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European ash in flower Narrow-leafed ash (Fraxinus angustifolia) shoot with leaves. Fraxinus (/ ˈ f r æ k s ɪ n ə s /), commonly called ash, is a genus of plants in the olive and lilac family, Oleaceae, [4] and comprises 45–65 species of usually medium-to-large trees, most of which are deciduous trees, although some subtropical species are evergreen trees.
The burning of wood results in about 6–10% ashes on average. [2] The residue ash of 0.43 and 1.82 percent of the original mass of burned wood (assuming dry basis, meaning that H 2 O is driven off) is produced for certain woods if it is pyrolized until all volatiles disappear and it is burned at 350 °C (662 °F) for 8 hours.
White ash is one of the most used trees for everyday purposes and, to keep up with high demand, is cultivated almost everywhere possible. The wood is white and quite dense (within 20% of 670 kg/m 3), [24] strong, and straight-grained. Its species produces an ideal, atypical dominant excurrent structured crown.
Use a light touch because adding too much wood ash to your compost can make it too alkaline and slow down decomposition. Related: The 9 Best Compost Bins of 2024, According to Research and Testing
The color of the ash comes from small proportions of inorganic minerals such as iron oxides and manganese. The oxidized metal elements that constitute wood ash are mostly considered alkaline. For example, ash collected from wood boilers is composed of [6] 17–33% calcium in the form of calcium oxide (CaO)
The commercial application of Oregon ash has been limited due to the much more abundant eastern ashes. The young and fast-growing wood of ash is more elastic and more favorable for handles and baseball bats because it has wider growth rings. The wood of old ash trees in general are valued for firewood due to their fine grain and brittleness.
Layer 10 is ash with biologically produced silicon, aluminum, iron, and potassium, but wood ash remnants such as siliceous aggregates are missing. Among these are possible hearths "represented by finely laminated silt and clay interbedded with reddish-brown and yellow-brown fragments of organic matter, locally mixed with limestone fragments and ...
Most wood ash is primarily made up of calcium carbonate (CaCO 3), which is used in many glaze recipes. The ash also contains potassium carbonate (K 2 CO 3), phosphates, and other metals; however, the ratio of these chemicals depend on the location, soil, and type of wood the ash came from. The varying chemical compositions of ashes used to make ...