Naslov
A kinetic study of roadside grass pyrolysis and digestate from anaerobic mono-digestion

Autori
Bedoić, Robert ; Ocelić Bulatović, Vesna ; Čuček, Lidija ; Ćosić, Boris ; Špehar, Ana ; Pukšec, Tomislav ; Duić, Neven

Izvornik
Bioresource technology (0960-8524) 292 (2019); 121935, 9

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
roadside grass ; roadside grass digestate ; anaerobic digestion ; pyrolysis ; kinetic study ; thermogravimetric measurements ; isoconversional models

Sažetak
The aim of this research is to evaluate the thermogravimetric behaviour of roadside grass and its digestate obtained from mesophilic anaerobic mono-digestion by quantifying its impacts on biomass composition and properties. Thermogravimetric measurements were conducted in a laboratory furnace under nitrogen flowrate of 100 mL/min in the temperature range from 35 to 800 °C at five different heating rates of 2.5, 5, 10, 15 and 20 °C/min. Friedman and Kissinger- Akahira- Sunose differential and integral isoconversional models were applied to determine the distributions of activation energies and modified pre- exponential factors per reacted mass (degree of conversion). The investigation demonstrated that anaerobic digestion of roadside grass can be used to generate biochar- richer material (with significantly greater yield of final residues after pyrolysis) with less energy required for subsequent pyrolysis in comparison with raw roadside grass.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo, Strojarstvo, Interdisciplinarne tehničke znanosti

POVEZANOST RADA