NUTRIMAN - NUTRIent MANagement and Nutrient Recovery Thematic Network
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Thematic training material for the use of digestate in Northern Europe has been published
April 29, 2021
Digestate is a wet mixture obtained from an anaerobic digestion process where microorganisms break down organic materials in the absence of oxygen. The anaerobic digestion process converts around 15 % of the feedstock to gas and 85 % remains as organic solid/liquid material. Depending on the composition of the feedstock (biodegradable waste) that is digested, the digester type and process parameters, the composition of digestate may vary strongly. The digestate is usually separated into a solid fraction which contains most of the dry matter, and a liquid fraction which generally has a higher content of mineral N.
Thematic training material for the use of compost in Northern Europe has been published
April 28, 2021
Professional compost is the stable, hygienised and humus-rich end product of a large scale, monitored and controlled process of composting selectively collected organic-biological material. Professional composting is the enhanced and controlled decomposition process of organic waste by the action of aerobic bacteria, fungi, and other organisms. To obtain a good composting process, it is necessary to have a good ratio of carbon-rich input materials and N-rich input materials. Also the temperature, CO2 and moisture content are important parameters. To aerate and homogenise the pile it is necessary to turn it over from time to time.
Thematic training material for the use of compost in Southern Europe has been published
April 27, 2021
Composts significantly increase soil organic matter (SOM) contents, a key soil quality indicator that is on the contrary declining in many regions of the world. There are many compounds within compost that influence the biological process in soil, improving the physical and chemical characteristics. Humates improve the soil structure and then the plant roots could easier penetrate. Improving root growth, the stability of trees increases and the water stress decreases. Additional benefits of compost addition to soil are promoting soil biological activity, reducing erosion losses, decreasing bulk density, improving structural stability, nutrient availability and plant uptake, increasing the water holding capacity.
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