Home |  English version |  Mappa |  Commenti |  Sondaggio |  Staff |  Contattaci Cerca nel sito  
Istituto di ricerche sulla combustione
Soppresso il 01/10/2020

Torna all'elenco Contributi in rivista anno 2020

Contributo in rivista

Tipo: Articolo in rivista

Titolo: Non-isothermal pyrolysis of grape marc :Thermal behavior, kinetics and evolved gas analysis

Anno di pubblicazione: 2020

Formato: Cartaceo

Autori: Enelio Torres-Garcia, Paola Brachi

Affiliazioni autori: Biomass Conversion Management DepartmentInstituto Mexicano del Petróleo, Eje Central Lázaro Cárdenas NorteMexico CityMexic; Institute for Research on Combustion, National Research CouncilNaplesItaly

Autori CNR:

  • PAOLA BRACHI

Lingua: inglese

Abstract: The non-isothermal decomposition behavior of grape marc (GM) residues from wine industry was investigated by using different thermal analysis techniques, including: (1) thermogravimetric analysis/differential thermogravimetry (TGA-DTG) to study the thermal decomposition kinetics; (2) thermogravimetry (TG-DTG) coupled with Fourier transform infrared spectroscopy (FTIR) to investigate the nature of the gas-phase products released during the pyrolytic breakdown; and (3) simultaneous thermogravimetry/differential scanning calorimetry (TGA-DSC) analysis to obtain information on the heat flows associated with the thermal decomposition of grape marc. Thermogravimetric measurements at five different heating rates (i.e., 2.5, 5, 10, 20, 40 K min-1) were performed for the kinetic computations, which were carried out by adopting a "model-free" approach based on the application of isoconversional methods. In more details, two different integral methods, i.e., the linear Ozawa-Flynn-Wall (OFW) method and the nonlinear Vyazovkin incremental method, were comparatively used in order to obtain a set of kinetic parameters useful for the conceptual design of thermochemical processes involving grape marc. The reliability of the obtained parameters was confirmed by the successful application of the same data to reproduce experimental TG curves not included in the kinetic computations. The effect of the heating rate on the nature of the gas-phase products arising from grape marc decomposition as well as on the heat flows associated with the pyrolytic process was also investigated. Finally, the study was complemented with an extensive investigation on chemical and physical properties of grape marc residues (i.e., ultimate analysis, proximate analysis, calorific values determination, FTIR analysis and cellulose, hemicellulose and lignin content determination), which provides useful input data for modeling grape march conversion processes.

Lingua abstract: inglese

Pagine da: 1463

Pagine a: 1478

Pagine totali: 16

Rivista:

Journal of thermal analysis and calorimetry Kluwer Academic Publishers
Paese di pubblicazione: Paesi Bassi
Lingua: inglese
ISSN: 1388-6150

Numero volume: 139

Numero fascicolo: 2

DOI: 10.1007/s10973-019-08530-z

Referee: Sě: Internazionale

Stato della pubblicazione: Published version

Parole chiave:

  • Kinetic analysis
  • Agro-industrial residues
  • TGA-DSC
  • TGA-FTIR
  • Isoconversional method
  • Grape marc
  • Evolved gas analysis

URL: https://link.springer.com/article/10.1007/s10973-019-08530-z

Strutture CNR:

 
Torna indietro Richiedi modifiche Invia per email Stampa
Home Il CNR  |  I servizi News |   Eventi | Istituti |  Focus