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Technology for License:

Utilization of Grape Marc and Vinasse Via a Two-Phase Composting Procedure    

A European SME has developed a new procedure for composting of grape marc and vinasse.

Overview

The placement of the enormous amount of waste grape marc generated in all over the world is an increasing problem. By processing 100 kilograms of grape-vine approximately 20-25 kilograms of grape marc is produced. From this grape marc high agronomic value compost can be produced by the offered technology.
The offered two-phase composting technology is suitable for composting of fresh grape marc and other subsidiary raw materials. After distillation an environmentally friendly end-product can be produced. The whole composting process is not longer than 70-90 days.

The grape marc and vinasse compost produced by the offered technology is more advantageous than other composts and manures in many respects. Other composts and manure may contaminate the soil by their toxic element content, and may significantly reduce the amount and diversity of N-fixing and other useful bacteria.

The grape marc compost contains high amounts of organic and inorganic colloidal constituents, which means it can be easily used as inocula.

Primary Application of the Technology

Grape processor companies

Competitive Advantage

- Grape marc and vinasse are produced in every wine-producing farm locally, so it is not necessary to transport them to great distances and to pay for take-over.
- High agricultural value compost can be produced and by returning it to the soil a 20-30% harvest yield can be achieved.
- Its nutritive substances will be easily absorbed by plants.
- Unlike manure, grape marc compost only contains a minimum amount of germinative weed-seed.
- The optimal dosage of 12-15 tons/hectares is significantly lower than the 20-40 tons/hectare in anaerobic digested cattle manure.

Notes on Development Status

International patent is granted.