Environmentally Sound Management Of Waste Pet Bottles

Project and Seminar Material for Environmental Science

Environmentally Sound Management Of Waste Pet Bottles


This study has been carried out to assess the waste management of PET bottles and effectively manage the PET plastic bottles by identifying practical means and introducing recycling as cleaner production tool to achieve sustainable development goals. The science of post-consumer PET recycling is based on the fact that this polymer is non-degradable by nature. There has been a growing need for chemical recycling processes as a successful method for post-consumer PET transformation into monomers that can be used in the production of new bottles, textile materials, drug production etc. This research focused on the depolymerisation of waste PET bottles in alkaline medium with the aim of response surface methodology.

PET flakes from waste bottles were depolymerized at atmospheric pressure in alkaline solution of potassium hydroxide in selected aliphatic alcohols and glycol to produce terephthalic acid. Response Surface Methodology (RSM) based on Central Composite Design model was used, with design variables being temperature, reaction time and alkali concentration. The solid product was analyzed using FTIR and its acid value was determined.
From the results obtained, it was found that reaction models obtained are significant (p < 0.05 for alcohols), accounting to 98% of the variations observed. For ethanol media, the optimum condition for PET decomposition was 0.35g/L, 66.82mins and 2000C, which gave the decomposition of 79.4%. For propylene glycol, an optimum decomposition of 74.6% was obtained at a reaction temperature, time and alkali concentration of 2200C, 60mins and 0.5g/L respectively. For propylene glycol, the reaction time had more effect on the percentage decomposition, while temperature was the dominant factor for the ethanol media. Comparing the IR spectra of the final product obtained from the alcohol with that of pure terephthalic acid, it can be concluded that the solid product obtained was terephthalic acid which can be use in pharmaceutical industries as a raw material in producing certain drugs.

Environmentally Sound Management Of Waste Pet Bottles

Project Material Download

3,000 Naira

The complete material will be sent to you in just 2 steps.

Quick & Simple…

Step One Purchase

Make payment of ₦3,000: through USSD Transfer, Bank Mobile App, ATM Transfer, or POS Transfer to:

Access Bank PlcAccount No.: 0811003731
Name: Samphina Academy
Account Type: Current

Or Click Here to pay with Debit Card

Click Here to pay with Debit Card ($15)
GHANA – Make Payment of 60 GHS to MTN MoMo, 0553978005, Douglas Osabutey 


Step Two Purchase

Send the following details through Text Message or WhatsApp Messenger | +234-8143831497

  • Payment Details 
  • Email Address 
  • Environmentally Sound Management Of Waste Pet Bottles

The complete material will be sent to your email address after receiving your payment information | T & C Apply

  Contact Our Help Desk

You may also like:

⚠️ Need a different topic? Perform a quick search

Get A Complete Business Plan For Any Business In Nigeria

Business Plan for Businesses in Nigeria

  Business Plans in Nigeria

Environmentally Sound Management Of Waste Pet Bottles


This research material “Environmentally Sound Management Of Waste Pet Bottles” is for research purposes and should be used as a guide in developing your research project / seminar work. For no reason should you copy word for word (verbatim) as samphina.com.ng will not be liable for any who copied the material.

The aim of providing this material is to reduce the stress of moving from one school library to another all in the name of searching for research materials. This service is legal because, all institutions permit their students to read previous projects, books, articles or papers while developing their own works. According to Austin Kleon “All creative work builds on what came before”.

samphina.com.ng is only providing this material “Environmentally Sound Management Of Waste Pet Bottles” as a reference for your research. The paper should be used as a guide or framework for your own paper. The contents of this paper should be able to help you in generating new ideas and thoughts for your own research. Use it as a guidance purpose only.

How to defend your research work

This is a general guide on how to defend your research work:

1. Prepare For Questions:

If you are preparing for questions that may be asked during your defense, then your answers will flow smoothly and effectively. This will prove your knowledge on the subject e.g “Environmentally Sound Management Of Waste Pet Bottles“, and strengthening your argument. Ask friends and family, read your work for them to listen to your presentation, and write down questions. You may be lucky the panel will ask you those you have already prepared on.

2. Strong Summary:

Summarizing your chapters will help keep your audience focused because it is easy for a mind to drift, so providing summaries will ensure your panel will follow along, even if they lose focus for a brief moment. Visual aides, such as graphs and power-point presentations can be very helpful. If you are going to use these, make sure you will practice your presentation with them.

3. Be Confident in Your Research Work:

Not knowing your topic “Environmentally Sound Management Of Waste Pet Bottles” inside out will cause you to struggle and ultimately fail with your defense. You need to know the subject from every angle to ensure you are fully prepared for any question that may come your way.

4. Conclusion:

Reinforce your findings to conclude your defense. The finale of your presentation should focus on proving the work that has been done. You may need to recap on what has changed and remained unchanged, if is necessary.

5 . Listen:

Before you get defensive or recite a particular answer, make sure you truly understand the question being asked. Being a good listener is an important quality, because providing an inaccurate or off-topic answer will also weaken the validity of your paper.

Samphina Academy

Samphina Academy is an Online Educational Resource Center that is aimed at providing students with quality information and materials to aid them in succeeding in their academic pursuit.