treatment and recycling of plastic

1. TREATMENT AND
RECYCLING OF PLASTIC
PRESENTED BY
17BCH012
17BCH037

2. PLASTIC
 A wide range of synthetic or semi synthetic organic solid materials suitable for the
manufacture of industrial products.
 Plastics are polymers of high molecular weight.
 They may contain other substances to improve performance and/or reduce costs.

3. WHY RECYCLE?
 In landfill, both synthetic and naturally occurring polymers don’t get the necessary
exposure to UV and microbes to degrade.
 Landfills not destroy plastics , it preserve the poison forever.
 The toxic chemicals escape from the landfills and contaminates the water sources.

4. RECYCLING PROCESS
 Plastic recycling is the process of recovering scrap or waste plastic and
reprocessing the material into useful products, sometimes completely different in
form from their original state.
 Recycling is a viable alternative in getting back some of the energy stored in the
polymers.

5. PLASTIC RECYCLING PROCESS

6. 1.COLLECTION
 The first step in the recycling process is always collecting the plastic material that is
to be recycled.
 This step is completely reliant upon businesses, restaurants, and the public to
dispose of their plastic waste in the correct place. If plastic waste is disposed of in
normal trash bins, it will not be recycled, so it is extremely important to separate
common waste and plastic waste.

7. 2.SORTING
 After plastics are collected and transported to a recycling facility, the next step is
sorting.
 Machines sort plastics into different areas based upon properties that are
dependent upon the recycling facility or what final product is being produced.
 Plastics are usually sorted in a few common ways, such as the type of plastic
(material it is made with), color of the plastic, or even how it was made. This is
important because different types of plastics must be processed in different ways
and some recycling facilities are only capable of recycling one type of plastic.

8. 3.WASHING
 plastics must be washed before they are further processed. The goal of this step is
to remove impurities and everything that is not made from plastic.
 Most containers and packages have labels, adhesive, or even food residue that
must be removed. This non-plastic waste cannot be recycled and can cause the
final product to have poor structural integrity

9. 4.RESIZING
 Resizing consists of shredding or granulating the plastic waste into small particles.
This increases the surface area of the plastic, making it easier to process, reshape,
and transport if needed.
 Additionally, it gives recycling facilities one last opportunity to remove any non-
plastic waste that has made it through the first 3 steps of processing. This is often
done with metal detectors or magnets that will help remove any leftover metal in
the mixture

10. 5.IDENTIFICATION AND SEPARATION
 The identification and separation of plastics is when the now small plastic particles
are tested to determine their quality and class.
 The first quality tested is density.
 Next is air classification.
 Two other features plastics are commonly tested for are their melting point and
color.

11. 6.COMPOUNDING
 Compounding is when the small particles are smashed and melted together into
plastic pellets. The pellets can then be used in the production of other plastic
products.
 Throughout this process the plastic may be moved to different plants to specialize
in different steps of the process.

12. WHAT TYPE OF PLASTIC CAN BE RECYCLE

13. PET (Polyethylene terephthalate)
The easiest and most common plastics to recycle are made of polyethylene
terephthalate (PET) and are assigned the number 1. It can also be used to make
beanbags, rope, car bumpers, tennis ball felt, combs, sails for boats, furniture and, of
course, other plastic bottles
HDPE (High-density polyethylene plastics)
Number 2 is reserved for high-density polyethylene plastics (HDPE). This Plastic is
labeled with the number 2 is often recycled into toys, piping, truck bed liners, and

14. PVC (Vinyl)
Polyvinyl chloride, commonly used in plastic pipes, gets number 3. It is comprised of
many toxins which make it difficult to recycle.
PS (polystyrene)
It has number 6. when it heated in the microwave, the food contained within it
to absorb leached styrene. And it is toxic to animals as well as humans, which is why
not recyclable.

15. EXAMPLE: RECYCLING OF A PLASTIC
BOTTLE
• Collection
• Sorting
• Resizing
• Melting
• Can be sold

16. ADVANTAGES OF RECYCLING
 Waste reduction
 Conservation of energy
 Save money
 Create new jobs
 Generate revenues
 Provides a sustainable source of raw materials to industry

17. THANK YOU!

18. https://youtu.be/Zh4F3sZNLqA
video