Ammonium sulphate from digestate by "Biogas Bree" process (ID:274)

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Input material
mix of manure, organic wastes (cfr Vlarema (Flanders) and positive list FOD (B)) and/or energy maize
Nutrient content info

 8% N% (fw), 25% SO4 (fw)

Status
Available on the market
Application dose
1m³ t/ha (depending on soil, season, crop,…)
Type of farming
conventional
low input
Keywords
ammonia sulphate
mineral fertilizer statute
high efficiency
drag hose or spoked wheel application
Product description

Biogas Bree uses a chemical air scrubber to limit ammonia emissions of the drying of (solid fraction of) digestate. Washing  the  exhaust  air  with  sulphuric  acid  leads  to  the  by-product:  drainage  water  or  ammonia  sulphate considered a mineral NS fertiliser. Sedimentation in a storage tank allows a pure, transparent ammonia sulphate to be extracted without risking congestion at application (cfr infra). Biogas Bree’s as pH is usually between 4 and 5,5 depending on the adjustment of the acid scrubber. Although the EC of ammonium sulphate is high and the pH is fairly low, both parameters did not reduce crop yield according to several field trials. The main reason is that due to the  high  N  concentration  in  ammonium  sulphate  compared  to  animal  manure  only  low  amounts  are  applied. Furthermore,  the  soil  also  has  a  buffer  capacity  to  neutralize  the  potentially  low  pH  of  ammonium  sulphate.  Of course, attention should be taken when applying ammonium sulphate to salt sensitive crops. On the other hand there are crops that can handle high EC values of ammonium sulphate and also benefit  from sulphur application (e.g cabbages).

The ammonium sulphate (AS) contains around 8 % N and 25% SO4. This allows the AS to perfectly meet the nitrogen and especially sulphur requirements of crops, e.g. cabbage crops, lettuce, potato, onions, celery, leek, cereals, sugar beets, maize, etc. Contents of pH, nitrogen or sulphur can be further optimalised by mixing with e.g. urean (classic liquid nitrogen fertilizer).  Based on soil analysis results (N & S), the  crop requirement and the soil type, etc. the correct dosage should be calculated. Commonly however the dosage often fluctuates around 1m³ per hectare. In order to make optimum use of its effect as a fertiliser, it is desirable to make the product very specifically available to the plant, either at the start of cultivation or in the form of additional fertilisation. In order to avoid the risk  of  burning  during  the  administration  of  ammonium  sulphate,  especially  in  windy  and  sunny  weather  new specific application techniques are used (cfr UNIR project) such as a drag hose or spoked wheel fertilization. The Biogas Bree commodity is locally priced at around 10€/m³ ~= 10€/ha.

Linked technology: Technology for N recovery as dried digestate and ammonia sulphate from solid fraction digestate with "Biogas Bree" chemical scrubbing of exhaust air during drying process, ID: 273

Basic information

Vendor:
Country:
Belgium
Product main category:
Scrubber water and mineral nitrogen concentrates
Product subcategory:
Ammonium nitrate/sulphate

Languages

Summary:

Ammoniumsulfat aus Gärrest nach dem “Biogas-Bree“-Verfahren

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Unterlagen:

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Sulfate d'ammonium fabriqué à partir de digestatvia le procédé « Biogas Bree » 

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Documents:

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Summary:

Sulfato de amonio procedente de digestato obtenido mediante el proceso “Biogas Bree”

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Summary:

Solfato ammonico prodotto da digestato mediante il processo "Biogas Bree" 

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Ammoniumsulfaat uit digestaat door middel van het "Biogas Bree"-proces

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Siarczan amonu z pofermentu w procesie „Biogas Bree”

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Dokumenty:

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Fermentációból származó ammónium-szulfát előállítása „Biogas Bree” eljárással

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