Cation selective membrane dialysis for ammonia removal from solutions of high salinity

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F18%3A43915868" target="_blank" >RIV/60461373:22310/18:43915868 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/48910848:_____/18:N0000002

Výsledek na webu

<a href="http://iel.vscht.cz/index.html?http&&&iel.vscht.cz/abstracts/1803-4039-11-0001.htm" target="_blank" >http://iel.vscht.cz/index.html?http&&&iel.vscht.cz/abstracts/1803-4039-11-0001.htm</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3260/iel.2018.08.001" target="_blank" >10.3260/iel.2018.08.001</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Cation selective membrane dialysis for ammonia removal from solutions of high salinity

Popis výsledku v původním jazyce

Ammonia represents frequent pollutant of water. Therefore various wastewater treatment technologies to remove ammonia are used. The traditional method is based on bacteria that convert ammonia to nitrate and in the second step to nitrogen gas. In several cases biological treatment is not applicable due to high salinity or toxicity of waste water. Thus an alternative method must be applied. Ammonia can be removed or decomposed by several methods such as air-stripping, membrane separation, breakpoint chlorination, and electrochemical oxidation. The danger of undesired organic byproduct formation during chlorination process restrict its applicability. Some separation process is required for selective separation of NH4+ ions from polluted stream. For high salinity solutions the standard separation techniques as ion exchange, reverse osmosis or electrodialysis doesn’t have desired efficiency. The dialysis process use as driving force the concentration gradient. In the case of similar salinity of the both sides of ion selective membrane the only one transported item is the NH4+ ion. The dialysis process was therefore studied as potential separation step in ammonia removal technology designed for solution of high salinity. The rate of ammonia separation in dependence of NH4+ concentration was identified in lab scale dialyser equipped with cation selective membranes CMPES Ralex (Mega a.s.). Diluate and concentrate solutions of various concentrations were tested. It was proved that dialysis process is capable to separate NH4+ ions from solution of high salinity.

Název v anglickém jazyce

Cation selective membrane dialysis for ammonia removal from solutions of high salinity

Popis výsledku anglicky

Ammonia represents frequent pollutant of water. Therefore various wastewater treatment technologies to remove ammonia are used. The traditional method is based on bacteria that convert ammonia to nitrate and in the second step to nitrogen gas. In several cases biological treatment is not applicable due to high salinity or toxicity of waste water. Thus an alternative method must be applied. Ammonia can be removed or decomposed by several methods such as air-stripping, membrane separation, breakpoint chlorination, and electrochemical oxidation. The danger of undesired organic byproduct formation during chlorination process restrict its applicability. Some separation process is required for selective separation of NH4+ ions from polluted stream. For high salinity solutions the standard separation techniques as ion exchange, reverse osmosis or electrodialysis doesn’t have desired efficiency. The dialysis process use as driving force the concentration gradient. In the case of similar salinity of the both sides of ion selective membrane the only one transported item is the NH4+ ion. The dialysis process was therefore studied as potential separation step in ammonia removal technology designed for solution of high salinity. The rate of ammonia separation in dependence of NH4+ concentration was identified in lab scale dialyser equipped with cation selective membranes CMPES Ralex (Mega a.s.). Diluate and concentrate solutions of various concentrations were tested. It was proved that dialysis process is capable to separate NH4+ ions from solution of high salinity.

Druh

J_ost - Ostatní články v recenzovaných periodicích

CEP obor

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OECD FORD obor

10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)

Projekt

<a href="/cs/project/TA04020939" target="_blank" >TA04020939: Aplikace pokročilých elektrochemických systémů na čištění specifických odpadních vod s vysokou koncentrací amoniakálního dusíku</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

Ion Exchange Letters

ISSN

1803-4039

e-ISSN

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Svazek periodika

11

Číslo periodika v rámci svazku

1-2

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

4

Strana od-do

1-4

Kód UT WoS článku

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EID výsledku v databázi Scopus

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