Kombinace iontové výměny a elektrochemické redukce dusičnanů v procesu denitrifikace pitné vody.Část II: Elektrochemické zpracování použitého regeneračního roztoku.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F04%3A00011641" target="_blank" >RIV/60461373:22310/04:00011641 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

A Combination of Ion Exchange and Electrochemical Reduction for Nitrate Removal from Drinking Water. Part II: Electrochemical Treatment of a Spent Regenerant Solution.

Popis výsledku v původním jazyce

The process of selective nitrate removal from drinking water by means of ion exchange was studied. A commercial strong base anion exchanger with [triethylammonium]-N+Et3 functional groups was used in the bicarbonate (HCO3-) and [carbonate] CO32- form. The aim of this study was to optimize ion-exchanger regeneration in view of the subsequent electrochemical reduction of nitrates in the spent regenerant solution. The effects of ion-exchanger form, concentration of regenerant solution, and presence of nitrates, chlorides, and sulphates in the regenerant solution were studied. The strong base anion exchanger in HCO3- form that was investigated was able to treat 270 bed volumes of model water solution containing 124-mg dm-3 nitrates. To achieve adequate regeneration of the saturated anion exchanger it is necessary to use approximately 30 bed volumes of fresh 1-M [sodium bicarbonate] NaHCO3 regenerant solution. The presence of residual 50 mg dm-3 nitrates in the regenerant solution, treated

Název v anglickém jazyce

A Combination of Ion Exchange and Electrochemical Reduction for Nitrate Removal from Drinking Water. Part II: Electrochemical Treatment of a Spent Regenerant Solution.

Popis výsledku anglicky

The process of selective nitrate removal from drinking water by means of ion exchange was studied. A commercial strong base anion exchanger with [triethylammonium]-N+Et3 functional groups was used in the bicarbonate (HCO3-) and [carbonate] CO32- form. The aim of this study was to optimize ion-exchanger regeneration in view of the subsequent electrochemical reduction of nitrates in the spent regenerant solution. The effects of ion-exchanger form, concentration of regenerant solution, and presence of nitrates, chlorides, and sulphates in the regenerant solution were studied. The strong base anion exchanger in HCO3- form that was investigated was able to treat 270 bed volumes of model water solution containing 124-mg dm-3 nitrates. To achieve adequate regeneration of the saturated anion exchanger it is necessary to use approximately 30 bed volumes of fresh 1-M [sodium bicarbonate] NaHCO3 regenerant solution. The presence of residual 50 mg dm-3 nitrates in the regenerant solution, treated

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CG - Elektrochemie

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2004

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Water Environment Research

ISSN

1061-4303

e-ISSN

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Svazek periodika

76

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

7

Strana od-do

2691-2698

Kód UT WoS článku

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EID výsledku v databázi Scopus

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