Dry thermophilic Digestion of wheat strawNew economically sustainable technology for production of bio methane and organic fertilizer

Improve both C/N ratio and acidity of the soil Positive environmental impact on the

atmosphere Production of Bio gas / potential upgrade to bio

methane Prevent further spent of agricultural land for

production of bio fuel Production of organic fertilizer Economically sustainable technology

Achievements:

Core of the innovation Pretreatment of the wheat straw solve

the biggest issues in the digestion process:

Very strong lignin coat which blocks the enzymes and bacteria access to the cellulose

Very low content of the Nitrogen in the wheat straw

Before and after pretreatment

Is there something unique Pretreatment with the same impact are

known Economically efficient pretreatment with

the same result are not yet patented Registration of the patent are under way The first industrial implementation are

funded both by esteemed local bank and Norwegian donor organization

Heroes of the story

Potential Is there fuel suitable for both diesel and

gasoline engines? Is it possible to produce this fuel in

efficient and sustainable way? Is there enough input for production of

this fuel? Is it possible to plan the production of

this fuel? Are the co-products dangerous?

Impact of the technology Annual co-product of wheat in Bulgaria is

roughly 5 mio tons 1000 cubic meters 97 % of bio methane are

derived from 4.7 tons wheat Production of Organic fertilizer with better

environmental impact compare to chemical one Strongly support the employment and

development in agricultural area (technology is not appropriate for the economy of scale biggest running cost is linked to the transportation of both input and outputs)