**5. Conclusion**

Globally, disposal of postconsumer or waste thermoplastics into the environment is alarming and posed a serious economic, environmental, health, and social burden. Employing appropriate technology, especially mechanical recycling with modifications of thermoplastics, can save the world from threat that might be posed by thermoplastic wastes. Appropriate additives such as natural fibers and fillers with eco-friendly, less expensive, available, and degradable potentials should encourage saving the world from this serious menace. The use of recycling technique with appropriate modification will not only exhibit conservation of the waste thermoplastics but altered the physical, rheological, mechanical, electrical, and thermal properties of the recycled thermoplastics for effective applications. An effective and sustainable application of recycled thermoplastics depends on optimization of process conditions, parameter, modifying agents and techniques, equipment, and time. Hence, the quality and performance of the recycled aggregates or composites are enhanced.
