PA4203 Plastic Recycling Technology Syllabus:
PA4203 Plastic Recycling Technology Syllabus – Anna University PG Syllabus Regulation 2021
OBJECTIVES:
To emphasize the fundamentals and importance of plastics recycling.
To know various sources of plastics waste generation
To know recycling codes of commodity and engineering plastics.
To impart the knowledge on various sorting and separation techniques.
To highlight recycling procedures for commodity and engineering plastics.
To familiarize rubber recycling procedures.
UNIT I FUNDAMENTALS OF PLASTICS RECYCLING
Need for recycling –Source of Plastic waste–depolymerization-Thermal depolymerization- Ceiling temperature and its importance–Degradation–Biodegradation, Primary, Secondary and Tertiary recycling.
UNIT II RECYCLING OPERATIONS
Sorting and separation techniques–Density based–Optical sorting–Electrostatic sorting –Sorting by melting temperature–Sorting by selective dissolution-sorting of metal contaminants, size reduction cutting–Densification–Pulverization–Chemical methods, melt filtration of contamination in recycled plastics–screen changers–filtration requirements of different recycled plastics-Pyrolysis.
UNIT III RECYCLING OF MATERIALS- I
Recycling of PET–PET separation–Melt reprocessing–Chemical reprocessing–Energy recovery– application. HDPE recycling–Application of HDPE recyclate–LDPE recycling–Application of LDPE recycle LDPE–film recycling–Polypropylene recycling–Application of recycled PP–Recycling of polystyrene-Application of Recycled EPS. Nylon recycling–Chemical recycling – Mechanical recycling–applications Depolymerization of PMMA.
UNIT IV RECYCLING OF MATERIALS- II
Recycling of Engineering Thermoplastics–PC–ABS Mechanical and chemical recycling of polyacetals– Uses, recycling of polyurethanes–Physical methods–Chemical methods, Feedstock recycling and energy recovery. Recycling of Thermoset composites–grinding of SMC – selective chemical degradation of SMC scrap–solvent recycling – pyrolysis – Energy recovery from SMC scrap – Recycling of thermoplastics composites. Recycling of PVC – Separation techniques for PVC and PET– size reduction–melt filtration – Mechanical recycling–chemical recycling – Energy recovery– applications. Feedstock Recycling – Pyrolysis–kiln / Retort – Fluidized bed–application–Hydrogenation of plastics waste–Gasification–different gasification process – economic aspects – Incineration of plastic waste with energy recovery.
UNIT V RUBBER RECYCLING
Tyre size reduction–Application of ground Rubber crumb–Filler–Bound Rubber products– Thermoplastics binder–Civil engineering applications–Surface treated crumb rubber– applications– Rubber reclaiming and devulcanization scrap rubber and fuel source (Tyre derived fuel TDF)– Pyrolysis.
TOTAL: 45 PERIODS
OUTCOMES:
At the end of the course, students will be able to
Understand the impact of plastic waste on the environment.
Sort and separate mixed plastics.
Apply the principles of various methods of recycling and relate the methods to various polymeric materials.
Understand the need for recycling and the classification of recycling methods.
Recycle domestic and engineering thermoplastics.
Acquire knowledge of various techniques for rubber recycling
REFERENCES
1. Ann Christine Albertson and Samuel J Huang, Degradable Polymers, Recycling And Plastics, Marcel Dekker Inc, 1995.
2. Gerald D Andrews and Pallatheri M Subramanian, Emerging Technologies in Plastics Recycling, ACS Symposium Series, 513, 1992.
3. John Scheirs, Polymer Recycling Science, Technology and Applications, John Wiley & Sons, 1998.
4. Mustafa.N. Plastics Waste Management Disposal Recycling and Reuse, Marcel DekkerInc, 1993.
5. Randall Curlec, T. and Sujit Das, Plastics Wastes: Management Control, Recycling and Disposal, US Environmental Protection Agency, Noyes Data Corporation, 1991.