Data Issues
- The activity "treatment of wastewater from grass refinery, capacity 5E9l/year, RoW" is not available in the APOS system model. This does not have any impact on the scores, as the activity and the respective reference product are not used within the database.
- The dataset “glucose production, RER” has been erroneously excluded from this release. We recommend users to use the dataset “glucose production, GLO” and to adjust the supply chain to refer to RER activities. We will re-introduce it for version 3.8.
- The dataset “glued laminated timber production, average glue mix, CA-QC” has a wrong reference product, namely “glued laminated timber, for indoor use”. This reference product was renamed in version 3.7 to “glued laminated timber, average glue mix”. In version 3.7, no market for glued “laminated timber, for indoor use” exists.
- The transport distances in the market for sawnwood, board, softwood, dried (u=10%), planed, CH are incorrect. The exchange transport, freight, light commercial vehicle has to be deleted from the dataset. The exchange “transport, freight, lorry, unspecified” with an amount of 86.7105 metric ton*km has to be added to the dataset.
- The amount of the reference product “spent sawing slurry from Si-wafer cutting” in the activities “treatment of spent sawing slurry from Si-wafer cutting, RER and GLO” is incorrect. The original single output unit processes can be found at the v2 report (Jungbluth, N., Stucki, M., Frischknecht, R. (2009). Photovoltaics. In Dones, R. (Ed.) et al., Sachbilanzen von Energiesystemen: Grundlagen für den ökologischen Vergleich von Energiesystemen und den Einbezug von Energiesystemen in Ökobilanzen für die Schweiz. Ecoinvent report No. 6-XII).
- The value of the exchange “water” to environment is incorrect in the activities “coating service, melamine impregnated paper, double-sided”, RER and GLO. The value should be 0.000154 m3 instead of 0.154 m3.
- The amount of the exchange “wafer, fabricated, for integrated circuit” in the activity “integrated circuit production, memory type” is incorrect. The correct value is 0.019056m2 instead of 4.44E-05m2.
-
The amount of the exchange “Occupation, urban, green area” in the activity “treatment of garden biowaste, home composting in heaps”, in both FR and GLO is incorrect. The correct value for “Occupation, urban, green area” is 5.97E-03 m2*year.
-
The datasets “iron sinter production, RER” and “iron sinter production, GLO” have been identified to contain three inconsistently calculated elementary exchanges (emissions) for:
- “Particulates, > 10 um”,
- “Particulates, > 2.5 um, and < 10um” and
- “Dioxins, measured as 2,3,7,8-tetrachlorodibenzo-p-dioxin”
In addition, the datasets lack of emissions for “Particulates, < 2.5 um”.
The added and corrected elementary exchange/s and their respective amounts are presented in the table below.
Elementary exchange
Amount
Unit
Particulates, > 10 um
9.38E-05
kg
Particulates, > 2.5 um, and < 10um
1.96E-05
kg
Particulates, < 2.5 um
1.20E-04
kg
Dioxins, measured as 2,3,7,8-tetrachlorodibenzo-p-dioxin
1.55E-12
kg
-
In November 2020, we received an update from the International Zinc Association regarding the modelling of the zinc mining dataset:
The exchange amount of the input from the environment "Gold, in ground" (compartment: "natural resource"; subcompartment: "in ground") was found to be wrong in the activity "zinc mine operation, GLO". As this is a multi-output activity, several datasets are affected by this error in the attributional system models. The new amounts in each system model, based on corrected data supplied by the data provider, are listed in the table below. These amounts correspond to those published in version 3.7.1 of the ecoinvent database.
System model
Reference product
Corrected exchange amount of "Gold, in ground" (kg)
Undefined
zinc concentrate
0.00000104
Allocation, APOS
bulk lead-zinc concentrate
6.86335E-07
Allocation, APOS
copper concentrate, sulfide ore
1.58859E-06
Allocation, APOS
gold, unrefined
0.040384363
Allocation, APOS
iron scrap, unsorted
2.80535E-07
Allocation, APOS
lead concentrate
7.10915E-07
Allocation, APOS
lime
2.21215E-07
Allocation, APOS
quicklime, milled, loose
1.45586E-07
Allocation, APOS
sand
7.56292E-09
Allocation, APOS
zinc concentrate
7.18478E-07
Allocation, cut-off
bulk lead-zinc concentrate
6.88443E-07
Allocation, cut-off
copper concentrate, sulfide ore
1.59347E-06
Allocation, cut-off
gold, unrefined
0.040508371
Allocation, cut-off
lead concentrate
7.13098E-07
Allocation, cut-off
lime
2.21895E-07
Allocation, cut-off
quicklime, milled, loose
1.46033E-07
Allocation, cut-off
sand
7.58615E-09
Allocation, cut-off
zinc concentrate
7.20684E-07
Consequential
zinc concentrate
0.00000104
Consequential system model issues
- Three elementary exchanges are found in the compartment "social". These exchanges can be ignored, both at the unit process and the inventory level, as ecoinvent does not yet account for social impacts.
For questions please contact support@ecoinvent.org