Effect of feed temperature on concentration polarization and efficiency of reverse osmosis systems

The objective of the present study was to investigate the effect of temperature in order to improve the efficiency of the RO desalination process, and analyze the concentration polarization in spiral wound salinity water membrane elements. In this study the commercial reverse osmosis membrane (ce...

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Main Author: Taha Yaseen Khalaf
Format: Article
Language:English
Published: Al-Nahrain Journal for Engineering Sciences 2008-03-01
Series:مجلة النهرين للعلوم الهندسية
Subjects:
Online Access:https://nahje.com/index.php/main/article/view/506
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author Taha Yaseen Khalaf
author_facet Taha Yaseen Khalaf
author_sort Taha Yaseen Khalaf
collection DOAJ
description The objective of the present study was to investigate the effect of temperature in order to improve the efficiency of the RO desalination process, and analyze the concentration polarization in spiral wound salinity water membrane elements. In this study the commercial reverse osmosis membrane (cellulose acetate) have been used to treat medium concentrated (NaCl) salt solutions up to 1200 ppm. The results of the experiments show that the polymer membrane is very sensitive to changes in the feed temperature, and the concentration polarization variation with increase in flow rate and with decrease in temperature. The nonlinear equation obtained is solved numerically using the Marquardt method to determine various parameters. The k values estimated from the model show a marked variation that may be attributed to the presence of reflection coefficient in the Spiegler-Kedem model. It is suggested that the combined Spiegler- Kedem/film theory model may be the best method for establishing the mass transfer correlation for a given membrane of reverse osmosis and nanofiltration.
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spelling doaj.art-cc5d0841721f4417a50d108a614b8be82022-12-21T19:03:27ZengAl-Nahrain Journal for Engineering Sciencesمجلة النهرين للعلوم الهندسية2521-91542521-91622008-03-01111145152506Effect of feed temperature on concentration polarization and efficiency of reverse osmosis systemsTaha Yaseen Khalaf0Biomedical Dngineering Dept./ Al-Khwarizmi Engineering College / University Of BaghdadThe objective of the present study was to investigate the effect of temperature in order to improve the efficiency of the RO desalination process, and analyze the concentration polarization in spiral wound salinity water membrane elements. In this study the commercial reverse osmosis membrane (cellulose acetate) have been used to treat medium concentrated (NaCl) salt solutions up to 1200 ppm. The results of the experiments show that the polymer membrane is very sensitive to changes in the feed temperature, and the concentration polarization variation with increase in flow rate and with decrease in temperature. The nonlinear equation obtained is solved numerically using the Marquardt method to determine various parameters. The k values estimated from the model show a marked variation that may be attributed to the presence of reflection coefficient in the Spiegler-Kedem model. It is suggested that the combined Spiegler- Kedem/film theory model may be the best method for establishing the mass transfer correlation for a given membrane of reverse osmosis and nanofiltration.https://nahje.com/index.php/main/article/view/506reverse osmosis systemsconcentration polarization
spellingShingle Taha Yaseen Khalaf
Effect of feed temperature on concentration polarization and efficiency of reverse osmosis systems
مجلة النهرين للعلوم الهندسية
reverse osmosis systems
concentration polarization
title Effect of feed temperature on concentration polarization and efficiency of reverse osmosis systems
title_full Effect of feed temperature on concentration polarization and efficiency of reverse osmosis systems
title_fullStr Effect of feed temperature on concentration polarization and efficiency of reverse osmosis systems
title_full_unstemmed Effect of feed temperature on concentration polarization and efficiency of reverse osmosis systems
title_short Effect of feed temperature on concentration polarization and efficiency of reverse osmosis systems
title_sort effect of feed temperature on concentration polarization and efficiency of reverse osmosis systems
topic reverse osmosis systems
concentration polarization
url https://nahje.com/index.php/main/article/view/506
work_keys_str_mv AT tahayaseenkhalaf effectoffeedtemperatureonconcentrationpolarizationandefficiencyofreverseosmosissystems