A weighted average global process model based on two−stage kinetic scheme for biomass combustion

Fang, Xiang; Jia, Li; Yin, Liaofei

doi:10.1016/j.biombioe.2012.11.011

Cited by 54 publications

(29 citation statements)

References 20 publications

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“…This fact has made its development and utilization attractive worldwide owing to energy crisis problems [2] and increasing environmental concerns [3,4]. In consequence, determining the way to make efficient use of the energy from biomass has become a top priority, and it is expected to play an important role in the European target of at least 20% of gross energy consumption to come from renewable energy sources by 2020 [5,6].…”

Section: Introductionmentioning

confidence: 99%

Determination and comparison of combustion kinetics parameters of agricultural biomass from olive trees

et al. 2015

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a b s t r a c tThermogravimetric curves in air, measured for the different types of agricultural residues from olive trees (leaves, pruning and wood) at different heating rates (5, 10, 20, 40, 100 K/min), are subjected to kinetic evaluation by model-based and model-free methods. It is shown that the combustion process in the samples analyzed can be divided into three stages: water removal, roasting phase and char decomposition. At every stage, the activated energy varies with the mass conversion for the kinetic models considered. Its value was determined by the model-free methods, of which FlynneWalle Ozawa and KissingereAkahiraeSunose were the most appropriate for this purpose and resulted in similar values of activated energy. Once the activation energy was determined, the order of the reactions and the frequency factors of each stage were calculated by means of the CoatseRedfern model-based method in order to complete the determination of the kinetic triplet. From the results obtained, it was deduced that the most feasible reaction order was one.

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Section: Introductionmentioning

confidence: 99%

Determination and comparison of combustion kinetics parameters of agricultural biomass from olive trees

et al. 2015

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“…TGA and DTA are very useful tools for assessing the thermal characteristics of biomass and its components under a controlled environment and is often associated with kinetic modeling (Magdziarz and Wilk, 2013;Branca and Di Blasi, 2015). Numerous papers have concerned with the kinetics of combustion of lignocellulosic biomass, in terms of rice husk (Saldarriaga et al, 2015), corn straw (Fang et al, 2013), miscanthus (Jayaraman and Gökalp, 2015) and date palm wastes (Sait et al, 2012). Despite the literatures regarding lignocellulosic biomass is abundant, only a limited number of studies are concerned about the combustion of microalgae.…”

Section: Introductionmentioning

confidence: 99%

Combustion behavior and kinetics of low-lipid microalgae via thermogravimetric analysis

Gai

Liu

Han

et al. 2015

Bioresource Technology

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h i g h l i g h t sCombustion of low-lipid microalgae C. pyrenoidosa and S. platensis were studied. Chemical functional groups present in two microalgae were investigated via FTIR. Apparent activation energies for combustion of the two microalgae were calculated. C. pyrenoidosa has a higher reactivity compared to S. platensis during combustion. a r t i c l e i n f o t r a c tThermogravimetric analysis and differential thermal analysis were employed to investigate combustion characteristics of two low-lipid microalgae, Chlorella pyrenoidosa (CP) and Spirulina platensis (SP) and isoconversional Starink approach was used to calculate the kinetic parameters in the present study. The results showed that three stages of mass loss, including dehydration, devolatilization and char oxidation, were observed during combustion of both of two low-lipid microalgae. The whole weight loss of combustion of two microalgae was both shifted to higher temperature zones with increased heating rates from 10 to 40 K/min. In the 0.1-0.9 conversion range, the apparent activation energy of CP increased first from 51.96 to 79.53 kJ/mol, then decreased to 55.59 kJ/mol. Finally, it slightly increased to 67.27 kJ/mol. In the case of SP, the apparent activation energy gradually increased from 68.51 to 91.06 kJ/mol.

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“…Há vários trabalhos na literatura que reportam resultados semelhantes sobre a combustão de biomassa em atmosfera de ar sintético (20%O 2 /80%N 2 ) (Fang et al, 2013;Wang et al, 2012;Ramajo-Escalera et al, 2006;Munir et al, 2009;Khatami et al, 2012).…”

Section: Análise De Emissões Dos Gases Provenientes Da Queima Das Amounclassified

“…Para o bagaço puro, após a perda da umidade que ocorre entre 30 e 100 °C, observamse dois eventos principais de perda de massa que são característicos de materiais lignocelulósicos como descrito anteriormente (Quensanga e Picard, 1988;Aiman e Stubington, 1993;Byrne e Nagle, 1996;Yang et al, 2007, Guimarães et al, 2009e Souza et al, 2006. Esse efeito é causado devido à elevada temperatura de ignição do carvão que faz com que as maiores taxas de reação concentrem-se principalmente na fase de combustão do carbono fixo (Fang et al, 2013). Portanto, a queima de bagaço de cana é mais intensa comparada a do carvão.…”

Section: Efeito De Sinergismounclassified

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Emprego de análise térmica e forno tubular de queda livre (DTF) para estudar a eficiência térmica de carvões minerais, bagaço de cana-de-açúcar e suas misturas

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A weighted average global process model based on two−stage kinetic scheme for biomass combustion

Cited by 54 publications

References 20 publications

Determination and comparison of combustion kinetics parameters of agricultural biomass from olive trees

Determination and comparison of combustion kinetics parameters of agricultural biomass from olive trees

Combustion behavior and kinetics of low-lipid microalgae via thermogravimetric analysis

Emprego de análise térmica e forno tubular de queda livre (DTF) para estudar a eficiência térmica de carvões minerais, bagaço de cana-de-açúcar e suas misturas

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