Bioenergy potential of red macroalgae Gelidium floridanum by pyrolysis: Evaluation of kinetic triplet and thermodynamics parameters

José Luiz Francisco Alves; Jean Constantino Gomes Da Silva; Valdemar Francisco da Silva Filho; Ricardo Francisco Alves; Muhammad Sajjad Ahmad; Muhammad Sarfraz Ahmad; Wendell Venicio de Araujo Galdino; Rennio Felix De Sena

doi:10.1016/j.biortech.2019.121892

Bioenergy potential of red macroalgae Gelidium floridanum by pyrolysis: Evaluation of kinetic triplet and thermodynamics parameters

Bioresour Technol. 2019 Nov:291:121892. doi: 10.1016/j.biortech.2019.121892. Epub 2019 Jul 26.

Authors

José Luiz Francisco Alves¹, Jean Constantino Gomes Da Silva², Valdemar Francisco da Silva Filho³, Ricardo Francisco Alves⁴, Muhammad Sajjad Ahmad⁵, Muhammad Sarfraz Ahmad⁶, Wendell Venicio de Araujo Galdino⁷, Rennio Felix De Sena⁷

Affiliations

¹ Department of Chemical Engineering and Food Engineering, Federal University of Santa Catarina, 88040-900 Florianópolis, Santa Catarina, Brazil. Electronic address: zeluiz_alves@hotmail.com.
² Department of Chemical Engineering and Food Engineering, Federal University of Santa Catarina, 88040-900 Florianópolis, Santa Catarina, Brazil. Electronic address: jean.constantino@cear.ufpb.br.
³ Department of Chemical Engineering and Food Engineering, Federal University of Santa Catarina, 88040-900 Florianópolis, Santa Catarina, Brazil.
⁴ Department of Materials Science and Engineering, Federal University of Campina Grande, 58429-900 Campina Grande, Paraíba, Brazil.
⁵ School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 30040, China.
⁶ National College of Business Administration and Economics, Punjab, Pakistan.
⁷ Laboratory of Activated Carbon, Department of Chemical Engineering, Federal University of Paraíba, 58033-455 João Pessoa, Paraíba, Brazil.

PMID: 31376670
DOI: 10.1016/j.biortech.2019.121892

Abstract

The aim of this study was to investigate the bioenergy potential of red macroalgae GF by evaluating its biofuel physicochemical characteristics, and conducting a kinetic study and thermodynamic analysis of pyrolysis for the first time. The thermal decomposition study was performed at low heating rates (5, 10, 20 and 30 °C min^-1) under N₂ atmosphere. The thermal behavior of GF pyrolysis indicated the presence of three different decomposition stages, which are associated with different components in its structure and consequently influence the kinetic and thermodynamic parameters. The kinetic triplet obtained for GF provided a suitable description of experimental thermal behavior. The thermodynamic parameters demonstrated that GF is as a new promising feedstock for bioenergy and presented a similar potential to well-known bioenergy feedstock.

Keywords: Bioenergy; Gelidium floridanum; Isoconversional methods; Kinetic study; Pyrolysis; Thermodynamic analysis.

Publication types

Evaluation Study

MeSH terms

Biofuels
Kinetics
Pyrolysis
Rhodophyta / metabolism*
Seaweed / metabolism*
Thermodynamics*

Substances

Biofuels