Removal of pesticides from water combining low pressure UV photolysis with nanofiltration

Sandra Sanches; Ana I. Penetra; Alexandre Mourão Rodrigues; Vítor Vale Cardoso; Elisabete Carvalho N. Ferreira; Maria João Benoliel; Maria Teresa Barreto Goulão Crespo; João Paulo Serejo Goulão Crespo; Vanessa Ranhada Pereira

doi:10.1016/j.seppur.2013.04.044

Removal of pesticides from water combining low pressure UV photolysis with nanofiltration

Sandra Sanches, Ana I. Penetra, Alexandre Mourão Rodrigues, Vítor Vale Cardoso, Elisabete Carvalho N. Ferreira, Maria João Benoliel, Maria Teresa Barreto Goulão Crespo, João Paulo Serejo Goulão Crespo, Vanessa Ranhada Pereira

Research output: Contribution to journal › Article › peer-review

31 Citations (Scopus)

Abstract

The combination of low pressure ultraviolet photolysis and nanofiltration proved to be extremely efficient for the treatment of drinking water since several emerging pesticides spiked in surface water were found to be highly removed. The concentration of the by-products formed and estrogenic activity of the nanofiltration permeate was found to be always very low during operation, showing that the by-products formed during photolysis were efficiently retained by the nanofiltration process. Moreover, the need to further treat/dispose the retentate and the respective costs are also likely to decrease. The combined process is promising to remove the selected micropollutants and formed by-products while reducing the chlorine doses needed to achieve water disinfection, therefore decreasing also the formation of disinfection by-products.

Original language	English
Pages (from-to)	73-82
Journal	Separation and Purification Technology
Volume	115
DOIs	https://doi.org/10.1016/j.seppur.2013.04.044
Publication status	Published - 30 Aug 2013

Keywords

Emerging micropollutants
Estrogenic activity
Low pressure UV photolysis
Nanofiltration
Titanium dioxide photocatalysis
Water treatment

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Sanches, Sandra ; Penetra, Ana I. ; Rodrigues, Alexandre Mourão ; Cardoso, Vítor Vale ; Ferreira, Elisabete Carvalho N. ; Benoliel, Maria João ; Goulão Crespo, Maria Teresa Barreto ; Crespo, João Paulo Serejo Goulão ; Pereira, Vanessa Ranhada. / Removal of pesticides from water combining low pressure UV photolysis with nanofiltration. In: Separation and Purification Technology. 2013 ; Vol. 115. pp. 73-82.

@article{b42e649903944a33b869b86948f2c257,

title = "Removal of pesticides from water combining low pressure UV photolysis with nanofiltration",

abstract = "The combination of low pressure ultraviolet photolysis and nanofiltration proved to be extremely efficient for the treatment of drinking water since several emerging pesticides spiked in surface water were found to be highly removed. The concentration of the by-products formed and estrogenic activity of the nanofiltration permeate was found to be always very low during operation, showing that the by-products formed during photolysis were efficiently retained by the nanofiltration process. Moreover, the need to further treat/dispose the retentate and the respective costs are also likely to decrease. The combined process is promising to remove the selected micropollutants and formed by-products while reducing the chlorine doses needed to achieve water disinfection, therefore decreasing also the formation of disinfection by-products.",

keywords = "Low pressure UV photolysis, Nanofiltration, Water treatment, Estrogenic activity, Titanium dioxide photocatalysis, Emerging micropollutants, Emerging micropollutants, Estrogenic activity, Low pressure UV photolysis, Nanofiltration, Titanium dioxide photocatalysis, Water treatment",

author = "Sandra Sanches and Penetra, {Ana I.} and Rodrigues, {Alexandre Mour{\~a}o} and Cardoso, {V{\'i}tor Vale} and Ferreira, {Elisabete Carvalho N.} and Benoliel, {Maria Jo{\~a}o} and {Goul{\~a}o Crespo}, {Maria Teresa Barreto} and Crespo, {Jo{\~a}o Paulo Serejo Goul{\~a}o} and Pereira, {Vanessa Ranhada}",

note = "Financial support from Fundacao para a Ciencia e a Tecnologia - through the project PTDC/AMB/66024/2006, the grant PEst-OE/EQB/LA0004/2011, and the fellowships BPD/26990/2006 and BD/72244/2010 is gratefully acknowledged.",

year = "2013",

month = aug,

day = "30",

doi = "10.1016/j.seppur.2013.04.044",

language = "English",

volume = "115",

pages = "73--82",

journal = "Separation and Purification Technology",

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Removal of pesticides from water combining low pressure UV photolysis with nanofiltration. / Sanches, Sandra; Penetra, Ana I.; Rodrigues, Alexandre Mourão; Cardoso, Vítor Vale; Ferreira, Elisabete Carvalho N.; Benoliel, Maria João; Goulão Crespo, Maria Teresa Barreto ; Crespo, João Paulo Serejo Goulão ; Pereira, Vanessa Ranhada.

In: Separation and Purification Technology, Vol. 115, 30.08.2013, p. 73-82.

Research output: Contribution to journal › Article › peer-review

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AU - Penetra, Ana I.

AU - Rodrigues, Alexandre Mourão

AU - Cardoso, Vítor Vale

AU - Ferreira, Elisabete Carvalho N.

AU - Benoliel, Maria João

AU - Goulão Crespo, Maria Teresa Barreto

AU - Crespo, João Paulo Serejo Goulão

AU - Pereira, Vanessa Ranhada

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N2 - The combination of low pressure ultraviolet photolysis and nanofiltration proved to be extremely efficient for the treatment of drinking water since several emerging pesticides spiked in surface water were found to be highly removed. The concentration of the by-products formed and estrogenic activity of the nanofiltration permeate was found to be always very low during operation, showing that the by-products formed during photolysis were efficiently retained by the nanofiltration process. Moreover, the need to further treat/dispose the retentate and the respective costs are also likely to decrease. The combined process is promising to remove the selected micropollutants and formed by-products while reducing the chlorine doses needed to achieve water disinfection, therefore decreasing also the formation of disinfection by-products.

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KW - Titanium dioxide photocatalysis

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