5.B.2 - Biological Treatment of Waste - Anaerobic Digestion at Biogas Facilities

Last updated on 05 Mar 2019 12:25 (cf. Authors)

Short description

Within NFR category 5.B.2 - Biological Treatment of Waste - Anaerobic Digestion at Biogas Facilities, ammonia (NH3) emissions from the anaerobic digestion at biogas facilities are reported.

NFR Code Name of Category Method AD EF Key Category 1
5.B.2 Biological Treatment of Waste - Anaerobic Digestion at Biogas Facilities CS NS CS no key category

Separately collected organic waste (biowaste) from e.g. households, public garden and park service, food industry, restaurants, canteens and from agriculture can be treated in two different ways:
aerobically (composting) and anaerobically (biogas production).

The aim of the treatment is the production of digestate, leading to the recycling of nutrients and organic matter.

The produced digestate is used as fertilizer or soil improver in agriculture or horticulture and also in private gardening.
In Germany, about one third of the organic waste is treated in anaerobic digestion plants and ammonia (NH3) is an important emission to air.

Method

Emissions from anaerobic digestion at biogas facilities are not a key source and of minor priority.

Activity data

Activity data for this category are updated by data from the national statistics.

Emission factors

The emission factors used for calculating NH3 emissions are based on emission data from a research project [1].

Uncertainties

The AD from Statistisches Bundesamt have an uncertainty of ±2% whereas the uncertainty for the EF is -18/+920% (ibid.).

Recalculations

Recalculations were not necessary.

For pollutant-specific information on recalculated emission estimates reported for Base Year and 2015, please see the pollutant specific recalculation tables following chapter 8.1 - Recalculations.

Planned improvements

Currently no improvements are planned.


Bibliography
1. Carsten Cuhls, Birte Mähl, Joachim Clemens; gewitra Ingenieurgesellschaft für Wissenstransfer mbH: Ermittlung der Emissionssituation bei der Verwertung von Bioabfällen; https://www.umweltbundesamt.de/publikationen/ermittlung-der-emissionssituation-bei-der; im Auftrag des Umweltbundesamtes, April 2015.
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