Pyrolysis liquids pesticide

Use of Pyrolysis Liquids as Pesticide Kari Tiilikkala MTT Agrifood Research Finland

Slow pyrolysis • Slow pyrolysis is a thermal conversion process where the wood or biomass material is slowly heated in the absence of air or oxygen up to final temperature of about 500 • Between 100 ºC and 200 ºC, noncombustible products, such as carbon dioxide and water vapor, and also traces of organic compounds, are produced • at 200 – 300 ºC production of acetic acid !!

• Slow pyrolysis (carbonization, destructive distillation) process yields solid char (charcoal), volatile condensable compounds (distillates) and volatile noncondensable gases.

Feedstock • All kinds of organic materials:

Mobile retort is one option

Products • The vapours produced can be condensed to give tar (wood tar or sedimentation tar) • and an aqueous layer (pyroligneous acid).

• The retort process yields about 35-40 wt% charcoal, • 40-45 % distillates and • 15-25 wt% non-condensable gases .

Condensed liquid

Pyrolysis liquid, mixture of chemicals

Pyrolysis liquid for Weed control

Acetic acid is the active ingredient

Pyrolysis liquid for insect control • Aphids and other soft skinned species

Pyrolysis liquid to repel pests

Strong odor

Pyrolysis liquid to control fungi

Biodegradable, environmentally friendly

How to apply pyrolysis liquids = Lifelong learning