Effect of feed temperature on the performance and properties of the NF270 membrane
Name
964669577-MIT.pdf
Description
Full printable version
Size
3.16 MB
Format
Adobe PDF
Checksum (MD5)
4ac1019f798ace8e70930bec4ec99e07
Author(s)
Bolaji, John O. (John Olaoluwa)
Advisor(s)
John H. Lienhard, V.
Date Issued
2016
Publisher
Massachusetts Institute of Technology
Abstract
An experimental study was done to explore the effect of feed water temperature on the properties and performance of nanofiltration membranes. The NF270 membrane was selected for this study, in which two temperatures of feed solution were passed through the membrane and water flux and salt rejection were measured. Results from fitting with experimental data show that water flux increased 23% and salt rejection changed minimally from 25°C to 40°C. A numerical fitting method used the experimental data to determine the parameters of the membrane: pore radius, effective active layer thickness, and volumetric charge density. From 25°C to 40°C, the fitted parameters showed a 29% increase in pore size, and an 84% increase in effective active layer thickness; volumetric charge density increased in magnitude by approximately 64%. Pre-compaction and pre-soaking the membrane in alcohol are two separate membrane pretreatment procedures that showed significant effects on the performance of the membrane.
Description
Thesis: S.B., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2016.
Cataloged from PDF version of thesis.
Includes bibliographical references (pages 35).
Subjects
Mechanical Engineering.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
Terms of Use
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