Question

which are the gases form in biogas plant​

Answer 1

here is the answer

• Batch type: the digester is filled at once, the feedstock digests and subsequently the whole system is emptied

• Continuously expanding type: firstly, the digester is filled up to 1/3, then it is continuously filled until it is full and finally the digester is emptied

• Continuously flow type: the digester is initially filled completely, then the feedstock is continuously added and digested material is continuously removed

• Pug flow type: the feedstock is added regularly at one end and overflows the other end

• Contact type: this is a continuous type, but a support medium is provided for the bacteria

Biogas - The Characteristics

The product of digestion is Biogas, a combination of methane and carbon dioxide, typically in the ratio of 6:4 (55-80 % methane). In addition, there are small quantities of hydrogen sulfide and other trace gases.

Typical composition of biogas

Methane 50-80 %

Carbon dioxide 25-50 %

Nitrogen 0-10 %

Hydrogen 0-1 %

Hydrogen sulphide 0-3 %

Oxygen 0-2 %

Biogas - The Use

Biogas containing methane is a valuable product of anaerobic digestion which can be utilised in the production of renewable energy. Biogas can be used for generating electricity and heat. It can also be burned directly for cooking, heating, lighting and process heat. Furthermore, even pilot fuel cells installations are operated with by biogas.

In addition, biogas can be cleaned and upgraded to natural gas quality. The final product is biomethane, which has methane content between 95 and 100%. This biomethane is suitable for all natural gas applications: for instance, it can be fed into the natural gas grid or used for transport in vehicles.

Answer 2

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$\sf{\underline{What\:is\:a\:Biogas\:Plant\:?}}$


A biogas plant consists of a biogas $\bold{digester.}$

It a place where $\bold{organic\:waste}$ like dead plant and animal material consisting of animal dung and kitchen waste decomposes and emits $\bold{biogas.}$


$\bold{Now,}$

$\sf{\underline{Coming\:to\:the\:question.}}$


$\sf{\underline{The\:gases\:formed\:in\:biogas\:plant:}}$

=> Methane $(CH_{4})$

=> Carbon dioxide $(CO_{2})$

=> Hydrogen sulphide $(H_{2}S)$

=> Siloxanes

=> Moistures.


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