Wood Vinegar Case Study
Wood vinegar producers, such as Boonsong Thansrithong, an agriculturalist with Partners Thailand, recommends that the useable layer of wood vinegar (second from the top) can be harvested with a syringe or siphon after first sucking out the light oil layer on top. Refined wood vinegar does not perish quickly.
Prakrit Khamduangdao is confident that the product can be stored in bottles at least five years.
One does not have to be a charcoal producer to access wood vinegar. Refined wood vinegar is available in many agricultural stores in Thailand with one liter bottles generally selling for 50 baht ($1.72 US).
Composition and Characteristics of Wood Vinegar
Nikhom reports that wood vinegar yield per metric ton (2200 lbs.) of air dry wood is 314 kg (690.8 lbs.).
The product contains approximately 200 components. These include:
• Alcohol (methanol, butanol, amylalcohol)
• Acid (acetic, formic, propioinic, valeric)
• Neutral substances such as formaldehyde, acetone, furfural, …show more content…
Such use includes spraying wood vinegar solution to control insect pests, such as rice stem borer, as well as to reduce bad odors in and around pig pens. Besides appreciating the availability of the product, whether homemade or purchased, like Prakrit Khamduangdao, Sombat is also impressed with the ease of mixing and applying wood vinegar and its overall effectiveness.
Wood Vinegar Concerns?
Thailand’s Department of Agriculture stresses that wood vinegar is safe for organisms in the food chain, including pollinating insects. However, they also point out that the substance is slightly toxic to fish and very toxic to plants if applied excessively. Research at Mae Jo University also shows that wood vinegar with excessive amounts of tar can be harmful to plants.
More Opportunities for Wood Vinegar Research
Wood vinegar was little-known only one decade ago. The current level of interest in the production and usage of wood vinegar among farmers, development agencies, governmental organizations and universities in East and Southeast Asia is on the rise. Fortunately, the product is now receiving