Edgar A. Silveira

Multi-response Optimization of Nauphoeta cinerea Residues Torrefaction for Biocoal Production: Advancing Waste-to-Energy and Circular Bioeconomy Pathways

Igor F. Mendonça, Gabriel S. do Vale, Tatiane L. Balliano, Edgar A. Silveira et autres

Abstract This study provides an original assessment of Nauphoeta cinerea residues, an unconventional and largely unexplored biomass, as feedstocks for biocoal production via torrefaction. By addressing a novel insect-derived resource, the work advances waste-to-energy strategies beyond traditional lignocellulosic and agro-industrial residues. Raw …

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A critical review of holistic 4E approaches for assessing sustainable aviation fuel pathways: Implications for feedstock, technology, policy and scale-up

Thiago da Silva Gonzales, Giulia Cruz Lamas, Simone Monteiro, Ana Filipa Ferreira et autres

The aviation sector urgently requires decarbonization, positioning Sustainable Aviation Fuels (SAF) as the most viable near-term option for reducing fossil jet fuel dependence. However, SAF scale-up remains constrained by coupled technological, thermodynamic, economic, environmental, and policy related trade offs. Although many studies …

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Methodological determinants of carbon intensity in the life cycle assessment of beef tallow biodiesel: A critical review

Marcela Cardoso Rodrigues, Emma Jagu Schippers, Edgar A. Silveira

Beef tallow biodiesel is often presented as a low-carbon fuel option, yet the reported carbon intensity of this pathway varies widely across the literature. This review examines the methodological reasons behind that variation by critically analyzing Life Cycle Assessment (LCA) studies focused …

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Structural effects of hydrothermal carbonization on the pyrolytic behavior of Corymbia torelliana via Py-GC/MS

TIAGO JOSÉ PIRES DE OLIVEIRA, Bianca Bueno Rosário, J.A. Santana, João Moreira Neto et autres

This study investigated the effects of hydrothermal carbonization (HTC) on the pyrolysis of lignocellulosic residues from Corymbia torelliana , aiming to enhance thermochemical valorization through micro-pyrolysis coupled with gas chromatography–mass spectrometry (Py-GC/MS). Biomass samples were subjected to HTC at 180, 220, and …

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Intermittent versus continuous kiln drying of hardwood boards: comparable-stage analysis of energy use, kinetics, quality, and climate impacts

Bruce Schuler Frantzen, Edgar A. Silveira, Giulia Cruz Lamas, Taygoara Felamingo de Oliveira

Intermittent kiln drying is often proposed as an energy-saving strategy, yet integrated experimental evidence for hardwood boards remains limited. This study developed a laboratory-scale convective kiln and generated an experimental dataset for Tauari lumber ( Couratari stellata ) under four drying treatments …

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Açaí seed valorization through torrefaction and pyrolysis: Pathways toward high-energy and low-carbon biocoal

Alisson Lara de Carvalho, Edgar A. Silveira, Thiago de Paula Protásio, TIAGO JOSÉ PIRES DE OLIVEIRA

The sustainable use of Amazonian residues plays a key role in Brazil's decarbonization strategy and circular bioeconomy. Among these residues, açaí seed ( Euterpe sp. ) accounts for 70–80% of the fruit mass and remains largely underutilized, despite its high lignin and …

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Energy–environmental nexus in green hydrogen-assisted conversion of second-crop canola to sustainable aviation fuel: Toward low-carbon bioenergy systems

Giulia Cruz Lamas, Alexandre Cardoso, Priscila Seixas Sabaini, Sandra M. Luz et autres

Aviation fuel remains the main cost and environmental burden in air transport. This study presents a well-to-wake life cycle assessment (LCA) of canola-based Sustainable Aviation Fuel (SAF) under tropical conditions, based on primary data from Brazilian producers. The analysis encompasses agricultural, pre-processing, …

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Optimizing the Flavor Profile of Brazilian Spirits: Torrefaction Modeling of Native Woods for Cachaça Maturation

Amanda Felipe Reitenbach, Adriana Sturion Lorenzi, Nicole Porto Catibe, Renata P. I. Tormena et autres

Cachaça, a traditional Brazilian spirit, undergoes significant sensory refinement through barrel aging. In this study, we investigated how heat treatment of Brazilian woods (Balsam, Jaqueira, Jequitibá, Amburana, and Ipê) affects the sensory profile of cachaça, using Oak as a benchmark. Physicochemical characterization, …

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Enzymatic Technologies for Renewable Energy Production of Biofuels

Edgar A. Silveira, Amauris Pérez Arias, Ana Teresa Berríos Rivas, Isabel Cristina Meléndez Mogollón et autres

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Climate-Driven Variability in Sugarcane Productivity: A Data-Driven Assessment for São Paulo State (Brazil)

Giulia Cruz Lamas, Normando Perazzo Barbosa Souto, Igor F. Mendonça, Marcela Machado et autres

Sugarcane underpins Brazilian ethanol production and emerging sustainable aviation fuel pathways, yet year-to-year climatic variability introduces significant uncertainty into biomass supply chains and life cycle assessment (LCA) results. Most LCA and process optimisation studies rely on static productivity values, neglecting the temporal …

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Macauba ( Acrocomia aculeata ) as a Bioenergy Platform: Integrated Biodiesel Production and Lignocellulosic Biomass Valorization

Daniel Nascimento, Emerson Gonçalves de Arandas Viana dos Santos, Fábio Moreira da Silva, Diego C. B. D. Santos et autres

High Resolution Image Download MS PowerPoint Slide Macauba ( Acrocomia aculeata ) is a native palm from tropical regions with high potential for integrated bioenergy and bioproduct applications. This study evaluated the physicochemical properties of macauba pulp and kernel oils, assessed the …

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Feasibility of hybrid energy systems for environmental remediation: Transforming closed landfills into sustainable energy hubs

Marcela Charantola Rodrigues, Luciano Soares da Cunha, Edgar A. Silveira, ANTONIO CESAR PINHO BRASIL JUNIOR

This article discusses an integrated operational arrangement for the remediation of the environmental impacts of landfills by implementing a hybrid electricity production system, which uses energy potential from municipal solid waste associated with solar energy (photovoltaics and thermal). This system composes a …

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