Jump to main content
US EPA
United States Environmental Protection Agency
Search
Search
Main menu
Environmental Topics
Laws & Regulations
About EPA
Health & Environmental Research Online (HERO)
Contact Us
Print
Feedback
Export to File
Search:
This record has one attached file:
Add More Files
Attach File(s):
Display Name for File*:
Save
Citation
Tags
HERO ID
1949628
Reference Type
Journal Article
Title
Kinetic analysis of coupled transport of nitrite ions through liquid membranes at different temperatures
Author(s)
Demircioglu, N; Levent, M; Kobya, M; Topcu, N
Year
2000
Is Peer Reviewed?
0
Journal
Filtration and Separation
ISSN:
0015-1882
Publisher
Elsevier BV
Location
OXFORD
Volume
37
Issue
3
Page Numbers
51-56
Language
English
DOI
10.1016/S0015-1882(00)88505-5
Web of Science Id
WOS:000086488300007
Abstract
Non-steady state kinetics of the coupled transport of nitrite (NO2-) ions through liquid membranes (n-hexane 85% + chloroform 15%) containing tetraoctylammonium chloride as a carrier was examined at temperatures ranging from 273-308 degrees K. In this study, the, influence of temperature on the kinetic parameters (k(1d), k(2m), k(2a), t(max), R-m(max), J(d)(max), J(a)(max)) was investigated. The membrane entrance (k(1d)) and exit rates (k(2m), k(2a)) were increased with temperature. For maximum membranes entrance and exit fluxes, the activation energies were calculated from the slopes of the two linear relationships: E-ad = 6.62 kcal/mol and E-aa = 6.63 kcal/mol, respectively. The values of the calculated activation energy indicate that the process is diffusionally controlled.
Tags
IRIS
•
Nitrate/Nitrite
Supplemental LitSearch Update 1600-2015
WoS
New to project
Home
Learn about HERO
Using HERO
Search HERO
Projects in HERO
Risk Assessment
Transparency & Integrity