possible integration of biogas+bioethanol processing - bioenergybaltic

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possible integration of biogas+bioethanol processing - bioenergybaltic

Utilisation of digestate

• To be recycled as fertilizer, digestate must

have a defined content of macronutrients.

Average samples of digestate must also

be analyzed for heavy metals and

persistent organic contaminants, making

sure that these are not exceeding the

detection limits permitted by law.

• The application of digestate must be done

on the basis of a fertiliser plan, elaborated

for each agricultural field. The experience

shows that an environmental and

economic suitable application of digestate

fulfils the phosphorus requirements of the

crops and completes the nitrogen

requirements from mineral fertiliser.

Al Seadi T. ed.: Biogas from AD, Bioexell training manual; Department of Bioenergy; University of Southern Denmark.

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