Assessment of agro-industrial residues for bioenergy potential by investigating thermo-kinetic behavior in a slow pyrolysis process

The aim of this study was to assess the possibility of using furniture waste for smokeless fuel production using the pyrolysis process. Four types of wood-based wastes were used in the pyrolysis process: pine sawdust (PS), chipboard (CB), medium-density fiberboard (MDF), and oriented strand board (OSB). Additionally, the slow and fast types of pyrolysis were compared, where the heating rates were 15 °C/min and 100 °C/min, respectively. Chemical analyses of the raw materials and the pyrolysis product yields are presented. A significant calorific value rise was observed for the solid pyrolysis products (from approximately 17.5 MJ/kg for raw materials up to approximately 29 MJ/kg for slow pyrolysis products and 31 MJ/kg for fast pyrolysis products). A higher carbon content of char was observed in raw materials (from approximately 48% for raw materials up to approximately 75% for slow pyrolysis products and approximately 82% for fast pyrolysis products) than after the pyrolysis process. This work presents the possibility of utilizing waste furniture material that is mostly composed of wood, but is not commonly used as a substrate for conversion into low-emission fuel. The results prove that the proposed solution produced char characterized by the appropriate properties to be classified as smokeless coal.

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Energy Balance Analysis on the Slow Pyrolysis Process of Cattle Manure

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.392.531 ◽

2013 ◽

Vol 392 ◽

pp. 531-534 ◽

Cited By ~ 1

Author(s):

Xuan Liu ◽

Zi Fu Li ◽

Yao Zhong Zhang

Keyword(s):

Energy Efficiency ◽

Energy Resource ◽

Cow Manure ◽

Pyrolysis Process ◽

Slow Pyrolysis ◽

Energy Value ◽

Balance Analysis ◽

Process Energy ◽

In The Beginning ◽

Energy Balances

Energy balances are increasingly used to assess the energy efficiency and productivity of production. In this study, energy balances for the slow pyrolysis process of cow manure were calculated. The results show that, for cow manure dry matter, all the recovered energy value from the pyrolysis process products is about 12 times of the energy needs for the dry matters pyrolysis process. But the moisture has a noteworthy impact on the energy efficiency. When the input moisture is 60.85%, the recovered energy value from all products is approximately equal to the process energy consumption, and if only using non-condensable gases (NCG) as the energy resource, the input moisture should lower than 36.63%. Meanwhile, if the vapor could be separated in the beginning phase of pyrolysis process, the energy efficiency will be greatly improved, e.g. if removed all water vapor out the system at 423K, the former two data could be 71.43% and 48.18%, which is 10.58% and 11.45% higher than the process without vapor separation handling.

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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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