Characterization of products derived from the high temperature flash pyrolysis of microalgae and rice hulls

Palumbo, Aaron W.; Bartel, Christopher J.; Sorli, Jeni C.; Weimer, Alan W.

doi:10.1016/j.ces.2018.11.029

Cited by 17 publications

(5 citation statements)

References 41 publications

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“… 21 During the flash pyrolysis, the condensable volatile compounds formed are further cracked or polymerized to produce syngas or biochar respectively due to the relatively higher treatment temperature and heating rate. 22 Residence time and biomass conditions are the key factors to be considered when selecting a suitable reactor. The fixed-bed reactor is the most common reactor used for slow, catalytic and microwave pyrolysis.…”

Section: Production and Characterization Of Biocharmentioning

confidence: 99%

Emerging application of biochar as a renewable and superior filler in polymer composites

et al. 2022

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Section: Production and Characterization Of Biocharmentioning

confidence: 99%

Emerging application of biochar as a renewable and superior filler in polymer composites

et al. 2022

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“…Pulverized biomass in stationary pulverized fuel applications is one of key technological options for biomass utilization . Much research progress has been made recently on pulverized biomass in stationary applications, on various aspects including pyrolysis, , combustion, properties of pyrolysis products, − volatiles and char reactions, − soot formation, , transformation of inorganic species, , and ash related issues, , just to name a few.…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, biomass powders may experience melting and deformation during rapid pyrolysis under such conditions. While several previous studies investigated the effect of pyrolysis temperature on the shape of char particles , and described char particle shape, no work has been done to clarify the effect of biomass particle size on char particle shape at 1300 °C.…”

Section: Introductionmentioning

confidence: 99%

Rapid Pyrolysis of Pulverized Biomass at a High Temperature: The Effect of Particle Size on Char Yield, Retentions of Alkali and Alkaline Earth Metallic Species, and Char Particle Shape

et al. 2020

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Fast pyrolysis of two biomass materials (mallee wood and pine wood) at 1300 °C was conducted in a novel drop tube furnace (DTF) with a double-tube configuration, which enables the direct determination of char yields. Three particle sizes (90–106, 150–250, and 250–355 μm) were considered for investigating the effect of particle size on char yield, retention of alkali and alkaline earth metallic (AAEM) species, and shape of derived char particles from pyrolysis at such a high temperature. The experimental results show that the char yield increases with the biomass particle size and that the use of the ash tracer method with total ash, Mg, and Ca as a tracer can substantially overestimate the char yield by as high as 4.0% (absolute error) at actual char yields of mere ∼1.0–3.4%. Additionally, a decrease in particle size significantly enhances the release of AAEM species during biomass pyrolysis. Such observations can at least be attributed to the considerably higher heating rate experienced by small particles during rapid pyrolysis, which is estimated to be 5.4 times of that experienced by large particles. For mallee wood, rapid pyrolysis of small biomass particles (90–106 μm) forms nearly spherical char particles, while that of large biomass particles (250–355 μm) tends to retain their elongated shape. This is due to extensive melting of small particles during rapid pyrolysis at 1300 °C, while large biomass particles only experience partial melting. For pine wood, particle size has no obvious effect on particle shape of pine chars that are mainly cenospheres with smooth surfaces, demonstrating severe melting of the cell structure.

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“…There are several ways to convert biomass into energy such as: the thermochemical and bio-chemical processes [8]. The thermo-chemical conversion technology is dominant because of its high efficiency conversion to gaseous, liquid and solid products under thermal conditions [9] [10]. In this context, we are interested in thermochemical conversion and more precisely in slow pyrolysis which aims at maximizing the production of solid biofuel (biochar).…”

Section: Introductionmentioning

confidence: 99%

“…Thermogravimetric analysis (TGA) is a common technique that is generally used to study the biomass combustion behavior and allow the kinetic parameters estimation, including activation energy (Ea), reaction order and pre-exponential factor using the Coats-Redfern method. Many researchers have used TGA to study the biomass pyrolysis process [6,[8][9][10][11][12] or biomass combustion process [13]- [15]. .…”

Section: Introductionmentioning

confidence: 99%

A study on the biomass wastes' combustion process and their biochar

Hadey

Malika

Alami

et al. 2020

Preprint

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Peanut shells (PS) and sugar canes (SC) constitute an attractive and an energetic biomass source in Morocco since they are renewable, abundant and available. this work seeks to study the thermal decomposition of these biomass samples and their derived solid biofuel under oxidative atmosphere, and it also attempts to determine their kinetic and thermodynamic combustion parameters . The solid biofuel samples were produced by slow pyrolysis at a temperature of 400°C. Based on the TGA results, the biomass combustion process goes through three stages which are the evaporation of moisture, devolatilization and char formation. For the biochar, it takes two steps that corresponds to the evacuation of water and to the coal combustion. Kinetic parameters of each step are evaluated using Coats-Redfern method, and the thermodynamic parameters are calculated. The results have shown that biochar is less reactive than its original biomass, and that the biomass samples are the most reactive ones in the coal oxidation stage. We have also found that the biomass samples present a different combustion process. These results are useful for the configuration and the design of feasible systems for the conversion of this biomass into energy.

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Characterization of products derived from the high temperature flash pyrolysis of microalgae and rice hulls

Cited by 17 publications

References 41 publications

Emerging application of biochar as a renewable and superior filler in polymer composites

Emerging application of biochar as a renewable and superior filler in polymer composites

Rapid Pyrolysis of Pulverized Biomass at a High Temperature: The Effect of Particle Size on Char Yield, Retentions of Alkali and Alkaline Earth Metallic Species, and Char Particle Shape

A study on the biomass wastes' combustion process and their biochar

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