Water and solute transport through cellulose acetate reverse osmosis membranes

✍ Scribed by G. Jonsson; C.E. Boesen

• Publisher: Elsevier Science
• Year: 1975
• Tongue: English
• Weight: 985 KB
• Volume: 17
• Category: Article
• ISSN: 0011-9164
• DOI: 10.1016/s0011-9164(00)84054-0

✦ Synopsis

Re\ersc

amosis dat,l on txco difli-rent cdlulo~e acetate mernbrancs using w\en organic solutes of varyng molecular \ietpht have been obtalncd. A combined viscous-tlo\ and fractional model i:, presented and used to estimate the maximum retention. the friction bcween solute and membrane, the distribution coetliclent for solute and the pore radiw The calculattxi values of the m.iximum retention and distribution cocfficirnt habe been compared $1 ith the C-'cre-Fawn equation. For the more open membrane these are tn god agreement. The tighter one. ho\ever. sho\s a greater interactwn bet\veen wlute and membrane than prcdlcted by the Faxen equatton. Some data on two-solute systems are presented and sho\n to give \arintlon in the retention. \hich can bc explained from the con\ection term. JL -volumetric flow per unit membrane area. cmj'sec Ji -flux of component i. s!cm2-scc K -distribution coeffkient of solute between pore fluid and bulk solution ,\Ii -molecular wei_ght of component i, g/mole