles / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry; D014867:Water / Q000737:chemistry*
chemical_list: D005295:Ferrocyanides; D008567:Membranes, Artificial; D011108:Polymers; D014867:Water; D000431:Ethanol; D048271:Chitosan; C000170:ferric ferrocyanide