Progress in Separating Plastic Materials for Recycling

Dodbiba, Gjergj; Fujita, Toyohisa

doi:10.1080/14786470412331326350

Cited by 84 publications

(40 citation statements)

References 33 publications

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“…The process of electrostatic separation of plastics [31,34,52,341,342] is carried out to recover valuable secondary raw materials from production or post-consumer wastes.…”

Section: Physical Backgroundmentioning

confidence: 99%

Electrostatic Separation

Dötterl

Wachsmuth

Waldmann

et al. 2016

Ullmann's Encyclopedia of Industrial Chemistry

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“…The process of electrostatic separation of plastics [31,34,52,341,342] is carried out to recover valuable secondary raw materials from production or post-consumer wastes.…”

Section: Physical Backgroundmentioning

confidence: 99%

Electrostatic Separation

Dötterl

Wachsmuth

Waldmann

et al. 2016

Ullmann's Encyclopedia of Industrial Chemistry

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“…It is intended for applications that require good impact resistance balanced with high stiffness. The original pellets have a melt mass-flow rate of 5.8 g/10 min (2.16 kg at 230°C) and a density of 0.905 g/cm 3 .…”

Section: Experimental Partmentioning

confidence: 99%

“…Currently, the energetic recovery of plastic wastes is achieved through easy options as incineration, which may cause the emission of harmful gases together with generation of toxic fly and bottom ash that contain lead and cadmium [3][4][5]. Moreover, energy recovery is a consumptive recycling process, turning the recycled material into energy rather than usable material, and thus does not conform to the reuse-ration required by the European legislations and directives [6].…”

Section: Introductionmentioning

confidence: 99%

Elaboration and Characterization of Traced Polypropylene with Rare Earth Oxides for Automatic Identification and Sorting of End-of-Life Plastics

Bezati

Massardier

Frœlich

et al. 2010

Waste Biomass Valor

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The rare earth oxides can be used as tracers forthe identification of polymer materials. This study focusedon the detection of these particles and their effects on themechanical and thermal properties of polypropylene (PP).A new method was carried out to increase the sortingselectivity of PP during end of life recycling process and toimprove the efficiency of sorting and its high speed identification.The tests were realized in a test system devicewhich allows the collection of static measurements of thesamples spectrum through the use of energy dispersiveX-ray fluorescence technology. Five of the seven tracerstested are clearly visible and distinguishable from thebackground sample by their Ka1 energy line at concentrationlevels of 0.1 and 0.145 wt%. For the two remainingtracers, their Ka1 energy lines come out at the same domainof energy as the source. Dispersion of rare earth oxides at0.1 and 1 wt% do not have a significant impact on thecrystallization and melting temperature as well as on thetemperature of maximum decomposition rate. The additionof 1 wt% of rare earth oxides leads to a slight increase ofthe flexural modulus, whereas the addition of 0.1 and 1wt% causes a decrease of the elongation at break. SEMimages show a homogenous dispersion of tracers in the PPmatrix.International audienceAbstract The rare earth oxides can be used as tracers forthe identification of polymer materials. This study focusedon the detection of these particles and their effects on themechanical and thermal properties of polypropylene (PP).A new method was carried out to increase the sortingselectivity of PP during end of life recycling process and toimprove the efficiency of sorting and its high speed identification.The tests were realized in a test system devicewhich allows the collection of static measurements of thesamples spectrum through the use of energy dispersiveX-ray fluorescence technology. Five of the seven tracerstested are clearly visible and distinguishable from thebackground sample by their Ka1 energy line at concentrationlevels of 0.1 and 0.145 wt%. For the two remainingtracers, their Ka1 energy lines come out at the same domainof energy as the source. Dispersion of rare earth oxides at0.1 and 1 wt% do not have a significant impact on thecrystallization and melting temperature as well as on thetemperature of maximum decomposition rate. The additionof 1 wt% of rare earth oxides leads to a slight increase ofthe flexural modulus, whereas the addition of 0.1 and 1wt% causes a decrease of the elongation at break. SEMimages show a homogenous dispersion of tracers in the PPmatrix

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“…At present, there are three main alternatives in addition to landfilling [2]: (1) energy recovery (sometime known as thermal recycling), i.e. the direct incineration of plastic wastes for energy recovery; (2) mechanical recycling (also known as material recycling), i.e.…”

Section: Introductionmentioning

confidence: 99%