Poder calorífico de resíduos florestais canadenses estimado por análise imediata e elementar

Kelly Hofsetz; Josephine Mary Hill

doi:10.17765/2176-9168.2026v19.e14165

Autores/as

Kelly Hofsetz Universidade de Campinas https://orcid.org/0000-0001-8329-7011
Josephine Mary Hill Department of Chemical and Petroleum Engineering/Schulich School of Engineering/University of Calgary/ https://orcid.org/0000-0003-2708-565X

DOI:

https://doi.org/10.17765/2176-9168.2026v19.e14165

Palabras clave:

Bioenergia, Biomassa Florestal, Conteúdo de Umidade, Correlações Empíricas, Energia Renovável

Resumen

O Canadá possui uma das matrizes energéticas mais limpas do mundo, com 80% da eletricidade proveniente de fontes que não emitem gases de efeito estufa. Entre as fontes renováveis, a mais importante é a hídrica. Entretanto, o amplo suprimento de biomassa florestal renovável pode aumentar a participação de energia proveniente de biomassa no cenário canadense. Considerando a importância dos resíduos florestais canadenses como fonte de energia renovável, esse estudo determinou o poder calorífico superior dessa biomassa através de correlações da literatura que utilizam dados de análise elementar e imediata, e verificou o impacto do teor de umidade no poder calorífico inferior. A estimativa por meio dos dados da análise elementar resultou em um poder calorífico superior de 18,80 MJ/kg, valor próximo aos experimentais encontrados na literatura para resíduos florestais e biomassa lenhosa. O teor de umidade teve impacto negativo no poder calorífico inferior, com esse parâmetro diminuindo com o aumento do conteúdo de água da biomassa, saindo de um valor de 17,72 MJ/kg (isento de água) e chegando a 7,60 MJ/kg quando o resíduo florestal apresentou 50% de umidade.

Biografía del autor/a

Kelly Hofsetz, Universidade de Campinas

I have a degree in Chemical Engineering from the University of Caxias do Sul (2000), a master's degree (2003) and a doctorate (2007) in Food Engineering from the State University of Campinas. I completed part of my doctorate (sandwich doctorate) at the Faculty of Engineering of the University of Porto (Portugal) (2004-2005). I have a post-doctorate from the Faculty of Chemical Engineering at the State University of Campinas in the area of biofuels (2010) and a post-doctorate from the Schulich School of Engineering at the University of Calgary (Canada) (2023- 2024). I am part of the Study, Research and Extension Group on Medicinal Plants, Food and Nutrition according to Ayurveda. I have experience in the area of Process Engineering, with an emphasis on organic materials techniques, mainly on physical characteristics and properties (volume, porosity, structure); and in research on the production, energy consumption and processing of biomass with high moisture content. Since 2010 I have been a professor of Engineering at the Faculty of Applied Sciences at UNICAMP on Campus Limeira/SP (Brazil).

Josephine Mary Hill, Department of Chemical and Petroleum Engineering/Schulich School of Engineering/University of Calgary/

NAME

Josephine M. Hill

POSITION TITLE

Professor of Chemical Engineering

INSTITUTION AND LOCATION

DEGREE

(if applicable)

YEAR(s)

FIELD OF STUDY

University of Waterloo, Waterloo, ON, CANADA

BASc

1991

Chemical Engineering

University of Waterloo, Waterloo, ON, CANADA

MASc

1992

Chemical Engineering

University of Wisconsin-Madison, Madison, WI

PhD

1999

Chemical Engineering

Personal Statement

Dr Hill’s research interests include using catalysis to improve the efficiency of various processes including partial upgrading, gasification, and microwave treatment, as well as converting solid waste materials, such as petroleum coke and biomass, into catalysts supports and activated carbon. Sustainability drives her approach to research, and she has recently applied techno-economic analysis to better inform the direction of her research program.

Most impactful contributions include:

Guohui Li, Linjie Hu, Josephine M Hill, Comparison of reducibility and stability of alumina-supported Ni catalysts prepared by impregnation and co-precipitation, Applied Catalysis A: General (2006), 301, 16-24.(338 citations)
Hongpeng He and Josephine M Hill, Carbon Deposition on Ni/YSZ Composites Exposed to Humidified Methane, Applied Catalysis A: General (2007) 317, 284-292.(196 citations)
Mohammad S. Masnadi, Rozita Habibi, Jan Kopyscinski, Josephine M Hill, Xiaotao Bi, C. Jim Lim, Naoko Ellis, John R. Grace, Fuel characterization and co-pyrolysis kinetics of biomass and fossil fuels, Fuel (2014) 117, 1204–1214. (186 citations)
Rozita Habibi, Jan Kopyscinski, Mohammad Masnadi, Jill Lam, John Grace, Charles Mims, and Josephine M Hill, Co-gasification of biomass and non-biomass feedstocks: Synergistic and inhibition effects of switchgrass mixed with sub-bituminous coal and fluid coke during CO₂ gasification, Energy and Fuels (2013) 27 (1), 494-500.(160 citations)

Most most recent publications include:

Erika Bonatti, Natalia Mariano Cabral, Roshni Sajiv Kumar, and Josephine M. Hill. Bio-Oil Upgrading: Impact of Phenol on Acetic Acid Esterification with Amberlyst-15. Energy & Fuels 2025 39 (22), 10424-10434. DOI: 10.1021/acs.energyfuels.5c00577.
Roshni Sajiv Kumar, Daya Ram Nhuchhen, Josephine M. Hill, All wastes/residues are not equal for hydrogen production via gasification: Impacts of feedstock properties on process parameters. International Journal of Hydrogen Energy, Volume 95, 2024, Pages 144-155,
ISSN 0360-3199, https://doi.org/10.1016/j.ijhydene.2024.11.227.
John H Jacobs, Nancy Chou, Kaylan H McKelvie, Jerry A Commodore, Ruohong Sui, Kevin L Lesage, Kyle G Wynnyk, Ye Xiao, Mark C Biesinger, Josephine M Hill, Robert A Marriott, Screening activated carbons produced from recycled petroleum coke for acid gas separation, Carbon Trends (2023) 10, 100243, doi.org/10.1016/j.cartre.2022.100243.

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