Final products and kinetics of biochemical and chemical sulfide oxidation under microaerobic conditions

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22320%2F18%3A43915843" target="_blank" >RIV/60461373:22320/18:43915843 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.2166/wst.2018.485" target="_blank" >http://dx.doi.org/10.2166/wst.2018.485</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.2166/wst.2018.485" target="_blank" >10.2166/wst.2018.485</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Final products and kinetics of biochemical and chemical sulfide oxidation under microaerobic conditions

Popis výsledku v původním jazyce

Hydrogen sulfide is a toxic and usually undesirable by-product of the anaerobic treatment of sulfate containing wastewater. It can be removed through microaeration, a simple and cost-effective method involving the application of oxygen limiting conditions (i.e., DO below 0.1 mg L-1). However, the exact transformation pathways of sulfide under microaerobic conditions are still unclear. In this paper, batch experiments were performed to study biochemical and chemical sulfide oxidation under microaerobic conditions. The biochemical experiments were conducted using a strain of Sulfuricurvum kujiense. Under microaerobic conditions, the biochemical sulfide oxidation rate (in mg S L-1 d-1) was approximately 2.5 times faster than the chemical sulfide oxidation rate. Elemental sulfur was the major end-product of both biochemical and chemical sulfide oxidation. During biochemical sulfide oxidation elemental sulfur was in the form of white flakes, while during chemical sulfide oxidation elemental sulfur created white suspension. Moreover, a mathematical model describing biochemical and chemical sulfide oxidation was developed and calibrated by the experimental results.

Název v anglickém jazyce

Final products and kinetics of biochemical and chemical sulfide oxidation under microaerobic conditions

Popis výsledku anglicky

Hydrogen sulfide is a toxic and usually undesirable by-product of the anaerobic treatment of sulfate containing wastewater. It can be removed through microaeration, a simple and cost-effective method involving the application of oxygen limiting conditions (i.e., DO below 0.1 mg L-1). However, the exact transformation pathways of sulfide under microaerobic conditions are still unclear. In this paper, batch experiments were performed to study biochemical and chemical sulfide oxidation under microaerobic conditions. The biochemical experiments were conducted using a strain of Sulfuricurvum kujiense. Under microaerobic conditions, the biochemical sulfide oxidation rate (in mg S L-1 d-1) was approximately 2.5 times faster than the chemical sulfide oxidation rate. Elemental sulfur was the major end-product of both biochemical and chemical sulfide oxidation. During biochemical sulfide oxidation elemental sulfur was in the form of white flakes, while during chemical sulfide oxidation elemental sulfur created white suspension. Moreover, a mathematical model describing biochemical and chemical sulfide oxidation was developed and calibrated by the experimental results.

Druh

J_ost - Ostatní články v recenzovaných periodicích

CEP obor

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OECD FORD obor

10609 - Biochemical research methods

Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2018

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

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Svazek periodika

78

Číslo periodika v rámci svazku

9

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

1916-1924

Kód UT WoS článku

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EID výsledku v databázi Scopus

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