Definition of Environmental Technologies

A second category of environmental technologies is represented by recycling technologies, which transform wastes in order to re-use them. Recycling can be pursued either within the production process or by means of different solutions. 

With respect to the chemical industry, these technologies aim to reduce, prevent and utilise residues. The term residue denotes all components that take part in the chemical reaction, but that are not included in the end product (Wiesner et al., 1995). Because joint production is a constant characteristic of chemical production processes, the existence of residues is very common in this sector. 

In addition to clean technologies, green products are those products obtained with recycled or less harmfijl inputs, or which generate less pollution during their life. Examples of green products are fuel without lead, detergents with low content of phosphorus, and biodegradable plastics. 

It is worth noting that the term clean or green has a relative and not an absolute meaning. Clean technologies and products are not absolutely clean, but cleaner than existing ones. It is also important to note that the boundaries 

1) Decontamination of soil A.2.2) Decontamination of ground water A.3) Treatment of wastes 

---