The interplay between ternary molten carbonate and biomaterials during pressurized slow pyrolysis

2022 ◽  
Author(s):  
Tahereh Jalalabadi ◽  
Behdad Moghtaderi ◽  
Jessica Allen
Keyword(s):  
Woody Biomass ◽  
Thermochemical Conversion ◽  
Molten Carbonate ◽  
Slow Pyrolysis ◽  
Effect Of Pressure

The effect of pressure on the thermochemical conversion of woody biomass and lignin in the presence of carbonate additives has been investigated at moderate temperatures (600 and 800°C). A ternary...

The impact of carbonate salts on char formation and gas evolution during the slow pyrolysis of biomass, cellulose, and lignin

2020 ◽  
Vol 4 (12) ◽  
pp. 5987-6003 ◽  
Author(s):  
Tahereh Jalalabadi ◽  
Matthew Drewery ◽  
Priscilla Tremain ◽  
John Wilkinson ◽  
Behdad Moghtaderi ◽  
...  
Keyword(s):  
Woody Biomass ◽  
Gas Evolution ◽  
Slow Pyrolysis ◽  
Char Formation ◽  
Pyrolysis Of Biomass ◽  
Carbonate Salts ◽  
The Impact

This study deals with the modification of chars derived from different biomass samples (woody biomass, cellulose and lignin).

scholarly journals Analytical Investigations of Kinetic and Heat Transfer in Slow Pyrolysis of a Biomass Particle

2013 ◽  
Vol 2 (2) ◽  
pp. 105-115
Author(s):  
S.J Ojolo ◽  
C.A. Osheku ◽  
M.G Sobamowo
Keyword(s):  
Heat Transfer ◽  
Analytical Solutions ◽  
Experimental Results ◽  
Analytical Models ◽  
Thermochemical Conversion ◽  
Percentage Error ◽  
Slow Pyrolysis ◽  
Average Percentage ◽  
Transfer Equations ◽  
Standard Deviations

The utilization of biomass for heat and power generation has aroused the interest of most researchers especially those of energy .In converting solid fuel to a usable form of energy,pyrolysis plays an integral role. Understanding this very important phenomenon in the thermochemical conversion processes and representing it with appropriate mathematical models is vital in the design of pyrolysis reactors and biomass gasifiers. Therefore, this study presents analytical solutions to the kinetic and the heat transfer equations that describe the slow pyrolysis of a biomass particle. The effects of Biot number, temperature and residence time on biomass particle decomposition were studied. The results from the proposed analytical models are in good agreement with the reported experimental results. The developed analytical solutions to the heat transfer equations which have been stated to be “analytically involved” showed average percentageerror and standard deviations 0.439 and 0.103 from the experimental results respectively as compared with previous model in literature which gives average percentage error and standard deviations 0.75 and 0.106 from the experimental results respectively. This work is of great importance in the design of some pyrolysis reactors/units and in the optimal design of the biomass gasifiers.

scholarly journals Acaricidal Properties of Bio-Oil Derived From Slow Pyrolysis of Crambe abyssinica Fruit Against the Cattle Tick Rhipicephalus microplus (Acari: Ixodidae)

2021 ◽  
Vol 12 ◽  
Author(s):  
Camila Mattos ◽  
Juliana Andrade ◽  
Bruno Salarini Peixoto ◽  
Nayara Luiza Tavares Moraes ◽  
Marcia Cristina da Cunha Veloso ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Gonadosomatic Index ◽  
Rhipicephalus Microplus ◽  
Egg Laying ◽  
Gas Chromatography Mass Spectrometry ◽  
Thermochemical Conversion ◽  
Cattle Tick ◽  
Crambe Abyssinica ◽  
Slow Pyrolysis ◽  
Bio Oil

Slow pyrolysis is a process for the thermochemical conversion of biomasses into bio-oils that may contain a rich chemical composition with biotechnological potential. Bio-oil produced from crambe fruits was investigated as to their acaricidal effect. Slow pyrolysis of crambe fruits was performed in a batch reactor at 400°C and chemical composition was analyzed by gas chromatography-mass spectrometry (GC-MS). The bio-oil collected was used in bioassays with larvae and engorged females of the cattle tick Rhipicephalus microplus. Biological assays were performed using the larval packet test (LPT) and adult immersion test. The GC-MS of crambe fruit bio-oil revealed mainly hydrocarbons such as alkanes and alkenes, phenols, and aldehydes. The bio-oil in the LPT exhibited an LC90 of 14.4%. In addition, crambe bio-oil caused female mortality of 91.1% at a concentration of 15% and a high egg-laying inhibition. After ovary dissection of treated females, a significant reduction in gonadosomatic index was observed, indicating that bio-oil interfered in tick oogenesis. Considering these results, it may be concluded that slow pyrolysis of crambe fruit affords a sustainable and eco-friendly product for the control of cattle tick R. microplus.

The Characteristics of Products from Pyrolysis of Seaweed in Molten Carbonates

2019 ◽  
Vol 62 (3) ◽  
pp. 787-794
Author(s):  
Yi Wei ◽  
Jitong Tang ◽  
Jianbing Ji
Keyword(s):  
Heat Transfer ◽  
Thermogravimetric Analysis ◽  
Molten Salts ◽  
Molten Carbonate ◽  
Gas Generation ◽  
Slow Pyrolysis ◽  
Gaseous Products ◽  
Molten Carbonates ◽  
Bio Oil ◽  
Terrestrial Biomass

Abstract. The characteristics of the seaweed (SH) were investigated as a feedstock for slow pyrolysis and molten carbonate (MC) pyrolysis within the temperature range of 400°C to 600°C. SH differs from terrestrial biomass in its constitutional compounds and high N content. According to thermogravimetric analysis, decomposition of proteins and cellulose played the most important role in thermal degradation of SH. The yields and distributions of syngas and bio-oil from MC pyrolysis varied with temperature and were greatly different from those of slow pyrolysis. MC pyrolysis increased gas generation by 10.46 wt% while reducing solids yield from 38.10 wt% to 31.99 wt% at 600°C. Of the gaseous products, H2 was dominant, and CO2 was also prominent. Conversion of tar and acid in the bio-oil was significantly improved in the molten salts medium, while nitrogen content was significantly reduced in the bio-oil. MC pyrolysis minimized the obstacles to heat transfer during pyrolysis by heating the feedstock from both inside and outside. Keywords: Intensification, Molten carbonates, Pyrolysis, Sargassum horneri.

scholarly journals Miscanthus to Biocarbon for Canadian Iron and Steel Industries: An Innovative Approach

Energies ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4493
Author(s):  
Trishan Deb Abhi ◽  
Omid Norouzi ◽  
Kevin Macdermid-Watts ◽  
Mohammad Heidari ◽  
Syeda Tasnim ◽  
...  
Keyword(s):  
Carbon Content ◽  
Ghg Emissions ◽  
Hydrothermal Carbonization ◽  
Ash Content ◽  
Innovative Approach ◽  
Thermochemical Conversion ◽  
Partial Substitution ◽  
Iron And Steel ◽  
Slow Pyrolysis ◽  
Ironmaking Process

Iron-based industries are one of the main contributors to greenhouse gas (GHG) emissions. Partial substitution of fossil carbon with renewable biocarbon (biomass) into the blast furnace (BF) process can be a sustainable approach to mitigating GHG emissions from the ironmaking process. However, the main barriers of using biomass for this purpose are the inherent high alkaline and phosphorous contents in ash, resulting in fouling, slagging, and scaling on the BF surface. Furthermore, the carbon content of the biomass is considerably lower than coal. To address these barriers, this research proposed an innovative approach of combining two thermochemical conversion methods, namely hydrothermal carbonization (HTC) and slow pyrolysis, for converting biomass into suitable biocarbon for the ironmaking process. Miscanthus, which is one of the most abundant herbaceous biomass sources, was first treated by HTC to obtain the lowest possible ash content mainly due to reduction in alkali matter and phosphorous contents, and then subjected to slow pyrolysis to increase the carbon content. Design expert 11 was used to plan the number of the required experiments and to find the optimal condition for HTC and pyrolysis steps. It was found that the biocarbon obtained from HTC at 199 °C for 28 min and consecutively pyrolyzed at 400 °C for 30 min showed similar properties to pulverized coal injection (PCI) which is currently used in BFs due to its low ash content (0.19%) and high carbon content (79.67%).

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