Plastic Recycling & Waste Management — Winter 2021

Write the identification codes of the following i) HDPE ii)PVC iii)PET

Describe about the sources of Plastic Waste.

With a neat sketch explain the flow of Plastic products and plastic waste.

Define the following Terminologies i)Tertiary Recycling ii)Nuisance plastics iii) Primary Recycling

Explain the recycling of HDPE containers with a neat flow diagram.

With a neat flow diagram, explain the float sink separation technique to separate mixtures of plastics.

Explain the recycling of medical plastic waste

List and explain the physical properties used as a basis for separation of solid wastes .

Define Pyrolysis. List the advantages of Pyrolysis process

With a neat sketch describe any one Cryogenic Grinding technique for granulating difficult materials

Explain the Recycling of PP/HDPE woven sacks to pellets.

Write a short note on the Mitshubishi Reverzer equipment used for mechanical reworking of mixed plastic waste through secondary recycling

List and explain the Problems associated with the incineration of pure plastic waste

Explain the use of plastic waste as fillers for secondary Recycling

With a neat sketch explain briefly the types of pyrolysis systems used for pyrolysis of municipal solid waste

Write a short note on techniques used for Recycling of PET.

Write a short note on Granulators used for Primary Recycling of Plastics.

Describe with a neat sketch, the Secondary Recycling of Plastics by Co Extrusion technique1

List the methods to separate Paper/Plastic Mixtures and explain any one.

Explain the working of a Klobbe machine for secondary recycling of plastics.

List and explain briefly the parts of an incinerator

Explain the environmental implications of Recycling and Polymer Degradation.

What is Sanitary Landfill? Explain briefly the process of sanitary landfill

Explain briefly the concept of 4R’s in Recycling of Plastics

Explain the separation of plastics from plastic-coated fabric