5.B.1 - Composting

Last updated on 18 Jun 2018 10:11 (cf. Authors)

Short description

Within NFR 5.B.1 - Composting emissions from Composting are reported.

NFR Code Name of Category Method AD EF Key Category 1
5.B.1 Composting 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: aerobic treatment (composting) and anaerobic treatment (biogas production).

The aim of the treatment is the production of compost and digestate and therefore the recycling of nutrients and organic matter.

The produced compost and digestate are used as fertilizer or soil improver in agriculture or horticulture and also in private gardening. In Germany about two thirds of the organic waste is treated in composting plants.
For both plant types (composting or digestion), ammonia is an important emission to air.

Method

Emissions from composting 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].

Recalculations

Recalculations have been carried out for 2015 due to improved statistical data compared to the 2017 submission.

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

At the moment, no category specific 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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