Removal of nitrates from simulated ion-exchange brines with Paracoccus denitrificans encapsulated in Lentikats Biocatalyst

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F44555601%3A13520%2F11%3A43881994" target="_blank" >RIV/44555601:13520/11:43881994 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.sciencedirect.com/science/article/pii/S0011916411001597" target="_blank" >http://www.sciencedirect.com/science/article/pii/S0011916411001597</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.desal.2011.02.033" target="_blank" >10.1016/j.desal.2011.02.033</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Removal of nitrates from simulated ion-exchange brines with Paracoccus denitrificans encapsulated in Lentikats Biocatalyst

Popis výsledku v původním jazyce

A series of batch tests was carried out in order to optimize denitrification of brines from the regeneration of ion-exchange columns (12.14 g.L-1 Cl-, 1.35 g.L-1 SO42-, up to 2.86 g.L-1 N-NO3-) using Paracoccus denitrificans encapsulated in polyvinylalcohol matrix (Lentikats Biocatalyst, further LB). The elimination of nitrates followed zero-order kinetics, while the concentration of nitrite-intermediates peaked. Higher initial concentrations of nitrates resulted in faster denitrification. Higher testedconcentrations of salts did not affect the denitrification rate. They did however cause significant advancing of the nitrite peaks to nitrates minimum. Maximum obtained activity of 1 kg of LB was N1000 mg of N-NO3- removed per hour and the efficiency ofnitrates removal exceeded 99%.Denitrification activity of the LB systematically decreased during the course of repetitive experiments due to a lack of nutrients within the brines, disabling any proliferation of the encapsulated microorga

Název v anglickém jazyce

Removal of nitrates from simulated ion-exchange brines with Paracoccus denitrificans encapsulated in Lentikats Biocatalyst

Popis výsledku anglicky

A series of batch tests was carried out in order to optimize denitrification of brines from the regeneration of ion-exchange columns (12.14 g.L-1 Cl-, 1.35 g.L-1 SO42-, up to 2.86 g.L-1 N-NO3-) using Paracoccus denitrificans encapsulated in polyvinylalcohol matrix (Lentikats Biocatalyst, further LB). The elimination of nitrates followed zero-order kinetics, while the concentration of nitrite-intermediates peaked. Higher initial concentrations of nitrates resulted in faster denitrification. Higher testedconcentrations of salts did not affect the denitrification rate. They did however cause significant advancing of the nitrite peaks to nitrates minimum. Maximum obtained activity of 1 kg of LB was N1000 mg of N-NO3- removed per hour and the efficiency ofnitrates removal exceeded 99%.Denitrification activity of the LB systematically decreased during the course of repetitive experiments due to a lack of nutrients within the brines, disabling any proliferation of the encapsulated microorga

Druh

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

CEP obor

AA - Filosofie a náboženství

OECD FORD obor

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Projekt

<a href="/cs/project/1M0554" target="_blank" >1M0554: Pokročilé sanační technologie a procesy</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2011

Kód důvěrnosti údajů

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

Název periodika

Desalination

ISSN

0011-9164

e-ISSN

—

Svazek periodika

275

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

5

Strana od-do

82-86

Kód UT WoS článku

000292584900010

EID výsledku v databázi Scopus

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