In recent decades, all the various sectors of industrial production have devoted increasing attention to ecologicaleenvironmental problems by:
- Evaluating the streams which enter or leave the traditional production process;
- Identifying the weak points of the process which could be involved in environmental problems;
- Researching solutions which could allow the reutilization of by-products or waste products as
secondary raw materials;
- Decreasing or eliminating processing aids which are not eco-compatible;
- Optimising the utilization of energy and water;