Forum for ecoinvent Version 3

Here you find all boards with the latest posts of the Forum for ecoinvent v3

Written on 24.07.2017 by luciavalsasina see context

Dear Fei, 

 

DINCH is currently not included in ecoinvent. You might find some of the input chemicals that are necessary to produce DINCH, for example you can find "butadiene" in ecoinvent. Obviously the inputs depend on the production route you choose. 

 

Consult the Activity overview file for the list of all activities and products present in ecoinvent. 

 

ecoinvent version 3.4 will soon be released and will include an update in chemicals. Unfortunately I believe DINCH will nto be part of the update, but keep up to date with ecoinvent news to know more about which chemicals will be part of the new release. 

 

Thank you for the suggestion and we will include this product in the user's wish list. 

 

Best regards,
Lucia Valsasina, Data Analyst, ecoinvent

 

Written on 19.07.2017 by Zhangf see context

Is there data regarding the manufacture of DINCH or other LCI data that an industry body has done, that would allow you to create a dataset for DINCH (Cas number 166412-78-8) 1,2-Cyclohexane dicarboxylic acid diisononyl ester, to ecoinvent v3.2 database?

Thank you,

Fei

Written on 19.07.2017 by david.fitzgerald see context

Dear Cyril,

This is a case where economic allocation is applied (using the prices given in the properties of the products). No correction is made to adjust the exchange amounts so as to respect the mass balances. However, this is something we are working on. Allocation corrections will be included in a future release of the database.Please let us know if you'd like more details concerning how the economic allocation is done.

Best regards,

David FitzGeraldData analyst, ecoinvent

Written on 13.07.2017 by terezalevova see context

This section of the ecoinvent forum serves as a place for discussion among the users of the datasets on production of chemicals created by ecoinvent within the EU Product Environmental Footprint (PEF) pilot phase implementation. Feel free to discuss here any topics related to the data with other users. 

In case you would like to get an immediate response from the ecoinvent team, contact us, please via email (pef@ecoinvent.org). 

Written on 10.07.2017 by guillaume.audard see context

Dear ecoinvent,

I have some questions regarding the following dataset : "import of sulfate pulp, unbleached, from eucalyptus ssp. from sustainable forest management, TH, RER"

The only input in this dataset is "sulfate pulp" from the activity "market for sulfate pulp [GLO]", including all types of sulfate pulp, from eucalyptus or not. The comment for this input states : "Reference product. Wood pulp produced in Thailand (however EU production data) and imported to a large maritime harbour in Europe. The pulp is intended for paper production in Europe."

Could you please explain why "market for sulfate pulp [GLO]" is more relevant here than "sulfate pulp production, from eucalyptus ssp. from sustainable forest management, unbleached [TH]" ?

The field "Activity ends with" also states : "The dataset includes transportation from the pulp mill to the harbour in Thailand by truck and from the harbour in Thailand to European harbour by freight ship."

These transports are clearly not included. Could you please confirm that there is a error or detail the modelling approach for this dataset ?

Written on 04.07.2017 by Florentine Brunner see context

Dear Jurjen,

thank you for your question. Tracing back your line of investigation we can confirm that the value for land transformation in the “onshore well oil/gas” dataset is indeed based on information from a Nigerian company. If you wish to access the respective report, you can find it by logging in EcoQuery, database version 1+2 and navigating to section “[Reports] ”, file “06_IV_Erdoel.pdf” (unfortunately it is only available in German).

We are currently investigating the plausibility of this value to be used in the global dataset and the according corrections, if necessary. We will give details as soon as possible.

 

Best regards,

Florentine Brunner, Data Analyst, ecoinvent

Written on 03.07.2017 by Paul Suski see context

Dear Avraam,

thanks for the fast and informative reply. It's good to see that you're working on an extended documetary. Now I wonder if there are also plans to make this issue more flexible, so that users can choose the allocation method. I'm using OpenLCA 1.5 and there is an option to implement allocation methods for multi-output-processes. As for now these mining processes aren't compiled as multi-output-processes, so this option cannot be used.

Best regards,Paul

Written on 30.06.2017 by luciavalsasina see context

Dear Mehboob, 

 

because of user's interest, we have now included the CAS numbers in the Activity overview for v3.3, which you can download from the documents and files section of the website. In the file you can find the CAS number for both elementary and intermediate exchanges in the respective tabs. ecoinvent version 3.4 will also include an update on chemicals, including CAS numbers, formulas and synonyms. 

 

Best regards, 

Lucia Valsasina, Data Analyst, ecoinvent

Written on 29.06.2017 by Mehboobnawaz see context

Hello, 

I am trying to link the EI3 datasets to their CAS numbers. I am face the same issue as RandyB pointed out. Although, Lucia provided the answer but in "Correspondence Files from ecoinvent 2.2 to 3.0", there are no CAS numbers mentioned for "Intermediate Exchanges". Is there a way to get CAS numbers corresponding to the product datasets?

Mehboob

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Written on 28.06.2017 by Miguel - F.Ast see context

my question is when is appropriate to use RoW datasets. What are they representative of?

 

here ecoinvent partially explains how they are derived. it is quite clear how the production volume of RoW is calculated, but the rest is to me a bit obscure. looking into the barley dataset (referenced in the explaination) I see it has "irrigation" from many regions (BR,CN,US,PH,MY,RoW,CA-QC). I guess these are all the regions that have an irrigation dataset defined but do not have themselves a "barley production" dataset defined. But actually Quebec does have a barley production dataset!

the "geography" comment says: Refers to an average production in the region Saxony-Anhalt (DE). Which I guess is inherited from other dataset and is wrong.

in Representativeness we have the following comment: The amounts of flows are weighted averages over all existing local crop production datasets available for this specific product. The weights are the annual production volumes of the local datasets relative to the sum of all local annual production volumes. The locations of considered datasets in the averaging prodecure for this global dataset are Germany, Spain and France.

Which is even more confusing.

Written on 27.06.2017 by Miguel - F.Ast see context

Hello

I think it is a good idea to classify activities by categories, but when I started trying to use the "classification" field of ecoinvent  I have noticed that it does not have a standard formatting.

The classification field includes the ISIC and "ecospold categories" but only certain processes have a ecospold category, thus it is not terribly useful. Furthermore, the fields do not follow a particular order. Sometimes the isic code goes first, sometimes it goes after the ecospold category. this uncesarely complicates the use of the field in any algorithm. I suggest, that in the next release the field has a proper order, ideally with a consistent categorisation with respect to the ecospold category.  

best,

Miguel F. Astudillo

 

 

Written on 27.06.2017 by emilia.moreno.ruiz see context

Dear Niels,

There is no Swiss market for biogas in ecoinvent v3.3. As we are in constant improvement of our supply chains, we might introduce one for the next versions of the database.

Regards,

Emilia

Written on 26.06.2017 by Rolf.Frischknecht see context

Dear Emilia,

I agree to split the issues and treat data and modelling separately.

Data: While it is true that the incineration of average MSW "produces" aluminium, iron and copper scraps, the incineration of biowaste does not. 1 kg of Carrots supplied by the global market comes with 120 grams of biowaste, which is treated in the RoW and CH markets of biowaste treatment. A share of this treatment is done by incineration, but without "producing" aluminium scrap. Hence, carrots must find other ways to enter the MSW route and thus the aluminium alloy production. One of them might be the route of treatment of biowaste by composting, during which 18.5 mg of MSW is generated per kg of biowaste.

Modelling: the usual way of optimising waste treatment and recycling chains is by direct allocation of the various valuable products of the waste treatment activity (e.g. biowaste incineration: allocation between the three products waste treatment service, electricity and heat; biowaste anaerobic digestion: allocation between the three products waste treatment service, biogas and compost).

In case studies (not in background databases) about the environmentally preferable waste treatment options, one may also apply the basket of benefit or the avoided burden approaches.

I do not yet see the point of allocating a share of vegetables production to aluminium recycling as a means to optimise waste treatment chains (in the global vegetables and fruits (carrots, apples etc.) markets as represented in ecoinvent). And I do not see the message to convey with the fact that aluminium recycling requires efforts and causes emissions in vegetables and fruits production. Should aluminium recyclers plea for organic vegetables production to lower their recycled metals' footprints?

Data in database: Many important recycling activities are present in the ecoinvent data v2 such as metals recycling, anaerobic digestion, electronic waste treatment. Some recycling processes are missing like plastics recycling. Processes using secondary fuels such as clinker (cement) production and processes where energy is recovered such as waste incineration rpocesses are present too. Hence, many of these activity datasets are present, some links to and from them are (intentionally) not.

Best regards, Rolf