Hello all,

I was wondering, is anyone of you familiar to ADM1 (anaerobic digestion model no1)? Am trying to model AD at 15oC or less but the results are not similar to what I have from lab so i was wondering if there is anyone keen on that to discuss of some changes that might needed.

Any kind of help is much appreciated!

Thanks in advance

Evangelos

Hello Bendel Boy,

Thank you for your response. What I haven't understood yet are the presence of the txt file where the 34 parameters are set (substrate characteristics, degraders, flow and temp) and the M-file with the 42 parameters (similar to the txt file+some more) and approx. 100 parameters (such as Y, k, T.base, T.op,.f, c etc). What I did so far is used the 42 & 100 the way it is and I changed the parameters from the txt file according to my data. The model seems to work but am not sure if the results are representative. When you say that I must change the coeff., you mean the values for Y, K etc or what I ve done so far (the numbers of the degraders and the temp at the txt file)? I have the values for the coefficients at low temperatures because am running pilot scale reactors at those temperatures, the problem is that am not sure about what to change at the model.

Thank you again for your time

I look forward to your response,

Evangelos

Thank you for the response and the pdfs. I think I got it now, the reports look really interesting and the examples will definately help! thanks for the support I hope I will have my results soon and I believe I won't have to bomb the forum with new messages.

Kind regards

Evangelos

If you have only the M files then you may be missing the support DLLs - or they may be what you turned into MEX files. Most people start by contacting Ulf Jeppsen at Lund University to get the current distribution of his ADM1 files.

If you need support after this I will do what I can to help; but my experience is based on having his distribution, rather than typing in MATLAB files from the printed reports.

The Transformer object is new to me! Do you have any details?

Hi,
just starting my thesis on modeling of anaerobic digestion. I am thinking of using ADM1 model but I cant find any .m files or txt files you mention here. Also,
http://www.enzyme.chem.msu.ru/ekbio/article/ADM1-WST.pdf
currently is not accessible  
Could you point me to the right direction.
Also, hope to collaborate with someone on this subject

Thanks,
Just sended request to Ulf Jeppson.
Perhaps I could get get the article through a library request if I knew the Title or/and Authors
I've start reading reports (LTH-IEA-7224,LTH-IEA-7225)
which are very detailed and need to be fully understand.
By the way my professor suggested to use AquaSim (which I've downloaded) but it seems to me challenging to understand.

You can get the technical ADM1 report at

http://www.iwapublishing.com/template.cfm?name=isbn1900222787, or through any good bookseller by giving them the details from the IWA. It is not cheap for a slender publication, but that seems to be the way academic publishing has gone.

I develop STOAT, which is free to download - but does not yet have ADM1 in the public version. Still under development - as in, in the internal version of STOAT, but still undergoing testing as part of the other developments that we are making.

GPS-X/WEST would be fine. I don't know what the academic price is; both are quite expensive commercially. I think that you would find GPS-X easier to use, but there is not much between them.

Ulf's distribution includes all the source code. It would be easy to convert to stand-alone C code, or to modify to Fortran. But this route requires adding in your own integration module.

The Matlab/Simulink appraoch with Ulf's code has been found easy enough to use by people who had no prior knowledge of Matlab - they learnt just enough to run the model & get the results that they want.

There would definitely be an interest in an ADM1 with a non-Simulink GUI.

When STOAT 5 finally gets released I will post here, if allowed; but the timescale will not be of use to you.

Hello Everybody, i am doing my thesis on anaerobic treatment from cow´s manure, and i am also interested to use the ADM1 to compare it with my lab results. I got a short idea of ADM1 definition, so i want to ask if somebody can provide me the ADM1 book? Thanks.

Thanks for your answer. I will follow your suggestions.

input_ADMtest.mat is the binary version of input_ADMtest.txt. The .mat file (usually) takes up less space and is quicker for Matlab to read; it also holds the information about the variable (input) which is absent from the text file - you would need to read in the text file and asign it to a variable.

With me input_ADMtest holds just one variable, input.

adm1init_ADMtest contains variious parameter defualts, while input_ADMtest contains only default values for the influent.

However, I don't find S_su defined twice - maybe we have different files from Ulf, as mine were provided around 2006?

Your missing 34th variable in input_ADMtest.mat is time.

And that explains your question! S_Su is not defined twice; it is defined as a time series. What you thought of as the value 0 for S_su is the value at time zero; what you thought was the value 10,000 is the value at 10,000 (I think days, not hours).

The default value S_su of 0.012 is the initial value within the digester.

The values in the MAT file are the values in the feed entering the digester.