Does anyone know the g_COD/g_grape,marc ratio of grape marc?

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Mark van Loosdrecht

You should measure it, but as first guess 1.4 gCOD/gVSS can be used

Anacleto Rizzo

Dear Mark, thank you for the answer.

I also found a literature data from "[Fabbri et al. 2015] Micro-scale energy valorization of grape marcs in winery production plants" which measuread an average value of 18,15 g_COD/l. Maybe this paper could be of your interest.

Anacleto

Gunda Mohanakrishna

Dear Anacleto,

several factors such as moisture, TS, VS etc., influence the COD of any material. Even in Fabbri et al;, 2015 also, they find different values for different sources with wide range in COD values. So I suggest you to perform the COD analysis by your own so there will not be any error when you are evaluating your future experiments.