Adaptation of flocculent anammox culture to low temperature by cold shock: long-term response of the microbial population

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22320%2F21%3A43921997" target="_blank" >RIV/60461373:22320/21:43921997 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60461373:22330/21:43921997

Výsledek na webu

<a href="https://www.tandfonline.com/doi/full/10.1080/09593330.2021.1950842" target="_blank" >https://www.tandfonline.com/doi/full/10.1080/09593330.2021.1950842</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1080/09593330.2021.1950842" target="_blank" >10.1080/09593330.2021.1950842</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Adaptation of flocculent anammox culture to low temperature by cold shock: long-term response of the microbial population

Popis výsledku v původním jazyce

Partial nitritation-anammox (PN/A) process will substantially reduce the costs for the removal of nitrogen in the mainstream of municipal sewage. However, one of the mainstream PN/A challenges is to reduce the time necessary for the adaptation of anammox bacteria to lower temperatures in mild climates. In this study, we exposed anammox flocculent culture to cold shocks [35°C → 5°C (8 h) → 15°C] and evaluated long-term cold shock response. Over a post-shock period of 40 d at 15°C, the nitrogen removal rates in the shocked culture were significantly higher compared to control, with maximum rates up to 0.082 and 0.033 kg-N/kg-VSS/d or 0.164 and 0.076 kg-N/m3/d, for shocked culture and control, respectively. In the corresponding semi-batch cycles, the shocked culture was on average 136 ± 101% more active than the control, due to the negative effect of cold shock on side populations and more active anammox cells. Per FISH, Ca. Brocadia anammoxidans and Ca. Scalindua survived the shock and remained present throughout. Thus, both anammox microorganisms seem to respond favourably to cold shocks. In sum, we provide further evidence that cold shocks accelerate the adaptation of anammox to the mainstream of municipal WWTPs. Further, for the first time, we report the long-term adaptive response of anammox to cold shocks.

Název v anglickém jazyce

Adaptation of flocculent anammox culture to low temperature by cold shock: long-term response of the microbial population

Popis výsledku anglicky

Partial nitritation-anammox (PN/A) process will substantially reduce the costs for the removal of nitrogen in the mainstream of municipal sewage. However, one of the mainstream PN/A challenges is to reduce the time necessary for the adaptation of anammox bacteria to lower temperatures in mild climates. In this study, we exposed anammox flocculent culture to cold shocks [35°C → 5°C (8 h) → 15°C] and evaluated long-term cold shock response. Over a post-shock period of 40 d at 15°C, the nitrogen removal rates in the shocked culture were significantly higher compared to control, with maximum rates up to 0.082 and 0.033 kg-N/kg-VSS/d or 0.164 and 0.076 kg-N/m3/d, for shocked culture and control, respectively. In the corresponding semi-batch cycles, the shocked culture was on average 136 ± 101% more active than the control, due to the negative effect of cold shock on side populations and more active anammox cells. Per FISH, Ca. Brocadia anammoxidans and Ca. Scalindua survived the shock and remained present throughout. Thus, both anammox microorganisms seem to respond favourably to cold shocks. In sum, we provide further evidence that cold shocks accelerate the adaptation of anammox to the mainstream of municipal WWTPs. Further, for the first time, we report the long-term adaptive response of anammox to cold shocks.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

20801 - Environmental biotechnology

Projekt

<a href="/cs/project/GA17-25781S" target="_blank" >GA17-25781S: Fyziologická reakce anammox bakterií na studené teplotní šoky</a><br>

Návaznosti

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

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

Environmental Technology

ISSN

0959-3330

e-ISSN

0959-3330

Svazek periodika

2021

Číslo periodika v rámci svazku

07/2021

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

"nestrankovano"

Kód UT WoS článku

000673037500001

EID výsledku v databázi Scopus

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