Air quality monitoring and management methods
- 2. Treatment Of Plastic Waste Submit by MUHAMMAD AZEEM Reg # 2019-ag-9171 To Dr.Ch.Arslan
- 3. INTRODUCTION The term “Plastic” includes materials composed of various elements such as carbon, hydrogen, oxygen, nitrogen, chlorine and sulphur It is one of the few new chemical materials which pose environmental problem. Polyethylene is largely use in Manufacturing of plastics.
- 4. BACKGROUND The waste quantities increased from 46 million tones in 2001 to 65 million tones in 2010. Report says that per capita per day production will increased to 0.7 kg in 2050. The characteristics of waste depends on various factors such as food habits, Traditions, lifestyel, climate etc.
- 5. ENVIRONMENTAL ISSUES ON DISPOSAL OF PLASTIC WASTE Plastic pollute beaches & oceans. Plastic bags litter the landscape.
- 6. o Plastic bags kill animals. o During product manufacturing various types of gases are released. o Indiscriminate plastic waste disposal on land makes the land infertile due to its impervious nature. o Burning of plastic generates toxic emissions such as Carbon Monoxides, Chlorine, Hydrochloric Acid, Dioxin, Furans, Amines, Nitrides, Styrene, Benzene, 1, 3- butadiene, CCl4 and
- 7. CONVENTIONAL TECHNOLOGY FOR PLASTIC WASTE MANAGEMENT Recycling Landfilling Incineration
- 8. RECYCLING Plastics recycling technologies have been historically divided into three general type : Primary, Tertiary and Quaternary. Steps Involved In The Recycling Process segregation : - The plastics waste shall be segregated as per the codes mentioned in the BiS guidelines. Processing :- After selection and segregation of the preconsumer waste shall be directly recycled. The post consumer waste shall be washed, shredded, agglomerated, extruded and granulated.
- 9. Landfilling Landfill is the conventional approach to waste management, but space for landfills is becoming scared in some countries. A well-managed Landfill site result in limited immediate environmental harm beyond the impacts of collection and transport, although there are long-term risks of contamination of soils and groundwater by some additives and breakdown by products in plastics, which can become persistent organic pollutant. A major drawback to landfills from a sustainability aspect is that none of the material resources used to produce the plastic is recovered.
- 10. Incineration Incineration reduces the need for landfill of plastics waste, however, there concerns that hazardous substances may be released into the atmosphere in the process. Incineration can be used with recovery of some of the energy contents in the plastic. The useful energy recovered can vary considerably depending on whether it is used for electricity generation, combined heat and power, or as solid refuse fuel for co-fuelling of blast furnaces or cement kilns.