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Poly (Hexahydrotriazine) Membranes Prepared by Coupling Reaction Between Diamines and Aldehydes Read chapter Read first chapter

2017 | OriginalPaper | Chapter

12. Photo-Oxidation Treatment of the Reject Stream of a Nanofiltration Membrane System

Authors : Alma Chávez Mejía, Abraham Chávez Velasco, Paloma Zaragoza Sánchez, Blanca Jiménez Cisneros

Published in: Membranes

Publisher: Springer International Publishing

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Abstract

The treatment of reject water from a nanofiltration system by photo-oxidation with ultraviolet light and titanium dioxide (TiO2) showed that degradation efficiency of the organic micropollutants (OMPs) varied depending on the reaction time analyzed. Thus, compounds such as diclofenac and ibuprofen exhibited greater than 95 % degradation within the first 15 min, while less than 65 % of naproxen and gemfibrozil was degraded after 15 min of reaction time. Salicylic acid had the lowest degradation efficiency in 15 min (<45 %) of all of the compounds studied. In addition to radical recombination, suspended particles limit potential homogeneous illumination in the reaction system while the presence of organic material causes parallel hydroxyl radical-consuming reactions, which may be responsible for low degradation efficiencies under these conditions.

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previous chapter Biofouling Studies on Thin Film Composite Membranes for Reverse Osmosis Desalination Processes
next chapter Cleaning Strategies for a Membrane Bioreactor to Produce Permeate with a Quality Suitable for Indirect Reuse
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Metadata
Title
Photo-Oxidation Treatment of the Reject Stream of a Nanofiltration Membrane System
Authors
Alma Chávez Mejía
Abraham Chávez Velasco
Paloma Zaragoza Sánchez
Blanca Jiménez Cisneros
Copyright Year
2017
Book
Membranes

Print ISBN: 978-3-319-45314-9

Electronic ISBN: 978-3-319-45315-6

Copyright Year: 2017

DOI
https://doi.org/10.1007/978-3-319-45315-6_12

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