The Wood Ash

There are two types of wood ash generated at the wood fired co-generation power plant.

Bottom or boiler ash is the ash produced by furnaces after combustion; it is course and has a high carbon content.
The fly ash is captured in the plants multi clones and stacks and is finer in texture with finer carbon particles.
The fly ash and the bottom ash are mixed via screw conveyors at the plant and quenched with water before it is delivered to WAI’s disposal site where the mixed wood ash is stockpiled, uncontaminated with any other materials ready for recycling.
Wood Ash Industries mixed wood ash is highly alkaline with a pH of approximately 11.5, very high in carbon content and can potentially be substituted for many carbon applications as well as use in agricultural land applications.



On site wood ash


The wood ash that WAI receives on site contains 38% biochar produced by pyrolysis during the burning of wood and bark. It is suitable as a natural supplement to condition soils. It contains micro nutrients, minerals and organic potash that supplements lawn, vegetable and plant growing needs. It has a high pH suitable for acidic conditions and also works well for odour and slug control and can be used effectively used in composting. The high carbon wood ash material has been approved by the Ontario Ministry of Environment for agricultural land application. The wood ash compacts well and has good absorption qualities. It has a calcium carbonate equivalent of 58, and an agricultural index of 32.

High carbon wood ash is available in its present raw state or can be screened to specifications
For agricultural applications screened wood ash is recommended. WAI is strategically located beside a major highway with rail access close by and can ship to all destinations in North America and internationally if required.


Related Reports:

Soil Acidity & Liming: Clemson University

Wood Ash in the  Garden: Purdue University

Click to view our next page Research with High Carbon Wood Ash