|
EPrints@IIT Delhi >
Faculty Research Publicatons >
Chemical Engineering >
Please use this identifier to cite or link to this item:
http://hdl.handle.net/2074/327
|
| Title: | Estimation of mass transfer coefficient using a combined nonlinear membrane transport and film theory model |
| Authors: | Murthy, Z V P
Gupta, Sharad K |
| Keywords: | Mass transfer coefficient
Spiegler-Kedem model
Film theory |
| Issue Date: | 1997 |
| Citation: | Desalination, 109(1), 39-49 |
| Abstract: | The problem of estimating mass transfer coefficient (k) in reverse osmosis is very important as can be seen from a number of studies reported in the literature. The methods employed are (a) direct measurements, using optical or microelectrode measurements; (b) indirect measurements, in which the true rejection is calculated by extrapolation
to infinite feed circulation; and (c) indirect measurements, in which a concentration polarization model combined with a membrane transport model is used for mass transfer coefficient calculation. In the present work, the reverse osmosis experiments were conducted in a flat disk cell to get separation data using a NaCl-water system and cellulose
acetate membrane. To analyze data, method (c) is used with two membrane transport models, the nonlinear Spiegler-Kedem model and the solution-diffusion model, to estimate the membrane transport parameters and k, simul-taneously. The nonlinear equation obtained is solved numerically using the Box-Kanemasu m... |
| URI: | http://eprint.iitd.ac.in/dspace/handle/2074/327 |
| Appears in Collections: | Chemical Engineering
|
Files in This Item:
| File |
Description |
Size | Format |
|---|
| murthyest97.pdf | | 663Kb | Adobe PDF | View/Open |
|
Show full item record
All items in DSpace are protected by copyright, with all rights reserved.
|
