Effects of pyrolysis temperature on production and physicochemical characterization of biochar derived from coconut fiber biomass through slow pyrolysis process

Pyrolysis and gasification have gradually become the main means to dispose of automobile shredder residue (ASR), since these methods can reduce the volume and quality of landfill with lower cost and energy recovery can be conducted simultaneously. As the ASR pyrolysis process is integrated, the results of pyrolysis reactions of organic components and the interaction among polymeric components can be clarified by co-pyrolysis thermogravimetric experiments. The results show that the decomposition mechanisms of textiles and foam are markedly changed by plastic in the co-pyrolysis process, but the effect is not large for rubber and leather. This effect is mainly reflected in the pyrolysis temperature and pyrolysis rate. The pyrolytic trend and conversion curve shape of the studied ASR can be predicted by the main polymeric components with a parallel superposition model. The pyrolytic product yields and characterizations of gaseous products were analyzed in laboratory-scale non-isothermal pyrolysis experiments at finished temperatures of 500 °C, 600 °C, and 700 °C. The results prove that the yields of pyrolytic gas products are determined by the thermal decomposition of organic substances in the ASR and final temperature.

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Characterization of Slow Pyrolysis Wood Vinegar and Tar from Banana Wastes Biomass as Potential Organic Pesticides

Journal of Sustainable Development ◽

10.5539/jsd.v10n3p81 ◽

2017 ◽

Vol 10 (3) ◽

pp. 81 ◽

Cited By ~ 7

Author(s):

Godfrey Omulo ◽

Sarah Willett ◽

Jeffrey Seay ◽

Noble Banadda ◽

Isa Kabenge ◽

...

Keyword(s):

Soil Degradation ◽

Physicochemical Analysis ◽

Pyrolysis Process ◽

Recent Past ◽

Slow Pyrolysis ◽

Wood Vinegar ◽

Peak Areas ◽

Organic Pesticides ◽

Banana Wastes

Slow pyrolysis process has been used in the recent past to yield wood vinegar from various biomass wastes with a quest to investigate their chemical composition and possible uses. This study utilizes the abundant banana wastes in Uganda including leaves, pseudostem and peels (mpologoma, kisansa and kibuzi species) in the slow pyrolysis process to yield vinegar, tar and biochar. Characterization of these banana wastes’ vinegar and tar fractions were investigated via chromatographic and physicochemical analysis. The principle compounds present in the banana wastes vinegar and tar as per percentage peak areas were acids (68.6%), alcohols (62.5%), ketones (27.6%), phenols (25.7%) and furans (21.8%). The products characterization indicate that vinegar and tar contain compounds that can be used as pesticides, termiticide, fungicides, insect repellants, anti-leaching and soil degradation agents. Thus wood vinegar and tar can have sustainable impacts on agricultural sectors and chemical industries especially for developing countries.

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Effects of Briquetting and High Pyrolysis Temperature on Hydrolysis Lignin Char Properties and Reactivity in CO-CO2-N2 Conditions

Minerals ◽

10.3390/min11020187 ◽

2021 ◽

Vol 11 (2) ◽

pp. 187

Author(s):

Aki Koskela ◽

Anne Heikkilä ◽

Davide Bergna ◽

Justin Salminen ◽

Timo Fabritius

Keyword(s):

Mass Loss ◽

Pyrolysis Temperature ◽

Calorific Value ◽

Metallurgical Coke ◽

Hydrolysis Lignin ◽

Pyrolysis Process ◽

Fixed Carbon ◽

Slow Pyrolysis ◽

N2 Atmosphere ◽

Gas Atmosphere

Carbonaceous reductants for pyrometallurgical applications are usually obtained from fossil-based sources. The most important properties of the reductants greatly depend on the application and the feeding of the reductant into the process. However, the mechanical strength, calorific value, fixed carbon content, and reactivity of the reductant are the properties that usually define the applicability of the reductant for different processes. The reactivity of the biochars is usually high in comparison to metallurgical coke, which may restrict the applicability of the biochar in reduction processes. One cause of the higher reactivity is the higher surface area of the biochars, which can be suppressed with agglomeration treatment, e.g., briquetting. In this work, hydrolysis lignin was used for slow pyrolysis experiments to produce biochars. The biochars were pyrolyzed in briquetted form and in as-received form at various temperatures. The reactivity values of the biochars were tested in dynamic reactivity tests in a CO-CO2-N2 gas atmosphere at temperatures of up to 1350 °C. It was found that the yield of the hydrolysis lignin char only decreased by 3.36 wt% when the pyrolysis temperature was elevated from 600 to 1200 °C, while a decrease in yield of 4.88 wt% occurred when the pyrolysis temperature was elevated from 450 to 600 °C. The mass loss of hydrolysis lignin biochar in the reactivity experiment in CO-CO2-N2 atmosphere was significantly decreased from 79.41 wt% to 56.80 wt% when the hydrolysis lignin was briquetted before the slow pyrolysis process and the temperature of the pyrolysis process was elevated from 600 to 1200 °C. This means that the mass loss of the material was suppressed by 22.61 wt% due to the higher pyrolysis temperature and briquetting process.

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Generation and Characterization of Bio-oil Through Slow Pyrolysis Process from Jatropha Curcas Shell

Recent Advances in Mechanical Infrastructure - Lecture Notes in Intelligent Transportation and Infrastructure ◽

10.1007/978-981-32-9971-9_15 ◽

2019 ◽

pp. 143-151

Author(s):

Vikram Rajai ◽

Hiren Shah ◽

Dhaval Patel ◽

Himanshu Patel ◽

Subarna Maiti

Keyword(s):

Jatropha Curcas ◽

Pyrolysis Process ◽

Slow Pyrolysis ◽

Bio Oil

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Characterization of Slow Pyrolysis Biochars: Effects of Feedstocks and Pyrolysis Temperature on Biochar Properties

Journal of Environmental Quality ◽

10.2134/jeq2011.0070 ◽

2012 ◽

Vol 41 (4) ◽

pp. 990-1000 ◽

Cited By ~ 465

Author(s):

Stefanie Kloss ◽

Franz Zehetner ◽

Alex Dellantonio ◽

Raad Hamid ◽

Franz Ottner ◽

...

Keyword(s):

Pyrolysis Temperature ◽

Slow Pyrolysis

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Synthetic fuel production from shredded scrap waste

Revista Facultad de Ingeniería ◽

10.19053/01211129.v26.n44.2017.5784 ◽

2017 ◽

Vol 26 (44) ◽

pp. 133

Author(s):

Iván Ernesto Barragán-Gutiérrez ◽

Alfonso López-Díaz ◽

Wolfgang Krumm

Keyword(s):

Internal Combustion Engines ◽

Physicochemical Characterization ◽

Combustion Engines ◽

Pyrolysis Process ◽

Synthetic Fuels ◽

Fuel Production ◽

Processing Technologies ◽

Innovation Project ◽

Definition Of

This technological innovation project involved material identification, and design, installation, implementation, and evaluation of a pilot plant with capacity of 10 t per batch to recover materials and produce synthetic fuels (oil, syngas and solid) from shredded scrap waste. The results showed the proper way to separate materials (metals, and organic and inert compounds), and to perform the pyrolysis process to produce gas, oil, and coke as synthetic fuels from organic waste. The process started with the physicochemical characterization of the waste, followed by the selection of separation, sorting and processing technologies, and the definition of pyrolysis process parameters. Finally, the synthetic fuels were characterized, and uses for the furnace billet, ladle preheating, internal combustion engines, and auto generation were suggested. The results showed 82 % recovery of magnetic and non-magnetic metals, and production of synthetic fuels with PCI between 20 650 and 36 900 kJ/kg.

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