eMagazine_Legacy_June19 | Seite 31

burgeoning demand is all set to grow . At 380 metric tonnes a year , we produce 190 times more plastic than we did in 1950 . If the demand for plastic continues to grow at its current rate of four per cent a year , emissions from plastic to production human health will reach . 15 per cent As of plastics global take emissions centuries by to 2050 degrade . This , toxic disposal increase landfill in the makes use of plastic only a will small surely contribution send to the emissions environment in theory and climate . However , as into much a shock as 40 unless per cent measures of landfill waste are taken is burnt to bring open down skies the , dramatically plastic exposure speeding . up the release More of than otherwise 99 per locked-up cent of carbon plastics . are manufactured from If we petrochemicals are to combat , most climate breakdown commonly , from reductions petroleum in plastic emissions and natural are gas clearly . These needed raw . Thankfully materials are , the refined solution to with the biggest potential is already in form ethylene , propylene , butene and other basic plastic building blocks , before being transported to manufacturers . The production and transport of these resins require an awful lot of energy — and , therefore , fuel . Greenhouse gas emissions also occur during the refining process itself — the “ cracking ” of larger hydrocarbons from petrochemicals into smaller ones suitable for making plastic releases carbon dioxide and methane . According to the study , about 61 per cent of total plastic greenhouse gas emissions comes from the resin production and transport stage .
A further 30 per cent is emitted at the product manufacturing stage . The vast majority of these emissions come from the energy required to power the plants that turn raw plastic materials into the bottles , bin bags and bicycle helmets we use today . The remainder occurs as a result of chemical and manufacturing processes — for example , the production of plastic foams uses HFCs , particularly potent greenhouse gases . The remaining carbon footprint occurs when plastics are thrown away . Incineration releases all of the stored carbon in the plastic into the atmosphere , as well as air pollutants such as dioxins , furans , mercury and polychlorinated biphenyls , which are toxic and damaging
www . legacyindia . in June 2019 | Legacy India 31