Case Study: PET Water Bottles LCA Using Ecoinvent 3.1

[@ofentsemoseki3591]

hi. thanks for the video. i think it would have been helpful having videos explaining everything about OpenLCA (results interpretation etc. Even today us beginners we still find it difficult to understand the software beyond this video.

[@GangiGangan]

With different electricity mixes in different countries, the environmental effect of the electric power usage could be interesting even in the comparative study, I would assume. But the main purpose of this video is teaching openLCA - and it is very helpful for learning. Thank You! Would love to see more Tutorials

[@piotrb.6943]

Hi! thanks for this very helpful video! Are you planning to prepare the part 2? BG!

[@Empea4all]

Thank you! Two questions, if I may: (1) the "create system process" connected only to system datasets, correct? And this was because this is the only type of dataset in the database you used? I ask because the "connect to system processes if possible" option in my database with both unit and system processes links by default to unit processes. (2) When you chose the "tap water" dataset @12:10, there were many options with exactly the same name. These refer to different tap water production technologies, but it seems that this information is not available. Had you wanted to chose a specific technology (rather than just the first on the list) how would you have identified the correct flow?

[@georgeparku7623]

Hi there, Starting from 5:47, you mentioned the the two different modelling options. I am more interested in the breaking down the production chain into different processes and connecting them with one another. Can you please advise where I can find a video detailing this? I look foward to your response. Thank you

[@Nomaj1507]

Ah same, I want it too

[@lauramisani8127]

Did they eventually answer you?

[@georgeparku7623]

@@lauramisani8127 lol. Not at all

[@albertorosasaguilar]

I am here to note that she never uploaded those other videos where she makes the chained process... Missing it lots... Thank you for the guidance nonetheless.

[@openLCA]

Thank you for your kind message. This video is quite old now, since then openLCA, ecoinvent and the workflow has evolved quite a bit. We have a more updated study that you could take a look to: kzbin.info/www/bejne/nJLOqp6oftOpi8U

[@md.tasbirulislam3856]

@@openLCA The video that you have mentioned is not an exercise like you did it over here. In that referred videos things got complex quickly. Many instances, i think, the video is not suitable for the beginners compared to the way that you have done it over here. I also think that there should be some dedicated videos from OpenLCA around End-of-life scenarios (i.e., waste management ) as Ecoinvent included many of the waste processing data in their latest database. Also it is required as circular economy and waste management has become a critical aspects around the world. I did not find any dedicated waste management modeling using OpenLCA anywhere on KZbin. Furthermore, None of the questions on ask.openLCA have ever been answered completely. I would highly recommend that you create a tutorial session on complete Waste LCA. Your kind cooperation is highly appreciated. Thank you for your support and cooperation.

[@kmsubbu]

For USDA database, I created a PROCESSTRY1 with some inputs and outputs. Then I created a PRODUCTSYSTEM1 for this process. The model graph does not show any links (arrows) as shown at 14:22. I see only one box with the word PROCESSTRY1. What would be the reason? Thanks.

[@openLCA]

+Subbu Kumarappan The USDA database connects to the ecoinvent v2.2 database, so you would need that database too for the background data. If you already have it, have you checked "Add connected processes" when creating the product system? Otherwise you could try the ELCD database for a more comprehensive start with openLCA!

[@moralesfabricio]

I really appreciate your video. It saved me! Thanks a LOT!

[@benliu3169]

Hi, many thanks for your detailed presentation! But shouldn't the electricity consumption be considered? For example, the process from HDPE granulate to HDPE lid may consume electricity. Looking forward to your kind clarification

[@anasjaradat1903]

I appreciate your efforts, but I was unable to find the second part of the video. Do you know where I can find it?

[@openLCA]

Thank you for your comment. The second part of the video wasn't uploaded. We recommend you look at this more recent tutorial for openlca and the ecoinvent database: kzbin.info/www/bejne/nJLOqp6oftOpi8U

[@Mustafacan-]

hi hello there we thank you about your explaning this project i have i quastion in case one i can not find the granulate pet at database could you help me about this thank you again

[@brbin2]

Could you please do the video where you show the results and interpretation? I'm doing my master thesis using this software so it would be really helpfull.

[@openLCA]

Dear +brbin2. Thanks for your interest, but unfortunately we will not produce more videos.

[@nelsonlourenco2779]

Hello. I'm working also with this software but I'm facing some problems during modeling. My calculation during the creation of the product systems are not correct. Do you think we can comunicate and maybe you can help me?

[@openLCA]

Dear Nelson, you can contact us at gd[at]greendelta.com if you have issues using openLCA. Best regards

[@nelsonlourenco2779]

Thanks.

[@ofentsemoseki3591]

@brbin2 did you manage with your thesis? i have a similar situation too

[@anasjaradat1903]

Could you please tell me how I can identify the specific flow's name?

[@reginamambeli2128]

I redid the example, and the graph model was exactly like the example, but when I calculate the impacts, they all result in zero. What could be going wrong? I am thankful.

[@cpahim]

Is there a part II already?

[@RinkiLodhi-xp1dn]

where did you get the Impact assesment into databas? please reply asap.

[@Indieluska]

Hi there, I was following the tutorial step by step, apart from the parameter step when I just added the real numbers into inputs. But then in the end I do not see my inputs in the model graph, when I created a product system only the outputs (water bottle). I tried different settings options when creating the product system, such as "provider linking" or "preferred process type" but nothing helped. Do you have an idea where the problem might be? Thanks in advance. Lucia

[@adhisadhisty479]

Hi! Can you guide me to use this software for my thesis, about proses for drinking water

[@anasjaradat1903]

Have you used OpenLCA software in your research? If so, how did you learn it?

[@onnchuen3283]

Hi, i dont know why, i did exactly the same but in the end my results and yours vary so much.

[@openLCA]

Hi onn chiu chuen, using the same database and software version, you should be able to reproduce the same results as in this video. From experience, it is rather "small" mistakes (commas, units, conversions, etc) that lead to different results...

[@PijarReligia]

Hi, thank you for the video. I am trying to follow exactly as you explained. What database are you using here? Is it free or need to be purchased?

[@luckywilf]

The example given is based on the ELCD database 3.2 which is available free of charge on the Nexus web repository. To quantify the environmental impacts of the system modelled, the Impact assessment methods must be imported in openLCA. The LCIA methods openLCA LCIA methods v2.0.4 are available on the nexus as well

[@luckywilf]

I tried reproducing it, doesn't work out quiet well... You wont get the same Input Info...

[@mab3079]

I did this type of analysis, but when it comes to changing the number of bottles when I changed them to 1000, still the results were same? it should be different for a different number of bottles, right?

[@openLCA]

Indeed, as you change the number of bottles the analysis should be different. We suggest to always save and refresh after applying any changes. The 1000 bottles should be specified at a product system level, before calculation.

[@sk-cd3up]

Where is the "paper" that is mentioned in the video? The link to the "case study" above is expired.. Can you update the link? I want to see the document.

[@openLCA]

Thank you for spotting that and letting us know, we have updated the links now. Also with an updated version from 2020!

[@anasjaradat1903]

When you select "polyethylene terephthalate, granulate, bottle grade-RER", how could we know it represents Europe or other?

[@openLCA]

usually you have to get familiar with the database and datasets inside. You can find descriptions of a specific dataset at the "general information" tab in a process.

[@anasjaradat1903]

@@openLCA thank you

[@philkeh]

Hi, good Video but where do I find part II?

[@openLCA]

Peter Pan Happy that you liked this video. Unfortunately we haven´t produced part II yet and we won´t do that very soon. For more information about results and interpretation see the openLCA user manual: www.openlca.org/documents/14826/72693a49-939f-4693-ac74-fa021a8aa7e7Modeling the supply chain by splitting up the product into different processes is done the same way as in this video. Just that you create different processes that you then combine to a product system.

[@Ultimatebeatdastreet]

Where can I get the same database? - 3_1-alloc.. Thanks

[@openLCA]

Dear Soro, you can find all databases available for openLCA (e.g. ecoinvent v3.1, but also the newer versions v3.2 and v3.3..) on the Nexus website: nexus.openlca.org/database/ecoinvent

[@Ultimatebeatdastreet]

Thank you

[@louvre266]

Hi, thank you very much for this information, how can I create my own line of providers from scratch? Thanks

[@openLCA]

Hi, thank you for watching. To create your own providers you create a new process by going to navigation panel, right click, create new. You will have to then fill out the information as well as inputs and outputs of your process.

[@Anuradha-ov2mr]

Could you please give an update about 3.8 version of eco invent data base.?

[@openLCA]

There is a document explaining the updates of 3.8 and its implementation for openLCA. You can find a summary and the link to this document in our blog post: www.openlca.org/ecoinvent3-8/. Generally speaking you can find updates of this type of content in our blog www.openlca.org/blog/. Thank you.

[@Anuradha-ov2mr]

@@openLCA Thank you.

[@pedrodavidpuente]

WPP is wrong since it is only 4 grams but she defined it as 40 g.

[@hajardeqqaq8717]

hello, in my study I want to calculate the impact of transportation for one KM to use it later in my mathematical model how can I do that? should I only creat a flow for transport and a process where the input is only the transportation mode? thank you

[@openLCA]

+Hajar deqqaq If you are using e.g. the free ELCD database you could simply calculate the impacts for one of the (system) transportation processes. You would, however, need to specify the funcional unit in t*km (as the emissions depend also on the transported weight).

[@hajardeqqaq8717]

+openLCA hello and thank you for your reply I'm using Ecoinvent database 3.1 allocation default and I modeled the tranportation in a process where the amount is the max playload for a truck then I created a product sytem and then I used ReciPe midpoint to assess the impact my question is if i use a normalzation set could I sum the midpoint indicators to get one score instead of using the endpoint ones?

[@taysirshaqalaih641]

Where I can find second part

[@mudiladhanunjayarao8332]

Where is part 2?

[@openLCA]

This database is quite old now, since then openLCA, ecoinvent and the workflow has evolved quite a bit. We have a more updated study that you could take a look to: kzbin.info/www/bejne/nJLOqp6oftOpi8U

[@mustafaali6949]

Shouldn't the weight (1 Kg) of a filled water bottle be equal to the sum of the weights of all inputs (1+0.06+0.04+0.001) Kg?

[@openLCA]

student china Please consider the different units of the inputs in the production process - they are not all "kg", but also transportation (kg*km) is an input to the process. Or am I getting you wrong?

[@mustafaali6949]

I meant that 1 Kg output should be equal to 1Kg input unless there is some waste. Isn't transportation a different category altogether? I'm a beginner so maybe I'm missing something here.

[@openLCA]

student china The mass balance has to be correct, you are right. The sum of all inputs that you mentioned is 1.065 kg which is also just the weight of the filled bottle (see Minute 12:44). The reference flow was 1 initially which stands for one bottle (unit) but not 1kg, if this is what confused you.Hope this helps.

[@mustafaali6949]

openLCA Thanks for the clarification

[@mustafaali6949]

openLCA It would be great if you could kindly suggest how to link different processes. I'm trying to model waste disposal scenarios and I don't really know how to connect different nodes(for instance ash treatment after incineration). Similarly it would be great if you could suggest how to model all the processes in one project rather than using different projects for each process (e.g. landfill vs incineration)

[@mohammadabdulshakir9188]

hi why there is no video on part 2

[@babychicken2149]

RIP next video

[@MilagrosAlvarez]

Part II, please

[@dzeivid4413]

Very helpful

[@rahebhafezzadeh8033]

I didn't like the way of explaining ... not useful for a beginner

[@openLCA]

Sorry to hear that! We will publish a set of new tutorials dedicated for beginners this evening at 8 pm. Stay tuned, they will definitely help you to understand more ;)

[@rahebhafezzadeh8033]

@@openLCA I hope so

[@benyaminsengat129]

yo thumbs up man

[@Uknowwhoiam69]

Hello, is there a part 2 for this video?

[@openLCA]

Happy that you liked this video. Unfortunately we haven´t produced part II yet and we won´t do that very soon. For more information about results and interpretation see the openLCA user manual or the openLCA bottle tutorial www.openlca.org/wp-content/uploads/2020/06/GreenDelta-Bottle-Tutorial_1.10_june2020.pdf