Valorisation of Cranberry Residues through Pyrolysis and Membrane Filtration for the Production of Value-Added Agricultural Products

Pyrolysis is a thermochemical conversion process producing biochar, gas, and bio-oil at high temperatures in an oxygen-free environment. Specific pyrolysis conditions enable a significant production of the aqueous phase of bio-oil, commonly known as wood vinegar. Wood vinegar contains organic compou...

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Bibliographic Details
Published in:Energies (Basel) 2023-11, Vol.16 (23), p.7774
Main Authors: Bennani, Ghita, Ndao, Adama, Konan, Delon, Brassard, Patrick, Le Roux, Étienne, Godbout, Stéphane, Adjallé, Kokou
Format: Article
Language:English
Subjects:
Acetic acid
Acids
Agriculture
bio-oil
Biodiesel fuels
Biofuels
bioherbicide
Biomass
Bioremediation
biostimulation
Cellulose
cranberry
Electric properties
Gases
Germination
Lignin
Membranes
Molecular weight
Organic acids
Permeability
Pesticides
Plant growth
Pyrolysis
R&D
Research & development
Vinegar
Viscosity
wood vinegar
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Summary:Pyrolysis is a thermochemical conversion process producing biochar, gas, and bio-oil at high temperatures in an oxygen-free environment. Specific pyrolysis conditions enable a significant production of the aqueous phase of bio-oil, commonly known as wood vinegar. Wood vinegar contains organic compounds such as acetic acid and phenols derived from bio-oil. These compounds have herbicidal properties against weeds and biostimulant properties for plant growth. This study reveals the potential for efficient management of cranberry residues consisting of stems and leaves by producing wood vinegar through pyrolysis at 475 °C with a humidity level of 20%. Membrane separation of wood vinegar, using nanofiltration (NF) and reverse osmosis (RO) membranes, yielded phenols in the retentate and acetic acid in the permeate with respective yields of 44.7% with NF membrane and 45% with RO membrane. Biostimulation tests using 2% of the retentate showed significant germination rates for basil, sage, and parsley plants. Additionally, using 40 mL of the wood vinegar permeate (30 mL injected at the base and 10 mL sprayed on the leaves) resulted in leaf damage, measured by conductivity (leakage of electrolytes released by the leaves), of 62.3% and 20.5% respectively for quack grass and white clover, two weeds found in cranberry production.
ISSN:1996-1073
1996-1073
DOI:10.3390/en16237774