Abstract
Polystyrene usage has risen significantly in recent years as a result of its wide variety of applications. The persistent consumer demand for polystyrene resulted in the accumulation of polystyrene waste in landfills, inducing environmental degradation. Since polystyrene is a petroleum-derived material, the increasing demand for it resulted in the depletion of petroleum, a non-renewable energy source. Research teams from all over the world have invented many methods for dealing with polystyrene waste, including recycling and energy regeneration. However, there are drawbacks to recycling methods, such as the fact that they need a lot of manpower in the separating procedure and pollute the water, reducing the process's sustainability. Because of these flaws, the experimenters have cantered their efforts on the energy harvesting approach. As petroleum is the primary component of polystyrene, the pyrolysis process for recovering fuel oil from polystyrene is an useful technology because the retrieved oil has a higher calorific value than commercially available gasoline. The current paper discusses polystyrene conversion technologies as well as the pyrolysis techniques for polystyrene, which generates end products such as oil, gas, and char. The impact of different processing parameters on the product yield has been addressed using more advanced techniques of conducting pyrolysis with a solvent.
Highlights
Polymer has played a critical importance in the advancement of human society for the past fifty years [1]
In Europe, nearly 25 million tonnes of polymer were eventually turned into garbage in 2012; around 38 percent of this discarded polymer was accumulated in landfills, 26 percent was reprocessed, and 36 percent was retrieved by energy harvesting techniques [4]
Once reprocessed, extended polystyrene foam residue ends up losing its foam featuresIt is practical to re-gas the recovered polystyrene, but this raises the price of the commodity relative to new material
Summary
Polymer has played a critical importance in the advancement of human society for the past fifty years [1]. Once reprocessed, extended polystyrene foam residue ends up losing its foam featuresIt is practical to re-gas the recovered polystyrene, but this raises the price of the commodity relative to new material As a result, it is used in solid state molding processes. This review paper addresses some of the above concerns and provides an up-to-date study of the different approaches for pyrolysis of PS waste that have been used so far This graph depicts the global distributions of polystyrene (PS) production potential by area in 2016. A substantial quantity of increased PS is regularly discarded at wholesale markets, supermarkets, department stores, restaurants, and shops, as well as machine fabrication plants It is obtained as a reusing product by the recycling workers. Waste products should be thoroughly cleaned to eliminate any trapped food or dirt particulates, metallic covers and glass containers should be removed from unprocessed
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