Removal of nitrates from potable water by ion exchange

E. Korngold

doi:10.1007/BF00572386

Removal of nitrates from potable water by ion exchange

E. Korngold

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

17 Scopus citations

Abstract

The feasibility of removing nitrates from otherwise potable water by means of anion exchange was investigated. Candidate anion exchange resins had to demonstrate a higher affinity for nitrate ions than for the other ions present (Cl^-, HCO₃^-). The distribution factor between chloride and nitrate was investigated with the anion exchange resin Amberlite-400. In studies of column operation it was found that sea water was as effective as NaCl for regeneration. The nitrate ion capacity was proportional to the nitrate ion concentration and to the TDS in the feed. Nitrate ion leakage was greater with lower levels of regeneration. An operational capacity for nitrate of 0.3 to 0.4 me ml^-1 was found; this capacity was not significantly affected by the presence of sulfate ion in low concentration (2 me 1^-1).

Original language	English
Pages (from-to)	15-22
Number of pages	8
Journal	Water, Air, and Soil Pollution
Volume	2
Issue number	1
DOIs	https://doi.org/10.1007/BF00572386
State	Published - 1 Mar 1973
Externally published	Yes

ASJC Scopus subject areas

Environmental Engineering
Environmental Chemistry
Ecological Modeling
Water Science and Technology
Pollution

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10.1007/BF00572386

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abstract = "The feasibility of removing nitrates from otherwise potable water by means of anion exchange was investigated. Candidate anion exchange resins had to demonstrate a higher affinity for nitrate ions than for the other ions present (Cl-, HCO3-). The distribution factor between chloride and nitrate was investigated with the anion exchange resin Amberlite-400. In studies of column operation it was found that sea water was as effective as NaCl for regeneration. The nitrate ion capacity was proportional to the nitrate ion concentration and to the TDS in the feed. Nitrate ion leakage was greater with lower levels of regeneration. An operational capacity for nitrate of 0.3 to 0.4 me ml-1 was found; this capacity was not significantly affected by the presence of sulfate ion in low concentration (2 me 1-1).",

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N2 - The feasibility of removing nitrates from otherwise potable water by means of anion exchange was investigated. Candidate anion exchange resins had to demonstrate a higher affinity for nitrate ions than for the other ions present (Cl-, HCO3-). The distribution factor between chloride and nitrate was investigated with the anion exchange resin Amberlite-400. In studies of column operation it was found that sea water was as effective as NaCl for regeneration. The nitrate ion capacity was proportional to the nitrate ion concentration and to the TDS in the feed. Nitrate ion leakage was greater with lower levels of regeneration. An operational capacity for nitrate of 0.3 to 0.4 me ml-1 was found; this capacity was not significantly affected by the presence of sulfate ion in low concentration (2 me 1-1).

AB - The feasibility of removing nitrates from otherwise potable water by means of anion exchange was investigated. Candidate anion exchange resins had to demonstrate a higher affinity for nitrate ions than for the other ions present (Cl-, HCO3-). The distribution factor between chloride and nitrate was investigated with the anion exchange resin Amberlite-400. In studies of column operation it was found that sea water was as effective as NaCl for regeneration. The nitrate ion capacity was proportional to the nitrate ion concentration and to the TDS in the feed. Nitrate ion leakage was greater with lower levels of regeneration. An operational capacity for nitrate of 0.3 to 0.4 me ml-1 was found; this capacity was not significantly affected by the presence of sulfate ion in low concentration (2 me 1-1).

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Removal of nitrates from potable water by ion exchange

Abstract

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