I have the book of Jean Pain, awesome but chatelot would surely cry reading it in the complete lack of precision. If the precision is counted in number of page then the book of Jean PAin is worth nothing. For my part, I have this book for quite some time, it is interesting in the sense that it gives ideas on many things but does not really go into the details.
Moletta's reverse may be complete with regard to anaerobic digestion but having flown over, I challenge anyone to embark on a methanization project with this book. It is aimed at real professionals in the sector who are interested in big projects. I do not think it describes the purification side for the purpose of biogas fuel.
Biomethane 1 and 2 by Bernard Lagrange are 2 great books, very complete, the 2 flight is very interesting, the 1 was rather an inventory of metha 30 years ago. It is besides this Bernard Lagrange who makes the preface of the book Manuel Pratique de Valla.
Valla's book also talks about “Biogas production” by Uwe GÖRISCH and Markus HELM, which I haven't read.
Chatelot, you have not read the manual at all since there is a chapter on the purification of the H2S, the author proposes a filter made of rusty steel shavings + chips of wood that fixes the sulfur. We find this same system here: http://www.connellygpm.com/ironsponge.html
For the absorption of water, the book talks about several techniques (I did not see where you read this story of calcium chloride yet I read it 2 times ...). Economic question, he also talks about condense water in a long pipe placed cool. He uses silica gel, no need for electricity.
Christophe, the author does not talk about 10 to 20kg gives 1l fuel like that. He explains that it depends on the type of material. We can see on a graph that pig slurry produces little compared to fat for example very large producer. He then says that 1m3 of biogas produces 1l of oil and for example 1 ton of fat produces 500m3 of biogas and thus 500l of oil but 1 ton of pig manure produces 20m3 of biogas so 20l of oil! Very different, so we go from 2kg of fat to 50kg of porcine slurry to produce the same m3 of biogas.
I really find this book well done and I encourage chatelot to read it completely, it is full of details on the constructive aspects. It is true that there is only one page on the purification of the H2S but it is there and is sufficient to understand the principle and to implement it.
This book is really for self-builders, like me, who want to build the complete system. I had already found a lot of information on the net on the construction of methanizers but here there is everything and especially the purification of co2! nothing on the internet that allows to build.