Category Archives: Recycling of Biomass Ashes

Effect on Soil Chemical Parameters

Composts (e. g., from green and kitchen waste) and soil differ in their compo­sition and properties in almost every parameter. The amount of organic carbon, the amount of organic nitrogen, pH, electrical conductivity (EC), cation exchange capacity (CEC), salinity, chloride concentration, and sulfate concentration are higher in compost. Therefore, depending on the quality and quantity of compost, climate, and soil […]

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Fluidised Bed Furnaces

The two types of fluidised bed furnaces commonly distinguished are the circulating fluidised bed furnace and the bubbling fluidised bed furnace. The bed material, usually sand, is finer for the circulating fluidised bed furnace than for the bubbling fluidised bed furnace, 0.3 and 2 mm respectively. Part of the bed is bled out to keep an acceptable chemistry in the […]

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Characterisation of Ash

During incineration of wood and other types of plant biomass, a solid residue is formed, representing about 2% (e. g. willow wood) to 20% (e. g. rice husks) of the input material (Jenkins et al. 1998). Depending on the plant species, the origin of plant, the plant parts used for combustion, the process parameters during incinera­tion and the storage conditions […]

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Acidic Parent Material

The parent material is the geological horizon from which soil horizons form; it is a key factor that in many cases determines the kinds and contents of secondary minerals of soils (Arbestain et al. 1999). Soils that develop from granite are likely to be more acidic than soils developed from calcareous limestone. In tropical and subtropical areas, under rainfall and […]

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Wood Ash Effects on Soil Fauna and Interactions with Carbohydrate Supply: A Minireview

Jouni K. Nieminen Abstract Wood ash effects on soil animals in a boreal forest ecosystem are reviewed focusing on recent results on interactive effects of wood ash and organic amendments, and laboratory microcosms as a tool to understand soil food webs are discussed. Loose wood ash can reduce the populations of enchytraeids, collembo — lans and mites, but increase nematode […]

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Effect on Soil Biological Parameters

Effect on Soil Microorganisms Heterotrophic organisms in the soil are ultimately responsible for ensuring the availability of nutrients for primary production (Wardle 2002). Microorganisms play a very important role in many biogeochemical cycles in agroecosystems including organic matter decomposition, nutrient mineralization, and trace gas emission and consumption (Carney et al. 2004). The principal “players” in the decomposition process are microorganisms, […]

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