Syngas biomethanation in countercurrent flow trickle-bed reactor operated under different temperature conditions

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22320%2F22%3A43924242" target="_blank" >RIV/60461373:22320/22:43924242 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0960148122014318" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0960148122014318</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.renene.2022.09.072" target="_blank" >10.1016/j.renene.2022.09.072</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Syngas biomethanation in countercurrent flow trickle-bed reactor operated under different temperature conditions

Popis výsledku v původním jazyce

Syngas, a mixture of CO, H2, and CO2, is produced by waste carbonaceous feedstocks gasification, which plays an important role in renewable energy production. This study investigated the biomethanation of syngas (45% H2, 30% CO, 25% CO2) in a trickle-bed reactor operated under mesophilic (35 °C), hyper-mesophilic (45 °C), and thermophilic conditions (55 °C). The results revealed that CH4 production increased with increasing temperature. CH4 production under steady-state conditions at the hyper-mesophilic and thermophilic temperatures were comparable; 92.2 ± 1.7 mmol/(Lbed∙d) and 93.9 ± 0.9 mmol/(Lbed∙d), respectively. On the contrary, electron losses in volatile fatty acids were the highest under mesophilic conditions. Additionally, digestate can be dosed as a nutrient addition and as a continuous inoculum source to ensure the optimal syngas biomethanation performance. The hyper-mesophilic conditions strategy illustrates possible energy savings for bioreactor heating with CH4 production comparable to thermophilic conditions, thus saving operating costs.

Název v anglickém jazyce

Syngas biomethanation in countercurrent flow trickle-bed reactor operated under different temperature conditions

Popis výsledku anglicky

Syngas, a mixture of CO, H2, and CO2, is produced by waste carbonaceous feedstocks gasification, which plays an important role in renewable energy production. This study investigated the biomethanation of syngas (45% H2, 30% CO, 25% CO2) in a trickle-bed reactor operated under mesophilic (35 °C), hyper-mesophilic (45 °C), and thermophilic conditions (55 °C). The results revealed that CH4 production increased with increasing temperature. CH4 production under steady-state conditions at the hyper-mesophilic and thermophilic temperatures were comparable; 92.2 ± 1.7 mmol/(Lbed∙d) and 93.9 ± 0.9 mmol/(Lbed∙d), respectively. On the contrary, electron losses in volatile fatty acids were the highest under mesophilic conditions. Additionally, digestate can be dosed as a nutrient addition and as a continuous inoculum source to ensure the optimal syngas biomethanation performance. The hyper-mesophilic conditions strategy illustrates possible energy savings for bioreactor heating with CH4 production comparable to thermophilic conditions, thus saving operating costs.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20704 - Energy and fuels

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název periodika

RENEWABLE ENERGY

ISSN

0960-1481

e-ISSN

1879-0682

Svazek periodika

199

Číslo periodika v rámci svazku

November 2022

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

7

Strana od-do

1329-1335

Kód UT WoS článku

000868482700004

EID výsledku v databázi Scopus

2-s2.0-85138808322