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Thermal oxidative degradation kinetics of agricultural residues using distributed activation energy model and global kinetic model.

Abstract：

:The study concerned the thermal oxidative degradation kinetics of agricultural residues, peanut shell (PS) and sunflower shell (SS). The thermal behaviors were evaluated via thermogravimetric analysis and the kinetic parameters were determined by using distributed activation energy model (DAEM) and global kinetic model (GKM). Results showed that thermal oxidative decomposition of two samples processed in three zones; the ignition, burnout, and comprehensive combustibility between two agricultural residues were of great difference; and the combustion performance could be improved by boosting heating rate. The activation energy ranges calculated by the DAEM for the thermal oxidative degradation of PS and SS were 88.94-145.30 kJ mol-1 and 94.86-169.18 kJ mol-1, respectively. The activation energy obtained by the GKM for the oxidative decomposition of hemicellulose and cellulose was obviously lower than that for the lignin oxidation at identical heating rate. To some degree, the determined kinetic parameters could acceptably simulate experimental data.

journal_name

Bioresour Technol

journal_title

Bioresource technology

authors

Ren X,Chen J,Li G,Wang Y,Lang X,Fan S

doi

10.1016/j.biortech.2018.04.047

subject

Has Abstract

pub_date

2018-08-01 00:00:00

pages

403-411

eissn

0960-8524

issn

1873-2976

pii

S0960-8524(18)30560-1

journal_volume

261

pub_type

杂志文章

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