Model-based optimization of microaeration for biogas desulfurization in UASB reactors

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22320%2F17%3A43913550" target="_blank" >RIV/60461373:22320/17:43913550 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S1369703X17301602" target="_blank" >https://www.sciencedirect.com/science/article/pii/S1369703X17301602</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.bej.2017.06.009" target="_blank" >10.1016/j.bej.2017.06.009</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Model-based optimization of microaeration for biogas desulfurization in UASB reactors

Popis výsledku v původním jazyce

During anaerobic treatment of sulfate-rich wastewater, biogas with a high concentration of hydrogen sulfide (H2S) is produced. Since H2S is toxic to humans and can cause corrosion of concrete and steel, it needs to be removed before using the biogas for energy and heat production. Biogas desulfurization can be achieved by blowing small amount of air into the anaerobic reactor, a process which is termed &quot;microaeration&quot;. In this study, the generally accepted Anaerobic Digestion Model No. 1 (ADM1) was extended with sulfate reduction and sulfide oxidation to optimize the microaeration process during the anaerobic treatment of sulfate-rich wastewater. The resulting model, termed ADM1-S/O, was validated against experimental data from two reactors operated under anaerobic and microaerobic conditions, showing a good description of H2S concentrations in the biogas. The biomass composition in both reactors was not significantly affected by microaeration. Additionally, scenario analyses were carried out to assess the effect of the influent S:COD ratio and the aeration intensity (O-2:S ratio) on the steady state reactor behavior.

Název v anglickém jazyce

Model-based optimization of microaeration for biogas desulfurization in UASB reactors

Popis výsledku anglicky

During anaerobic treatment of sulfate-rich wastewater, biogas with a high concentration of hydrogen sulfide (H2S) is produced. Since H2S is toxic to humans and can cause corrosion of concrete and steel, it needs to be removed before using the biogas for energy and heat production. Biogas desulfurization can be achieved by blowing small amount of air into the anaerobic reactor, a process which is termed &quot;microaeration&quot;. In this study, the generally accepted Anaerobic Digestion Model No. 1 (ADM1) was extended with sulfate reduction and sulfide oxidation to optimize the microaeration process during the anaerobic treatment of sulfate-rich wastewater. The resulting model, termed ADM1-S/O, was validated against experimental data from two reactors operated under anaerobic and microaerobic conditions, showing a good description of H2S concentrations in the biogas. The biomass composition in both reactors was not significantly affected by microaeration. Additionally, scenario analyses were carried out to assess the effect of the influent S:COD ratio and the aeration intensity (O-2:S ratio) on the steady state reactor behavior.

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

Biochemical Engineering Journal

ISSN

1369-703X

e-ISSN

—

Svazek periodika

125

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

BE - Belgické království

Počet stran výsledku

9

Strana od-do

171-179

Kód UT WoS článku

000410017600022

EID výsledku v databázi Scopus

2-s2.0-85020765963