1. The economic process as a physical process
1.1 The budget of the materials
1.2 The temodynamics bond to the economic activity
1.3 The flow of the materials in the economic process

2. The recycling
2.1 The typologies of the recycling
2.2 The factors of which we can determine the posssibility
2.3 The sustainability economy
2.4 The rate of recycling

3. The dilemma of the environment economy
4. The definition of the supportable development

The budget of the simplified materials
Extraction
Cultivation Manufacture Consumption
Emission of non-product
Recycling
Environment as waste shelter
Transformation
Activity
Environmental danger

1.2 The term dynamics bond to the economic activity
 The whole material / energy that is extracted from the environment is returned in other form at the end of the economic process
 Not all the discards of the economic activity can be recycled (law of the entropy)

Diagram of the simplified materials flow
Environmental
Resources natural resources Biosphere
Extraction of natural resources and collection activities
Residues emission
Earth, Air , Water
Communal or ambient unloading
The bases of working and manufacturing activity
Residues emission

Basic material: Plates
, Bar, Ingot
Activity of transformation and manufacture
Residues emission i
Final
Products
Distribution
Residues emission
Biosphere
Earth, Air, Water
Consumption
Residues emission
Communal or ambient unloading

2.1 The typologies of the recycling
- INTERNAL RESIDUAL in the process of cultivation
- IMMEDIATE RESIDUAL from the transformation / manufacture
- COMMERCIAL RESIDUAL the wraps and the packings
- POST-USER RESIDUAL the wastes of the families
- THE REUSE of a disuse practice ...

2.2 Factors that influence the possibility of recycling
Volume of the recycled material
- The homogeneity of the material
- The contamination
- The location
They are more easily recycled the residuals of the high part of the economic flow

2.3 The economic support
- To compare the benefit with the private cost
- Keep track of
•
• The relative prices of the recycled
Material and the non ones the structure
•
• of final employment of the materials
The technological progress in the use and riuse of the materials
The cultural values of the society

2.4 - Recycling Rate
R = t of recycled material t of available material for the recycling
> If it include the importations of material
> Rate of use (activity of rcicilaggio)
- If it does not include the importations

3. I The dilemma of the environment economy
 The environment as economic resource
(renewable and not) and as discharge / the environment as welfare to be enjoyed
 The needs of the recent generations and those of the future
How can the economy of market harmonize all these demands?

4. The supportable development
 Definition of the Bruntland Commission:
A development that satisfies the demands of the present without compromising the possibility of the future generations to satisfy their own needs is supportable