Plastic Recycling & Waste Management — Summer 2024

Define Pyrolysis and list the advantages of Pyrolysis process.

State the identification codes of the following i) PET ii)PP iii)PVC

Explain the float sink separation technique to separate mixtures of plastics with a neat flow diagram.

Define the following i)Nuisance Plastics ii)Tertiary Recycling iii) Primary Recycling

Describe the recycling of HDPE containers with a neat flow diagram

Explain the flow of Plastic products and plastic waste with a neat sketch.

Describe various size reduction methods for municipal solid refuse

Discuss the technical problems encountered in primary recycling of plastics.

Explain the recycling of PVC film scrap.

List the methods to separate mixture of Paper with Plastic and explain any one.

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

Discuss about concept of 4R’s in Recycling of Plastics.

Explain any one Cryogenic Grinding technique for granulating difficult materials with a neat sketch

Discuss about the use of plastic waste as fillers for secondary Recycling.

Explain the Reverzer equipment used for mechanical reworking of mixed plastic waste by secondary recycling.

Explain the degradation of PET by glycolysis, hydrolysis and methanolysis.

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

Describe the properties used as a basis for separation of solid wastes.

Discuss the Problems associated with the incineration of pure plastic waste1

Discuss about the Klobbe machine for secondary recycling of plastics.

Explain the Union Carbide pyrolysis system for the pyrolysis of plastics

Describe various environmental implications of Recycling and Polymer Degradation.

Draw and explain the in-line automatic recycling system for primary recycling of plastic waste.

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

Explain about medical plastic waste management.