**5. High temperature plasma studies for quaternary recycling**

The recovery of plastic's energy content can be achieved through *Quaternary recycling* methods. Incineration aiming at the recovery of energy is currently the most effective way to reduce the volume of organic materials. Although polymers are actually high-yielding energy sources, this method has been widely accused as ecologically unacceptable owing to the health risk from air born toxic substances e.g. dioxins (in the case of chlorine containing polymers). To achieve improved and efficient combustion, exploratory studies were carried out using air plasma. The mass reduction factors observed for various components of desalination membranes are as shown in **Table 3** below.

The elemental composition of the residue for trail 1 with RO-TFC membranes are as shown **Table 4** below.


#### **Table 3.**

*Air plasma studies for desalination membrane management.*

