Towards indication gases of spontaneous heating of biomass

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61988987%3A17310%2F18%3AA1901UJQ" target="_blank" >RIV/61988987:17310/18:A1901UJQ - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.fuel.2018.02.188" target="_blank" >http://dx.doi.org/10.1016/j.fuel.2018.02.188</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.fuel.2018.02.188" target="_blank" >10.1016/j.fuel.2018.02.188</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Towards indication gases of spontaneous heating of biomass

Popis výsledku v původním jazyce

Gases evolved during aerial oxidation of biomass in temperature range 40-160°C were studied in view to consider possible indicators of spontaneous heating. Three samples of lignocellulosic biomass and a sample of subbituminous coal (as ?reference? basis) were analysed and the following gaseous compounds were determined: carbon monoxide, carbon dioxide, methane, ethane, propane, ethylene, propylene, acetylene, butanes/butenes (sum), methanol, acetaldehyde, dimethyl ether and hydrogen. Measurements with wet and dried biomass were carried out to differentiate between microbial and chemical origins of the released gases. As a result, carbon dioxide, unsaturated hydrocarbons and methanol were clearly recognized as compounds produced from biomass mostly due to microbial activity at low temperatures. On the other hand, ethane, propane, dimethyl ether as well as carbon monoxide appear to originate primarily of chemical oxidation of biomass. With respect to detection of the spontaneous heating, carbon monoxide confirmed its exclusive role in monitoring the ?spon-com? process (also) of biomass. Unsaturated hydrocarbons that hold principal role in the indication of self-heating of coals were found unsuitable for the purpose for lignocellulosic biomass. Due to their exclusive microbial origin, traces of the propylene/ethylene can be detected already at temperature of 40°C, making thus their relation to early heating process unreliable. Ethane is presented as a promising indication gas.

Název v anglickém jazyce

Towards indication gases of spontaneous heating of biomass

Popis výsledku anglicky

Gases evolved during aerial oxidation of biomass in temperature range 40-160°C were studied in view to consider possible indicators of spontaneous heating. Three samples of lignocellulosic biomass and a sample of subbituminous coal (as ?reference? basis) were analysed and the following gaseous compounds were determined: carbon monoxide, carbon dioxide, methane, ethane, propane, ethylene, propylene, acetylene, butanes/butenes (sum), methanol, acetaldehyde, dimethyl ether and hydrogen. Measurements with wet and dried biomass were carried out to differentiate between microbial and chemical origins of the released gases. As a result, carbon dioxide, unsaturated hydrocarbons and methanol were clearly recognized as compounds produced from biomass mostly due to microbial activity at low temperatures. On the other hand, ethane, propane, dimethyl ether as well as carbon monoxide appear to originate primarily of chemical oxidation of biomass. With respect to detection of the spontaneous heating, carbon monoxide confirmed its exclusive role in monitoring the ?spon-com? process (also) of biomass. Unsaturated hydrocarbons that hold principal role in the indication of self-heating of coals were found unsuitable for the purpose for lignocellulosic biomass. Due to their exclusive microbial origin, traces of the propylene/ethylene can be detected already at temperature of 40°C, making thus their relation to early heating process unreliable. Ethane is presented as a promising indication gas.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

<a href="/cs/project/LO1208" target="_blank" >LO1208: Teoretické aspekty energetického zpracování odpadů a ochrany prostředí před negativními dopady</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

FUEL

ISSN

0016-2361

e-ISSN

—

Svazek periodika

222

Číslo periodika v rámci svazku

June

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

7

Strana od-do

610-616

Kód UT WoS článku

000429422800064

EID výsledku v databázi Scopus

2-s2.0-85043229745