Performance evaluation of sulfide-based autotrophic denitrification for petrochemical industry wastewater

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22320%2F21%3A43920413" target="_blank" >RIV/60461373:22320/21:43920413 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S221471442030711X?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S221471442030711X?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jwpe.2020.101834" target="_blank" >10.1016/j.jwpe.2020.101834</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Performance evaluation of sulfide-based autotrophic denitrification for petrochemical industry wastewater

Popis výsledku v původním jazyce

Oil refineries generate wastewater pollutants such as sulfide and nitrate from gasoline sweetening and other concomitant processes, respectively. However, the concentration of biodegradable organic substrate in the industrial wastewater is insufficient for the complete denitrification process. Thus, this study investigated sulfide-based denitrification treatment for real sulfide-rich industrial wastewater, with a low C/N molar ratio, produced in the oil refinery. The performance of two continuous laboratory packed-bed reactors (PBRs) packed with different biomass carriers was evaluated. PBRs were denoted as R1 (polyester type carriers) and R2n (polyester type carriers coated with nanofibers) and operated at 24 °C with the fixed S/N molar ratio at 0.28, respectively. The maximum sulfide and nitrate-nitrogen applied loading rate was 0.17 kg/(m3⋅d) and 0.25 kg/(m3⋅d), respectively. Results showed nitrate removal efficiency was 94.8 % and 95.3 % in R1 and R2n, respectively. Sulfide was almost completely removed in both PBRs, achieving the sulfide removal efficiency of 99 % throughout the entire experiment. The R2n achieved a higher specific volumetric denitrification rate then R1 since nanofiber carriers enhanced bacterial attachment. This study indicated great potential for further application in petrochemical wastewater treatment.

Název v anglickém jazyce

Performance evaluation of sulfide-based autotrophic denitrification for petrochemical industry wastewater

Popis výsledku anglicky

Oil refineries generate wastewater pollutants such as sulfide and nitrate from gasoline sweetening and other concomitant processes, respectively. However, the concentration of biodegradable organic substrate in the industrial wastewater is insufficient for the complete denitrification process. Thus, this study investigated sulfide-based denitrification treatment for real sulfide-rich industrial wastewater, with a low C/N molar ratio, produced in the oil refinery. The performance of two continuous laboratory packed-bed reactors (PBRs) packed with different biomass carriers was evaluated. PBRs were denoted as R1 (polyester type carriers) and R2n (polyester type carriers coated with nanofibers) and operated at 24 °C with the fixed S/N molar ratio at 0.28, respectively. The maximum sulfide and nitrate-nitrogen applied loading rate was 0.17 kg/(m3⋅d) and 0.25 kg/(m3⋅d), respectively. Results showed nitrate removal efficiency was 94.8 % and 95.3 % in R1 and R2n, respectively. Sulfide was almost completely removed in both PBRs, achieving the sulfide removal efficiency of 99 % throughout the entire experiment. The R2n achieved a higher specific volumetric denitrification rate then R1 since nanofiber carriers enhanced bacterial attachment. This study indicated great potential for further application in petrochemical wastewater treatment.

Druh

J_ost - Ostatní články v recenzovaných periodicích

CEP obor

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OECD FORD obor

20801 - Environmental biotechnology

Projekt

—

Návaznosti

N - Vyzkumna aktivita podporovana z neverejnych zdroju

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

Journal of Water Process Engineering

ISSN

2214-7144

e-ISSN

—

Svazek periodika

40

Číslo periodika v rámci svazku

April 2021

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

6

Strana od-do

"Neuvedeno"

Kód UT WoS článku

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EID výsledku v databázi Scopus

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