ecoinvent Forum Archive

Hi all,

I'm trying to find - for example for bleaching and dyeing of cotton - the impact for just this one process, in the categories (among others):

- Global Warming Potential (GWP 100a)- Global Warming Potential (GWP 20a)- Energy demand: Renewable energy resources, biomass- Renewable energy resources, geothermal, converted- Renewable energy resources, solar, converted- Non-renewable energy resources, fossil- Non-renewable energy resources, nuclear- etc. These are all categories found in the LCIA-dataset of bleaching and dyeing, which shows the impact from cradle, thus including all upstream activities. However, I only want to know the impact of the bleaching and dying itself. Can anyone help me and tell me how to do this?

Thank you soooo much in advance!

Nina

Dear Nina, 

Finding the direct impact of a dataset depends on how you are using the ecoinvent database.

If you are using ecoinvent through a software, I would recommed you to refer to their support.

If you are accessing the ecoinvent database through ecoQuery (ecoinvent online) there is no straight forward way to do so. You would need to search for the unit process that interests you, extract the direct emissions and then apply the characterisation factors for the methods you are interested in. Information on ecoinvent implementation of LCIA methods is available in ecoQeury, in the file section -> supporting documentation -> file "ecoinvent 3.x_LCIA_implementation". 

For the specific dataset "bleaching and dyeing, yarn" if you look at the unit process, the only direct emission is water to air. Please check the boundary of the unit process to make sure that this is what you are interested in. For example if you are also interested in the emissions from wastewater, you would need to refer to the relevant dataset "direct disposal of wastewater from textile production" (modelled as a by-product of the bleaching and dyieng). 

Best regards, 

Lucia Valsasina, Junior Project Manager, ecoinvent Association

Dear Lucia,

Thank you for your quick response, this really helps! 

I was accessing the database through ecoQuery. Is there any software you would recommend to me to solve my problem? 

Thanks again! 

Dear Nina, 

You can find the list of our resellers here.

If you have further questions on what is the best way to solve your problem, you can also write us directly at support@ecoinvent.org.

Best regards,

Lucia Valsasina, Junior Project Manager, ecoinvent Association