Cold shocks of Anammox biofilm stimulate nitrogen removal at low temperatures

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22320%2F17%3A43913549" target="_blank" >RIV/60461373:22320/17:43913549 - isvavai.cz</a>

Výsledek na webu

<a href="http://onlinelibrary.wiley.com/doi/10.1002/btpr.2570/full" target="_blank" >http://onlinelibrary.wiley.com/doi/10.1002/btpr.2570/full</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/btpr.2570" target="_blank" >10.1002/btpr.2570</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Cold shocks of Anammox biofilm stimulate nitrogen removal at low temperatures

Popis výsledku v původním jazyce

The adaptation of Anammox (ANaerobic AMMonium OXidation) to low temperatures (10-15°C) is crucial for sustaining energy-efficient nitrogen removal from the mainstream of municipal wastewater. But, current adaptation methods take months or even years. To speed up the adaption of Anammox to low temperatures, this study describes a new approach: exposing Anammox microorganisms to an abrupt temporary reduction of temperature, i.e., cold shock. Anammox biomass in a moving bed biofilm reactor was subjected to three consecutive cold shocks (reduction from 24±2 to 5.0±0.2°C), each taking eight hours. Before the cold shocks, Anammox activity determined in ex situ tests using the temperature range of 12.5-19.5°C was 0.005-0.015 kg-N kg-VSS -1 day -1 . Cold shocks increased the activity of Anammox at 10°C to 0.054 kg-N kg-VSS -1 day -1 after the third shock, which is similar to the highest activities obtained for cold-enriched or adapted Anammox reported in the literature (0.080 kg-N kg-VSS -1 day -1 ). Fluorescence in situ hybridization analysis showed that Ca. Brocadia fulgida was the dominant species. Thus, cold shocks are an intriguing new strategy for the adaptation of Anammox to low temperature.

Název v anglickém jazyce

Cold shocks of Anammox biofilm stimulate nitrogen removal at low temperatures

Popis výsledku anglicky

The adaptation of Anammox (ANaerobic AMMonium OXidation) to low temperatures (10-15°C) is crucial for sustaining energy-efficient nitrogen removal from the mainstream of municipal wastewater. But, current adaptation methods take months or even years. To speed up the adaption of Anammox to low temperatures, this study describes a new approach: exposing Anammox microorganisms to an abrupt temporary reduction of temperature, i.e., cold shock. Anammox biomass in a moving bed biofilm reactor was subjected to three consecutive cold shocks (reduction from 24±2 to 5.0±0.2°C), each taking eight hours. Before the cold shocks, Anammox activity determined in ex situ tests using the temperature range of 12.5-19.5°C was 0.005-0.015 kg-N kg-VSS -1 day -1 . Cold shocks increased the activity of Anammox at 10°C to 0.054 kg-N kg-VSS -1 day -1 after the third shock, which is similar to the highest activities obtained for cold-enriched or adapted Anammox reported in the literature (0.080 kg-N kg-VSS -1 day -1 ). Fluorescence in situ hybridization analysis showed that Ca. Brocadia fulgida was the dominant species. Thus, cold shocks are an intriguing new strategy for the adaptation of Anammox to low temperature.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

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

2017

Kód důvěrnosti údajů

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

Název periodika

Biotechnology Progress

ISSN

1520-6033

e-ISSN

—

Svazek periodika

Neuveden

Číslo periodika v rámci svazku

Neuveden

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

5

Strana od-do

1-5

Kód UT WoS článku

—

EID výsledku v databázi Scopus

2-s2.0-85032881889