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Open AccessArticle

Second-Generation Lignocellulosic Supportive Material Improves Atomic Ratios of C:O and H:O and Thermomechanical Behavior of Hybrid Non-Woody Pellets

1
Department of Phytosanitary, Rural Engineering and Soils, School of Engineering, São Paulo State University (Unesp), Ilha Solteira, São Paulo 15385-000, Brazil
2
Department of Plant Production, College of Agricultural and Technological Sciences, São Paulo State University (Unesp), Dracena, São Paulo 17900-000, Brazil
3
Brazilian Agricultural Research Corporation (Embrapa), Jaguariúna, São Paulo 13820-000, Brazil
*
Author to whom correspondence should be addressed.
Academic Editor: Daniela Meroni
Molecules 2020, 25(18), 4219; https://doi.org/10.3390/molecules25184219
Received: 19 August 2020 / Revised: 5 September 2020 / Accepted: 9 September 2020 / Published: 15 September 2020
(This article belongs to the Special Issue Hybrid Materials for Advanced Applications)
Pellets refer to solid biofuels for heating and power. The pellet’s integrity is of great relevant to ensure safe and effective transportation and storage, and comfort to stakeholders. Several materials that are supportive, whether organic and inorganic, to pellets exist. However, no work in the literature is linking making hybrid non-wood pellets with addition of residual biomass from distillation of cellulosic bioethanol, and this requires further investigations. Figuring out how effective this challenging agro-industrial residue could be for reinforcing non-wood pellets is accordingly the scientific point of this study focusing on management of waste and valorization of biomass. The pilot-scale manufacturing of hybrid pellets consisted of systematically pressing sugarcane bagasse with the lignocellulosic reinforcement at the mass ratios of 3:1, 1:1, and 1:3 on an automatic pelletizer machine at 200 MPa and 125 °C. Elemental contents of C and H, durability, and energy density all increased significantly from 50.05 to 53.50%, 5.95 to 7.80%, 95.90 to 99.55%, and 28.20 to 31.20 MJ kg−1, respectively, with blending the starting material with the reinforcement at 1:3. Preliminary evidence of residual biomass from distillation of second-generation bioethanol capable of highly improving molecular flammable/combustible properties, mechanical stability, and fuel power of composite non-wood pellets exist. View Full-Text
Keywords: blending; cellulosic bioethanol; energy storage; fuel grade biosolids; natural binding agent; reinforcement; sustainable waste-to-energy technique blending; cellulosic bioethanol; energy storage; fuel grade biosolids; natural binding agent; reinforcement; sustainable waste-to-energy technique
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MDPI and ACS Style

Moreira, B.R.A.; Viana, R.S.; Cruz, V.H.; Magalhães, A.C.; Miasaki, C.T.; Figueiredo, P.A.M.; Lisboa, L.A.M.; Ramos, S.B.; Sánchez, D.E.J.; Teixeira Filho, M.C.M.; May, A. Second-Generation Lignocellulosic Supportive Material Improves Atomic Ratios of C:O and H:O and Thermomechanical Behavior of Hybrid Non-Woody Pellets. Molecules 2020, 25, 4219.

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