Reviews of the book Biogas - practical manual

crude vegetable oil, diester, bio-ethanol or other biofuels, or fuel of vegetable origin ...
Christophe
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Re: book review Biogas - practical manual




by Christophe » 09/03/16, 21:29

chatelot16 wrote:I just received this book: there is nothing precise enough to allow a realization ... so do not rely on this book to practice ... it's just a nice enough book for to discover the subject ... it is absolutely necessary to seek information more precise elsewhere, otherwise failure assured


Funny because the opinion on amazon says the opposite:

No blabbering, no fuss, the author put his hands in the m____ before explaining how a homemade biogas plant can be built. Based on a long study that has taken him to many countries where biogas is used by many families, then on the realization of his own self-construction unit, its improvement and exploitation, the book traces all this fabulous experience. Prefaced by Bernard LAGRANGE precursor and author of two cult books on biogas, Jean Philippe VALLA at the head in the stars and the feet on the ground: it makes us dream of a durable, ecological and respectful solution.


I believe more in your impartiality chatelot than that of this comment ...

Does the book simply mention the 10 to 20kg ratio of material to make the 1 L equivalent of fuel? Because that's where you have to start ...
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Re: book review Biogas - practical manual




by Christophe » 09/03/16, 21:42

mandrieu wrote:Are you talking about the compression aspect or the whole?
For my part, it was a long time since I was looking for specific information and I never found a book, even in English, which explains all that. Especially purification, and yet I have long sought!


Uh how many did you buy really because there are some one ...

Anaerobic digestion - 7 april 2011
by René Moletta (Author)

Publisher: Tec & Doc Lavoisier; Edition: 2nd edition (April 7, 2011)
French language
ISBN-10: 2743012714
ISBN-13: 978-2743012717


Anaerobic digestion - 3 april 2015
by René Moletta (Author), Collectif (Author)

Thanks to its success, witness of the evolution of knowledge as technologies, the anaerobic digestion is today the subject of a third edition. The contributions of thirty internationally recognized specialists, researchers and professionals provide a comprehensive overview of the fundamental aspects necessary for the knowledge of the anaerobic digestion process and its exploitation. This book is divided into five parts: • Presentation of the microbiology and implementation of the process • Legislative aspects: regulation and safety • Methanization technologies applied to effluents and technologies applied to waste (urban or agricultural) • Modes of application biogas recovery • Economic aspects.While France is progressing in terms of waste treatment and green energy production, potential players in the sector, in particular engineering and design agencies, need to deepen their knowledge of the environment. biogas process and the technologies that can be used to exploit it. The authors of this book have set themselves the goal of helping them. For this, they have chosen to devote a large space to the process engineering and to multiply the concrete examples of French, European or more distant implementations. The anaerobic digestion also constitutes a unique sum of information in French language for the students specializing in the fields of environment, renewable energies, sustainable development or procs engineering

Hardcover: 513 pages
Publisher: Tec & Doc Lavoisier; Edition: 3nd edition (April 3, 2015)
French language
ISBN-10: 2743019913
ISBN-13: 978-2743019914


The latter is sold 145 € for 513 pages! So we can still expect many technical details ...

For my part I have this one:

Biométhane by Bernard Lagrande
- Principles, techniques and use ... 1979 edition all the same EDISUD editions
245 pages


It is very complete practical level, I could scan you some extracts on request ...
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Re: book review Biogas - practical manual




by chatelot16 » 09/03/16, 23:33

the purification of this gas is important ... counting on the pure water to absorb the CO2 seems to me an error because the diference of solubility in water of CO2 and methane is not huge

this book completely forgets the purification of the H2S before compressing ... danger of corrosion of steel tanks ... I have not found any precise in every corner of the net on this problem of purification: it is in the old book on lighting gas, city gas by distillation of coal that I find the most useful information: mixture of lime: sawdust lime and iron to absorb the corrosive impurity of the gas before sending it into the pipes of the time, or compress it into the bottle of a vehicle

I also find insufficiency on the absorbances of the essential water to be able to compress without risk of corrosion ... there is a page on the absorbions or one does not understand the difference between chemical absorption by calcium chloride and physical absorption by silica gel ... without sufficient precision we learn nothing

for a good energy efficiency chemical absorption of water seems too expensive: a solution is the dehumidification refrigeration, which works economically for compressed air

this book is an introduction before going further, but not a practical manual to move to the realization!
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Re: book review Biogas - practical manual




by renaud67 » 10/03/16, 10:53

Hello,
someone would he porucré e book the Jean Pain method, whether its content would achieve an installation?
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Re: book review Biogas - practical manual




by mandrieu » 10/03/16, 21:12

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.
good night.

Phew!
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Re: book review Biogas - practical manual




by Macro » 11/03/16, 11:11

Personal with a ton of fat ... I make the energy equivalent of a ton of oil ... Without methanize ...
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Re: book review Biogas - practical manual




by chatelot16 » 11/03/16, 12:00

methanisation is really not the easiest way to make fuel for a vehicle: you have to build everything yourself from A to Z, and do something impossible to make profitable by selling it in several copies, given the expensive standards on compressed gases blocking the market

use cooking oil or vegetable oil without inventing anything

my first motivation to me to the methanisation was the valorization of the green waste that all the world transports to the trash ... I quickly realized that the recovery of these waste is too random: it is necessary to regularize by installing the methanizer at a farmer who has manure

later I realized that the green waste was usable by simple combustion! at the beginning I thought that it was impossible to store for heating in winters: that could sooner than it dry: solution mix the wet waste with crushed wood already dry: the dry absorbs water and lowers moisture a rate that no longer makes it possible to rot, and the finished mixture of drying alone ... the methanisation becomes unnecessary for green waste

I continue to focus on methanization but on a larger scale for the farmer

I use wood and other waste in a special gasifier that separates wood pyrolysis products: it makes a little liquid fuel methanol and acetone can be mixed with gasoline

this kind of gazogene can also be used as a lime kiln ... and produce quicklime for the purification of methane

finally quicklime is a good way to purify the methane: completely passive without energy consumption at the methanizer, and consomation of thermal energy in the lime kiln, so direct use of wood and other combustible waste

Quicklime is better than absorbing CO2, it absorbs moisture very effectively, and once it is extinguished by water, it absorbs 100% CO2 without any loss of methane ... we can push the reduction of the loss of methane until vacuum, the used lime to return methanizer the little methane it contains dissolved before rejecting ... but it is not sure that it is useful given the huge relationship between quantity of CO2 retained by lime and dissolution of methane
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Re: book review Biogas - practical manual




by Macro » 11/03/16, 13:35

In an industrial process we use activated carbons to fix the hydrocarbon vapors (methane is one of them) these activated carbons are then "desorbed" by a vacuum at the discharge of the vacuum pump the vapors are "sprayed" under liquid hydrocarbons which has the effect of fixing them ... And they start again in the cycle ... The energy consumption is important but the vapors are no longer put into the atmosphere .... troubling fact ... I have owned a golf 1 GTI convertible which came back from california and had been brought up to the depollution standards of the bottom in 1991 .... And it had on the venting of the tank exactly the same process ... During the parking the gases resulting from the expansion of the fuel from the tank were filtered by the activated carbon filters placed in the rear wing. When we put the car in motion a set of solenoid valves engaged on the engine vacuum put these carbon filters under vacuum to clean them and reinject them into the engine ... the system (a real gas plant that I had fired at the time) was really similar ...
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Re: book review Biogas - practical manual




by chatelot16 » 11/03/16, 14:33

this activated carbon filter exists on the current gasoline car ... it absorbs the steam from the tank when it is stopped, and it is rinsed by the air sucked by the engine when we roll

I did not think about activated carbon, but if it absorbs methane and not CO2 it would be a way to supplement a CO2 absorption with water: to pass the CO2 containing a little methane coming out of the water in coal

but all these compression and evacuation consume a significant energy, a noble mechanical energy ... the quicklime solution consumes no energy at the moment it is used, it has consumed a thermal energy in a separate operation ... another way to add value to fuelwood

making lime is easier than you think: lime should be cheaper than cement, but as it is an "ecological" product it sells ridiculously too expensive

a small oven has a lower thermal efficiency than a large one, but if it is used as a boiler in winters when there is a need for heating, there is no more heat lost

and in my case the lime kiln will not be a special construction but a trick sometimes serving as a gasifier for lime kiln
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Re: book review Biogas - practical manual




by mandrieu » 11/03/16, 21:50

What good ideas!
Do you have a fairly precise description of the lime or activated carbon treatment?
the author says that washing with water is the simplest but it will interest me to see how to implement these 2 other processes.
I know that a long time ago, the lime treatment was used and then abandoned. Nowadays, it seems that we do not use it anymore, why?
Currently we use;
- washing with water (as in the book)
- chemical washing
- the pressure swing adsorption
- cryogenics
- membrane separation
comparison of different methods that comes from an Indian public research organization, but it's in English:
http://www.hindawi.com/journals/isrn/2012/904167/tab1/
Basically, washing with water is the simplest and cheapest but we lose a little methane
the chemical absorption you are talking about makes it possible to work at lower pressures, but the regeneration of products requires a lot of energy.
So there is lime, but how ???
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