Electrostatic separation of polymer waste by tribocharging system based on friction with PVC

Rodrigues, Bruno; Saron, Clodoaldo

doi:10.1007/s13762-021-03229-x

Cited by 14 publications

(7 citation statements)

References 26 publications

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“…The separation purity of the two types of plastic particles can reach more than 90% or 99%. [37][38][39] The purity of the three types of plastic particles can exceed 95% after two electrostatic separations. [40] However, in this study, the theoretical purity of the one-pass separation was $90%, and the purity of the experimental products was lower.…”

Section: Comparative Analysis Of Theoretical and Experimental Resultsmentioning

confidence: 99%

“…Based on the aforementioned analysis, the charge-mass ratios of PP and PE follow a normal distribution. The probability density function [Equations (37) and (38)] of the charge-mass ratio of PP and PE is obtained based on the average and standard deviation listed in Table 1, and the probability density function curve is derived using MATLAB (Figure 7).…”

Section: Theoretical Calculationmentioning

confidence: 99%

“…Equation ( 39) derives the probability that the horizontal displacement of PP is greater than À12.64 cm or the probability that the charge-mass ratio of PP is greater than À12.7127 nC/g. Substituting a charge-mass ratio of À12.7127 nC/g into Equation (37), the probability that the charge-mass ratio of PP particles is greater than À12.7127 nC/g is 93.25% and PP particles entering compartment 2 is 93.25%. Similarly, the probability of the PE particles entering compartment 3 is 89.08%.…”

Section: Theoretical Calculationmentioning

confidence: 99%

“…1 Rodrigues [37] Free-fall PVC/HDPE 1 PVC: 91 ± 5 HDPE: 91 ± 4 PVC/PET PVC: 98 ± 2 PET: 81.1 ± 0.5 2 Silveira [38] Roll-type PP/HDPE 1 PP: 93.5 ± 2.1 HDPE: 92.0 ± 1.2 3 Calin [39] Free-fall HIPS/ABS-PC 1 HIPS: 99.5 ABS-PC: 99.5 HIPS/ABS HIPS: 99.8 ABS: 99.8 4…”

Section: Nomentioning

confidence: 99%

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Purity prediction of the two‐stage high voltage electrostatic separation of a mixture of three polymers

Tian

Zhang

2022

Polymer Engineering & Sci

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Clean and efficient separation is an important requirement for the high‐value‐added recycling of end‐of‐life automobile polymers. In this study, polymer particles for vehicles were considered as research objects, and a two‐stage electrostatic separation device was designed to separate a mixture of three polymer particles. A kinematic model of friction‐charged particles in a two‐stage free‐fall separator was established. Then, a suitable time period for triboelectrostatic charging with regard to electrostatic separation was determined, and a charge–mass ratio distribution of mixed‐polymer particles, that is, polyamide (PA), polypropylene (PP), and polyethylene (PE), was measured using a Faraday cage based on the triboelectrostatic charging experiment of three types of particles in a friction barrel‐type tribocharger. The theoretical purities of PA, PP, and PE were calculated using the motion and particle charge–mass ratio distribution models were 100.00%, 89.51%, and 92.95% respectively. The experimental purities of PA, PP, and PE were 94.68%, 80.76%, and 84.27%, respectively, which is consistent with the theoretical purity. Results of the study can provide a theoretical and experimental reference for one‐pass electrostatic separation of three kinds of plastic particles.

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Section: Comparative Analysis Of Theoretical and Experimental Resultsmentioning

confidence: 99%

Section: Theoretical Calculationmentioning

confidence: 99%

Section: Theoretical Calculationmentioning

confidence: 99%

Section: Nomentioning

confidence: 99%

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Purity prediction of the two‐stage high voltage electrostatic separation of a mixture of three polymers

Tian

Zhang

2022

Polymer Engineering & Sci

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“…Sedimentation and gravimetric methods are excellent for the separation from polyolefins, due to the large difference in density between the materials [ 45 , 46 , 47 , 48 ]. In separation from PET, high efficiency is achieved using electrostatic-, flotation- or hardness-differencing methods [ 49 , 50 , 51 , 52 , 53 , 54 , 55 ]. For pulverised materials, hydrocyclones can be used [ 56 ].…”

Section: Pvc Recyclingmentioning

confidence: 99%

A Brief Review of Poly(Vinyl Chloride) (PVC) Recycling

Lewandowski

Skórczewska

2022

Polymers

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Bearing in mind the aspiration of the world economy to create as complete a closed loop of raw materials and energy as possible, it is important to know the individual links in such a system and to systematise the knowledge. Polymer materials, especially poly(vinyl chloride) (PVC), are considered harmful to the environment by a large part of society. The work presents a literature review on mechanical and feedstock recycling. The advantages and disadvantages of various recycling methods and their development perspectives are presented. The general characteristics of PVC are also described. In conclusion, it is stated that there are currently high recycling possibilities for PVC material and that intensive work is underway on the development of feedstock recycling. Based on the literature review, it was found that PVC certainly meets the requirements for materials involved in the circular economy.

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Theoretical and experimental study on the triboelectric separation of ternary plastics combination using fluidized bed

Shi

Zhao

Zhang

et al. 2021

J Mater Cycles Waste Manag

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Electrostatic separation of polymer waste by tribocharging system based on friction with PVC

Cited by 14 publications

References 26 publications

Purity prediction of the two‐stage high voltage electrostatic separation of a mixture of three polymers

Purity prediction of the two‐stage high voltage electrostatic separation of a mixture of three polymers

A Brief Review of Poly(Vinyl Chloride) (PVC) Recycling

Theoretical and experimental study on the triboelectric separation of ternary plastics combination using fluidized bed

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