Intraparticle Connectivity in Sugarcane Bagasse Unveiled by Pore Network Modeling

Autor(es)

Yancy-Caballero, Daison ^{[1, 2]} ; Ling, Liu Y. ^[2] ; Fujita, Andre ^[1] ; Ferreira, Joao E. ^[1] ; Driemeier, Carlos ^[2]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Inst Math & Stat IME, BR-05508090 Sao Paulo, SP - Brazil

^[2] Brazilian Ctr Res Energy & Mat CNPEM, Brazilian Bioethanol Sci & Technol Lab CTBE, POB 6192, Rua Giuseppe Maximo Scolfaro 10-000, BR-13083970 Campinas, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: BioEnergy Research; v. 12, n. 3, p. 546-557, SEP 2019.
• Citações Web of Science: 0

Resumo

Sugarcane bagasse is a vast, inexpensive lignocellulosic feedstock that can be industrially converted into renewable materials, chemicals and biofuels. Bagasse, which results from the shredding and crushing of the sugarcane stalks, has a pore structure that is inherited from the native plant tissues and is partly disrupted due to the applied mechanical processes. The connectivity in the bagasse pore space can be critical for mass transport in industrial processes requiring liquid or solute extraction from the solid or impregnation of catalysts and reactants into the biomass. In this work, we pioneer the construction of pore network models (PNMs) to investigate intraparticle connectivity in lignocellulosic biomass. X-ray microtomograms of sugarcane bagasse are employed to extract the PNMs, which are then analyzed with support from hydraulic, diffusion, and graph theory-based methods. The analysis determines the characteristic sizes and anisotropies of the bagasse pore space. Moreover, it reveals that a relatively small number of pores are critical for the intraparticle connectivity. The critical pores can be in tissue cracks and xylem vessels as well as in ruptured parenchyma and fiber cells. The relative importance of each of these regions depends on the specifics of the bagasse particle. (AU)

• Processo FAPESP: 17/01330-5 - Análise de imagens 3D para modelagem realista e simulação de processos de conversão da biomassa
• Beneficiário: Daison Manuel Yancy Caballero
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 15/01587-0 - Armazenagem, modelagem e análise de sistemas dinâmicos para aplicações em e-Science
• Beneficiário: João Eduardo Ferreira
• Modalidade de apoio: Auxílio à Pesquisa - Programa eScience e Data Science - Temático