Good servant, bad master: Sulfide influence on partial nitritation of sewage

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22320%2F17%3A43913546" target="_blank" >RIV/60461373:22320/17:43913546 - isvavai.cz</a>

Výsledek na webu

<a href="http://wst.iwaponline.com/content/early/2017/09/11/wst.2017.490" target="_blank" >http://wst.iwaponline.com/content/early/2017/09/11/wst.2017.490</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.2166/wst.2017.490" target="_blank" >10.2166/wst.2017.490</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Good servant, bad master: Sulfide influence on partial nitritation of sewage

Popis výsledku v původním jazyce

When applying partial nitritation (PN) to anaerobically pre-treated sewage, ammonium oxidizing bacteria (AOB) and nitrite oxidizing bacteria (NOB) will be exposed to dissolved sulfide and methane. Both sulfide and methane may inhibit nitrification. To gain knowledge necessary for sustaining PN under these conditions, we exposed an AOB enrichment and a mixed nitrifying culture to dissolved sulfide and methane. In the mixed nitrifying culture, sulfide selectively inhibited NOB activity (KI,AOB1 ? 150 mg-S L1, KI,NOB ? 10 mg-S L?1) which shows that sulfide may help establish PN. The AOB enrichment showed similar KI,AOB2 (130 mg-S L?1), but nitritation activity lagged longer than the time necessary to remove sulfide from the liquid. This demonstrates that feeding of sulfide into established PN should be avoided. Methane inhibition of AOB enrichment was assessed in batch assays with 10 mg-CH4 L1. As compared to control without methane, AOB enrichment activity was identical. Up to 51% of methane was converted to methanol, thus reducing the greenhouse gas emissions.

Název v anglickém jazyce

Good servant, bad master: Sulfide influence on partial nitritation of sewage

Popis výsledku anglicky

When applying partial nitritation (PN) to anaerobically pre-treated sewage, ammonium oxidizing bacteria (AOB) and nitrite oxidizing bacteria (NOB) will be exposed to dissolved sulfide and methane. Both sulfide and methane may inhibit nitrification. To gain knowledge necessary for sustaining PN under these conditions, we exposed an AOB enrichment and a mixed nitrifying culture to dissolved sulfide and methane. In the mixed nitrifying culture, sulfide selectively inhibited NOB activity (KI,AOB1 ? 150 mg-S L1, KI,NOB ? 10 mg-S L?1) which shows that sulfide may help establish PN. The AOB enrichment showed similar KI,AOB2 (130 mg-S L?1), but nitritation activity lagged longer than the time necessary to remove sulfide from the liquid. This demonstrates that feeding of sulfide into established PN should be avoided. Methane inhibition of AOB enrichment was assessed in batch assays with 10 mg-CH4 L1. As compared to control without methane, AOB enrichment activity was identical. Up to 51% of methane was converted to methanol, thus reducing the greenhouse gas emissions.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20800 - Environmental biotechnology

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Water Science and Technology

ISSN

0273-1223

e-ISSN

—

Svazek periodika

76

Číslo periodika v rámci svazku

12

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

11

Strana od-do

3258-3268

Kód UT WoS článku

000417838300010

EID výsledku v databázi Scopus

2-s2.0-85038569253