2.A.ii Other Mineral Industries

Last updated on 24 Jan 2013 17:05 by Kevin Hausmann

The other mineral industries are minor industries with specific relevant emissions to refer here to Soda Ash Production (2.A.4), Asphalt Roofing (2.A.5), Road Paving (2.A.6), Construction (2.A.7.b) and the Salt Production (2.A.7.d). The minor relevancy of this categories can be seen in the key analysis where only category of Construction for emissions of particles (PM) is listed:

Source pollutant aspect meaning
2.A.7.b Construction PM10 Trend last key category

All categories in Detail:

2.A.4 - soda ash production

Short description
In Germany, soda ash is produced only chemically. The country has 3 production facilities, all of which use the Solvay process. In former years there were facilities with higher emissions from ammonia in new german Länder, emissions of NH3 after 1992 occur at a lower level.

Method
Activity data
The Federal Statistical Office determines the total amounts of soda ash produced in Germany.
Emission factor
Germany uses default emission factors (EMEP/EEA air pollutant emission inventory guidebook - 2009).

pollutant Name of Category EF unit Trend
NH3 soda ash 0.90 kg/t constant
TSP soda ash 0.10 kg/t constant

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2.A.5 - asphalt roofing

Short description
Bitumen is used in production and laying of roof and sealing sheeting. Roof and sealing sheeting is laid by means of both hot and cold processes. The hot process, involving welding of sheeting, produces significant emissions of organic substances. The relevant emissions trends depend primarily on trends in quantities of polymer bitumen sheeting produced. Use of solvent-containing primers is not considered here; it is covered via the solvents model – cf. Chapter solvent-and-other-product-use (NFR sector 3).
Because of importance from other sources as solvents use, NMVOC emissions are considered and taken into account in this part of the emissions inventory.

Method
Activity data
The quantity of roof and sealing sheeting produced (activity rate) has been provided by the Verband der Dachbahnenindustrie, the roof-sheeting manufacturers association (VDD, actual table exchanged with UBA) ever since a relevant cooperation agreement was concluded.
Emission factor
In the process, a distinction is made between emissions from production and emissions from laying of roof and sealing sheeting. The emission factor for production of roof and sealing sheeting was obtained via a calculation in accordance with current technological standards of German manufacturers (VDD, see activitiy data). The emission factor for laying of polymer bitumen sheeting has been taken from an ecological balance sheet (IKP, 1996). The implied emission factor for the source category has been increasing slightly, as a result of the increasing importance of polymer bitumen sheeting.
NMVOC emissions are calculated in keeping with a Tier 1 method, since no pertinent detailed data are available.

pollutant Name of Category EF unit Trend
NMVOC Production of roof and sealing sheeting with bitumen 0.000357955 kg/m2 constant
NMVOC Laying of roof and sealing sheeting with bitumen 0.000027 – 0.000038 kg/m2 rising

Emissions from the use of solvents are reported under NFR 3 (see above), therefore the emission factors used are on a low level.

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2.A.6 - road paving

Short description
Currently, the report tables list produced quantities of mixed asphalt products (from stationary installations only) and NMVOC, NOx and SO2 emissions caused of this. Only emissions from asphalt production are reported. Figures relative to emissions released during laying of asphalt have not been examined.

Method
Activity data
The applicable quantity of mixed asphalt products produced (activity rate) has been taken from communications of the Deutscher Asphaltverband (DAV; German asphalt association).
Emission factor
Emission factors have been determined country-specifically, pursuant to Tier 2. For determination of emission factors for emissions measurements from over 400 asphalt-mixing plants, made during the period 1989 through 2000, were used. The majority of the emissions occur during drying of pertinent mineral substances. Almost all of the NMVOC emissions originate in the organic raw materials used, and they are released primarily in parallel-drum operation, as well as from mixers and loading areas. On average, about 50% of the NOx and SO2 involved come from the mineral substances (proportional process emissions). CO emissions are calculated solely in connection with fuel inputs.

pollutant Name of Category EF unit Trend
NMVOC Production of mixed asphalt 0.030 kg/t constant
NOx Production of mixed asphalt 0.015 kg/t constant
SOx Production of mixed asphalt 0.030 kg/t constant
TSP Production of mixed asphalt 0.006 kg/t constant
PM10 Production of mixed asphalt 0.0057 kg/t constant
PM2.5 Production of mixed asphalt 0.003 kg/t constant

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2.A.7.a - mining activities

There is no estimation and description this time.

2.A.7.b - Construction

For submission 2012 this category was identified as Key Source for PM 10 without outcome for estimation level.

Short description
Results of a research project that had evaluated data of the European model RAINS point out for this category only information on floor area built in country. This information is combined with default emission factors for TSP and PM (Tier 1).

Method
Activity data
The data on floor area built is gotten from national statistics and corrected in 2010 for whole time series. The category clearly includes the construction part of building activities without demolition of buildings.
Emission factor
The emission factors are based on the RAINS values assuming that dwellings make up 65 percent of the total floor area
constructed:
Emission factors used in the RAINS model for construction sector [kg/ m2].

Sector RAINS code PM2.5 PM10 TSP
Construction CONSTRUCT 0.0092 0.0914 0.1828

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2.A.7.c - bulk products

The description is located under other industries.

2.A.7.d - salt production

Short description
Currently, a Tier 1 method is used: information on production of salts are multiplied with emission factors for TSP and PM.

Method
Activity data
The data from national statistics includes production of potash and rock salt. Potash salt is dominating, with updated and for lacks fulfilled statistics the source in the whole is modeled as potash salt only.
Emission factor
The emission factors are based on analogy to bulk product handling by an expert judgements from UBA:

Particle-class EF [kg/t salt]
TSP 0.031
PM 10 0.016
PM 2.5 0.003

Recalculation
Due to efforts to improve the inventory, broad recalculations became necessary with this submission. Both the activity data and the emission factors were evaluated, PM information was added. But the changing is deeply regarding the used data, but also important regarding the emission level.
Now the emissions of TSP are nearly the half of former submissions, but PM is reported first time for a realistic view on the inventory.

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