INVESTIGADORES
FABANI Maria Paula
artículos
Título:
Kinetic and thermodynamic comparative study of quince bio-waste slow pyrolysis before and after sustainable recovery of pectin compounds
Autor/es:
TORRES-SCIANCALEPORE, RODRIGO; FERNANDEZ, ANABEL; ASENSIO, DANIELA; RIVEROS, MATHIAS; FABANI, MARÍA PAULA; FOUGA, GASTÓN; RODRIGUEZ, ROSA; MAZZA, GERMÁN
Revista:
ENERGY CONSERVATION AND MANAGEMENT
Editorial:
PERGAMON-ELSEVIER SCIENCE LTD
Referencias:
Año: 2022 vol. 252
ISSN:
0196-8904
Resumen:
This work aims to study and compare the kinetic and thermodynamic behavior of pyrolysis of quince waste (QW) and pectin-free quince waste (PFQW) after extraction. The pectin extraction with acid treatment had a yield of 3.2 ± 0.1 % (dry basis, db). Pyrolysis experiments were conducted in a macro-TG reactor at three heating rates (5, 10, and 15 °C/min) and temperatures in the range 27?900 °C under a nitrogen atmosphere. A better fit of the experimental data was achieved by modeling the reactions by a multi-step mechanism considering three different parallel reactions for thermal decomposition of hemicelluloses, cellulose, and lignin. The results indicated that the Flynn-Wall-Ozawa (FWO) method provided the best R2, MSE, and AAD values. The resulting values of the thermodynamic activation parameters ΔH, ΔG, and ΔS were 53.28?89.36 kJ/mol, 114.54?155.01 kJ/mol, and −0.17?(−0.04) kJ/(mol K) for pyrolysis of QW, and 29.97?90.68 kJ/mol, 99.42?158.86 kJ/mol, and −0.23 ? (−0.01) kJ/(mol K) for PFQW. According to bioenergy indicators, PFQW presented good characteristics as a biofuel feedstock due to its high energy density values. The kinetic and thermodynamic parameters indicated greater reactivity of PFQW to pyrolysis compared to QW, showing that in addition to obtaining a product with added value, such as pectin, the extraction process generates a solid residue that is easier to treat under a thermochemical platform. The novelty of the paper focuses on the influence of the pretreatment of quince bio-waste (by extracting pectin compounds) on reactivity to pyrolysis, providing valuable kinetic and thermodynamic information.