2.A.3 Glass Production

Last updated on 07 Mar 2017 10:11 (cf. Authors)

2.A.3 - Glass Production

Short description
Germany's glass industry produces a wide range of different glass types that differ in their chemical composition. Germany's glass sector comprises the following sub-sectors: container glass, flat glass, domestic glass, special glass and mineral fibres (glass and stone wool). The largest production quantities are found in the sectors of container glass and flat glass. Further processing and treatment of glass and glass objects are not considered.
Information about the key source relevance can be found in [[2-a-mineral-industry | 2.A Mineral Industry]].

Method
The emissions are calculated via a higher Tier method resembling a Tier 2 method, as the activity rates are tied to specific emission factors for different glass types.

Activity data
The production figures are taken from the regularly appearing annual reports of the Federal Association of the German Glass Industry (Bundesverband Glasindustrie; BV Glas). "Production" refers to the amount of glass produced, which is considered to be equivalent to the amount of glass melted down.
Emission factors
The procedure used to determine emission factors for the various glass types involved and the pertinent emissions is described in detail in reports of research projects (Report-No. 001264, search "UBA-FB 001264" in [http://doku.uba.de] => OPAC => Signatur). The emission factors were calculated for the various industry sectors. The factors vary annually in keeping with industry monitoring, not only as steady trends, but as time ranges. Ranges below are given as averages over all glass types, not over time:

pollutant Name of Category EF unit current Trend
NOx glass production 1.0-3.4 kg/t constant
SO2 glass production 0.39-1.9 kg/t constant
NMVOC glass production 0.96 kg/t constant
NH3 glass production 0.03-0.7 kg/t constant
TSP glass production 0.02-0.04 kg/t constant
PM10 glass production 0.01-0.03 kg/t constant
PM2.5 glass production 0.01-0.02 kg/t constant

Trends in emissions

Trends in emissions correspond to trends of emission factors and of activity data. Resulting trends are not homogenously but rather complex.

Recalculations

Recalculations were necessary due to updated activity data for the last reported year.

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