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Cortés-Francisco, N.* ; Harir, M. ; Lucio, M. ; Ribera, G.* ; Martínez-Lladó, X.* ; Rovira, M.* ; Schmitt-Kopplin, P. ; Hertkorn, N. ; Caixach, J.*

High-field FT-ICR mass spectrometry and NMR spectroscopy to characterize DOM removal through a nanofiltration pilot plant.

Water Res. 67, 154-165 (2014)
DOI
Open Access Green as soon as Postprint is submitted to ZB.
Ultrahigh resolution Fourier transform ion cyclotron mass spectrometry and nuclear magnetic resonance spectroscopy were combined to evaluate the molecular changes of dissolved organic matter (DOM) through an ultrafiltration-nanofiltration (UF-NF) pilot plant, using two dissimilar NF membranes tested in parallel. The sampling was performed on seven key locations within the pilot plant: pretreated water, UF effluent, UF effluent after addition of reagents, permeate NF 1, permeate NF 2, brine NF 1 and brine NF 2, during two sampling campaigns. The study showed that there is no significant change in the nature of DOM at molecular level, when the water was treated with UF and/or with the addition of sodium metabisulfite and antiscaling agents. However, enormous decrease of DOM concentration was observed when the water was treated on the NF membranes. The NF process preferentially removed compounds with higher oxygen and nitrogen content (more hydrophilic compounds), whereas molecules with longer pure aliphatic chains and less content of oxygen were the ones capable of passing through the membranes. Moreover, slight molecular selectivity between the two NF membranes was also observed.
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Publication type Article: Journal article
Document type Scientific Article
Keywords Dbps ; Dissolved Organic Matter ; Drinking Water Treatment Plant ; Ft-icr Mass Spectrometry ; Nmr Spectroscopy ; Nanofiltration
ISSN (print) / ISBN 0043-1354
e-ISSN 1879-2448
Journal Water Research
Quellenangaben Volume: 67, Issue: , Pages: 154-165 Article Number: , Supplement: ,
Publisher Elsevier
Publishing Place Amsterdam [u.a.] ; Jena [u.a.]
Reviewing status Peer reviewed