Catalytic effects of potassium on biomass pyrolysis, combustion and torrefaction

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27350%2F18%3A10239701" target="_blank" >RIV/61989100:27350/18:10239701 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989100:27730/18:10239701

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.apenergy.2018.10.065" target="_blank" >http://dx.doi.org/10.1016/j.apenergy.2018.10.065</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.apenergy.2018.10.065" target="_blank" >10.1016/j.apenergy.2018.10.065</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Catalytic effects of potassium on biomass pyrolysis, combustion and torrefaction

Popis výsledku v původním jazyce

Potassium is a natural catalyst in biomass thermochemical conversion and plays an essential role in plant&apos;s growth. To figure out the catalytic effects of potassium on the thermochemical behaviors of biomass, the pyrolysis, combustion, and torrefaction characteristics of rubber wood are comprehensively studied using a thermogravimetric analyzer where the biomass is impregnated by potassium carbonate (K2CO3) at different concentrations. The impregnated potassium is clearly exhibited in the spectra of Fourier-transform infrared spectroscopy, while X-ray diffraction indicate that the cellulose crystallinity decreases with increasing the potassium concentration which increases the biomass reactivity in pyrolysis. The ignition temperature of the potassium-impregnated biomass is lowered slightly when compared with the raw biomass; alternatively, its burnout temperature is reduced profoundly, suggesting that the addition of potassium into the biomass can substantially intensify its oxidative reactivity. Considering the treated biomass torrefaction, its cellulose decomposition at 250 oC is intensified, rendering a reduction in the solid yield with increasing potassium concentration. With the same mass loss at 200-300 oC, at least 28% of torrefaction time can be saved for the potassium-impregnated biomass. Accordingly, the catalytic effect of potassium on biomass thermochemical conversion is clearly outlined. Moreover, the produced potassium-rich biochar is conducive to the developments of carbon storage, soil amendment, and negative emissions technologies. (C) 2018 Elsevier Ltd

Název v anglickém jazyce

Catalytic effects of potassium on biomass pyrolysis, combustion and torrefaction

Popis výsledku anglicky

Potassium is a natural catalyst in biomass thermochemical conversion and plays an essential role in plant&apos;s growth. To figure out the catalytic effects of potassium on the thermochemical behaviors of biomass, the pyrolysis, combustion, and torrefaction characteristics of rubber wood are comprehensively studied using a thermogravimetric analyzer where the biomass is impregnated by potassium carbonate (K2CO3) at different concentrations. The impregnated potassium is clearly exhibited in the spectra of Fourier-transform infrared spectroscopy, while X-ray diffraction indicate that the cellulose crystallinity decreases with increasing the potassium concentration which increases the biomass reactivity in pyrolysis. The ignition temperature of the potassium-impregnated biomass is lowered slightly when compared with the raw biomass; alternatively, its burnout temperature is reduced profoundly, suggesting that the addition of potassium into the biomass can substantially intensify its oxidative reactivity. Considering the treated biomass torrefaction, its cellulose decomposition at 250 oC is intensified, rendering a reduction in the solid yield with increasing potassium concentration. With the same mass loss at 200-300 oC, at least 28% of torrefaction time can be saved for the potassium-impregnated biomass. Accordingly, the catalytic effect of potassium on biomass thermochemical conversion is clearly outlined. Moreover, the produced potassium-rich biochar is conducive to the developments of carbon storage, soil amendment, and negative emissions technologies. (C) 2018 Elsevier Ltd

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20502 - Paper and wood

Projekt

<a href="/cs/project/EF16_019%2F0000753" target="_blank" >EF16_019/0000753: Centrum výzkumu nízkouhlíkových energetických technologií</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

Applied Energy

ISSN

0306-2619

e-ISSN

—

Svazek periodika

235

Číslo periodika v rámci svazku

1 February 2019

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

10

Strana od-do

346-355

Kód UT WoS článku

000458942800028

EID výsledku v databázi Scopus

2-s2.0-85056155648