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Characterization of Bio-oil, Bio-char, and Pyro-gas derived from cotton stalk slow pyrolysis - as sustainable energy sources

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Title Characterization of Bio-oil, Bio-char, and Pyro-gas derived from cotton stalk slow pyrolysis - as sustainable energy sources
 
Creator Shah, Jinesh B
Valaki, Janak B
 
Subject Bio-oil
Cotton stalk
Bio-Char
Pyro-gas
Non-edible agro residues
Sustainable fuel
 
Description 380-389
The untapped energy present in this cotton stalk residue is one of the major environmental threats due to its field
burning. In this research paper, slow pyrolysis process has been performed on cotton stalk having particle size 0.85 mm at
300°C, 400°C, and 500°C, at 10°C/min heating rate and 1-hour residence time. The process produced bio-oil, bio-char and
pyro-gas. Physiochemical properties, GC-MS analysis, stability analysis and miscibility analysis of bio-oil have been carried
out to ensure its feasibility as energy source. To ensure suitability of bio-char as soil nutrient and energy sources, its
elemental analysis, metal element analysis and microscopic examination have been performed. Pyro-gas is characterized to
find its suitability as energy source for heating purpose during pyrolysis process by recirculating. The maximum yield for
bio-oil and Pyro-gas is 36.60 wt.% and 25.25 wt.%, respectively at 500°C, while maximum yield for char is 58.54 wt. % at
300°C. Result of physiochemical properties of bio-oil reveals remarkable variation as compare to diesel whereas GC-MS
analysis found bio-oil as complex mixture. 0.02349 cst/hr. aging rate of bio-oil shows good stability at room temperature.
Physiochemical properties of bio-oil vary with pure diesel causes phase separation of bio-oil and diesel during blending.
Bio-oil - diesel Stabilized emulsion has been achieved by addition of 6 wt. % of n-butanol as co-solvent. Characterization
and microscopic examination of bio-char favours usage of char as soil nutrient and energy substitute. The Pyro-gas analysis
confirms its suitability as energy substitute during entire process, as it contains a substantial amount of carbon dioxide and
methane.
 
Date 2022-07-26T10:42:08Z
2022-07-26T10:42:08Z
2022-07
 
Type Article
 
Identifier 0975-0991 (Online); 0971-457X (Print)
http://nopr.niscpr.res.in/handle/123456789/60153
 
Language en
 
Publisher NIScPR-CSIR, India
 
Source IJCT Vol.29(4) [July 2022]