N-nitrosodimethylamine (NDMA) precursors leach from nanofiltration membranes

Mahmut Selim Ersan; David A. Ladner; Tanju Karanfil

doi:10.1021/acs.estlett.5b00015

N-nitrosodimethylamine (NDMA) precursors leach from nanofiltration membranes

Mahmut Selim Ersan, David A. Ladner, Tanju Karanfil

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

16 Scopus citations

Abstract

Membrane filtration processes have been widely used as effective means of providing safe and reliable water for both potable and nonpotable purposes. In our laboratory, we have observed that N-nitrosodimethylamine (NDMA) precursors leach from virgin membranes. Therefore, in this study, we aimed to examine (i) the potential leaching of NDMA precursors from different types of nanofiltration membranes and (ii) membrane cleaning techniques using different types of background solutions to prevent the leaching. The results showed that for three different types of nanofiltration membranes, leaching of high levels of NDMA precursors (∼180-450 ng/L) was observed. Leaching continued even after membranes had been washed with ∼3900 L of distilled deionized water/m². Among various cleaning techniques, washing the membrane with a 1 mg/L Cl₂ solution was found to be the most effective for reducing the extent of NDMA precursor leaching.

Original language	English (US)
Pages (from-to)	66-69
Number of pages	4
Journal	Environmental Science and Technology Letters
Volume	2
Issue number	3
DOIs	https://doi.org/10.1021/acs.estlett.5b00015
State	Published - Mar 10 2015
Externally published	Yes

ASJC Scopus subject areas

Environmental Chemistry
Ecology
Water Science and Technology
Waste Management and Disposal
Pollution
Health, Toxicology and Mutagenesis

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title = "N-nitrosodimethylamine (NDMA) precursors leach from nanofiltration membranes",

abstract = "Membrane filtration processes have been widely used as effective means of providing safe and reliable water for both potable and nonpotable purposes. In our laboratory, we have observed that N-nitrosodimethylamine (NDMA) precursors leach from virgin membranes. Therefore, in this study, we aimed to examine (i) the potential leaching of NDMA precursors from different types of nanofiltration membranes and (ii) membrane cleaning techniques using different types of background solutions to prevent the leaching. The results showed that for three different types of nanofiltration membranes, leaching of high levels of NDMA precursors (∼180-450 ng/L) was observed. Leaching continued even after membranes had been washed with ∼3900 L of distilled deionized water/m2. Among various cleaning techniques, washing the membrane with a 1 mg/L Cl2 solution was found to be the most effective for reducing the extent of NDMA precursor leaching.",

author = "Ersan, {Mahmut Selim} and Ladner, {David A.} and Tanju Karanfil",

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doi = "10.1021/acs.estlett.5b00015",

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AU - Ersan, Mahmut Selim

AU - Ladner, David A.

AU - Karanfil, Tanju

PY - 2015/3/10

Y1 - 2015/3/10

N2 - Membrane filtration processes have been widely used as effective means of providing safe and reliable water for both potable and nonpotable purposes. In our laboratory, we have observed that N-nitrosodimethylamine (NDMA) precursors leach from virgin membranes. Therefore, in this study, we aimed to examine (i) the potential leaching of NDMA precursors from different types of nanofiltration membranes and (ii) membrane cleaning techniques using different types of background solutions to prevent the leaching. The results showed that for three different types of nanofiltration membranes, leaching of high levels of NDMA precursors (∼180-450 ng/L) was observed. Leaching continued even after membranes had been washed with ∼3900 L of distilled deionized water/m2. Among various cleaning techniques, washing the membrane with a 1 mg/L Cl2 solution was found to be the most effective for reducing the extent of NDMA precursor leaching.

AB - Membrane filtration processes have been widely used as effective means of providing safe and reliable water for both potable and nonpotable purposes. In our laboratory, we have observed that N-nitrosodimethylamine (NDMA) precursors leach from virgin membranes. Therefore, in this study, we aimed to examine (i) the potential leaching of NDMA precursors from different types of nanofiltration membranes and (ii) membrane cleaning techniques using different types of background solutions to prevent the leaching. The results showed that for three different types of nanofiltration membranes, leaching of high levels of NDMA precursors (∼180-450 ng/L) was observed. Leaching continued even after membranes had been washed with ∼3900 L of distilled deionized water/m2. Among various cleaning techniques, washing the membrane with a 1 mg/L Cl2 solution was found to be the most effective for reducing the extent of NDMA precursor leaching.

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N-nitrosodimethylamine (NDMA) precursors leach from nanofiltration membranes

Abstract

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