Anaerobic treatment of sugarcane bagasse. An opportunity for sustainability in rural environments?

Cevallos-Molina, Eddy Ronaldo; Vélez-Vélez, Teodoro Vicente; Baquerizo-Crespo, Ricardo José; Gómez-Salcedo, Yunet

doi:10.1016/j.envadv.2023.100427

Cited by 1 publication

(1 citation statement)

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“…Currently, in addition to direct combustion as a strategy for exploiting these residues, there are innovative applications of sugarcane waste, such as anaerobic production of hydrogen from bagasse [ 12 ], biogas production [ 13 ], and even the extraction of materials extensively required by the modern industry like silica [ 14 ]. These demonstrate the diverse potential of using these residues in modern technologies.…”

Section: Introductionmentioning

confidence: 99%

Thermochemical behavior of agricultural and industrial sugarcane residues for bioenergy applications

Martinez-Mendoza,

Guerrero-Perez,

Barraza-Burgos

et al. 2023

Bioengineered

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The Colombian sugarcane industry yields significant residues, categorized as agricultural and industrial. While bagasse, a widely studied industrial residue, is employed for energy recovery through combustion, agricultural residues are often left in fields. This study assesses the combustion behavior of these residues in typical collection scenarios. Additionally, it encompasses the characterization of residues from genetically modified sugarcane varieties in Colombia, potentially exhibiting distinct properties not previously documented. Non-isothermal thermogravimetrical analysis was employed to study the thermal behavior of sugarcane industrial residues (bagasse and pith) alongside agricultural residues from two different sugarcane varieties. This facilitated the determination of combustion reactivity through characteristic combustion process temperatures and technical parameters like ignition and combustion indexes. Proximate, elemental, and biochemical analyses revealed slight compositional differences. Agricultural residues demonstrated higher ash content (up to 34%) due to foreign matter adhering during harvesting, as well as soil and mud attachment during collection. Lignin content also varied, being lower for bagasse and pith, attributed to the juice extraction and milling processes that remove soluble lignin. Thermogravimetric analysis unveiled a two-stage burning process in all samples: devolatilization and char formation (~170°C), followed by char combustion (~310°C). Characteristic temperatures displayed subtle differences, with agricultural residues exhibiting lower temperatures and decomposition rates, resulting in reduced ignition and combustion indexes. This indicates heightened combustion reactivity in industrial residues, attributed to their elevated oxygen percentage, leading to more reactive functional groups and greater combustion stability compared to agricultural residues. This information is pertinent for optimizing sugarcane residues utilization in energy applications.

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Section: Introductionmentioning

confidence: 99%