Micronized plastic waste recycling using two-disc tribo-electrostatic separation process

Bouhamri, Noureddine; Zelmat, Mohamed Elmouloud; Tilmatine, Amar

doi:10.1016/j.apt.2018.12.012

Cited by 18 publications

(5 citation statements)

References 22 publications

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“…The efficiency depends on several factors including the high-voltage level, the rotating speed of the disks, the fluidization rate, the total mass of the fluidized bed and the composition ratio of the granular mixture. The analytical methods need to be used to develop a correlation between the particle system, the particle properties, and the chargeability adapted ( Landauer and Foerst, 2018 , Bouhamri et al, 2019 ). The recycling of a mixture of polycarbonate and polyamide plastics from waste electrical and electronic equipment using electrical and electronic equipment has been reported.…”

Section: Recent Developments In Plastic Regeneration and Recoverymentioning

confidence: 99%

“…Micronized plastic waste recycling: Recently, triboelectrostatic separation of a mixture of granular pure virgin micronized white polyvinylchloride particles (WPVC) and gray polyvinylchloride(GPVC) particles containing a small percentage of carbon of average size 100 µm has been carried out experimentally. It has been observed that the separation is efficient and the efficiency of the process depends on the rotating speed of the disc, the fluidization rate, the total mass of the fluidized bed and the composition ratio of the granular mixture and applied potential difference ( Bouhamri et al ., 2019 ) ( Fig. 16 ).…”

Section: Recent Developments In Plastic Regeneration and Recoverymentioning

confidence: 99%

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Regeneration and Recovery of Plastics

Karmakar

2022

Encyclopedia of Materials: Plastics and Polymers

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Section: Recent Developments In Plastic Regeneration and Recoverymentioning

confidence: 99%

Section: Recent Developments In Plastic Regeneration and Recoverymentioning

confidence: 99%

Regeneration and Recovery of Plastics

Karmakar

2022

Encyclopedia of Materials: Plastics and Polymers

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“…Immersed objects in fluidized beds have received considerable attention in recent studies, highlighting their critical role in influencing bed dynamics and reactor performance [22]. Researchers studied a variety of immersed objects, ranging from static internals, such as baffles [23] and heat exchangers [24], to dynamic elements, like moving packings [25] and disks [26]. These studies showed that immersed objects can have a profound effect on particle distribution and movement, gas flow patterns, and heat transfer within the bed.…”

Section: Introductionmentioning

confidence: 99%

Hydrodynamic Insights on Floating Bubbling Fluidized Beds: Dynamic Solutions for Mitigating Gas Maldistribution

Sarbanha,

Larachi,

Taghavi

2024

Energies

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This study examined bubbling fluidized beds as an alternative to fixed-bed dry scrubbers on ships for reducing pollutants from marine fuels. It focused on overcoming the challenges of gas maldistribution/slug formation, especially under rough sea conditions. This research departed from traditional methods by introducing mobile internal elements into the bed emulsion phase and investigating their effectiveness in various settings, such as vertical, inclined, and rolling beds. A specialized hexapod-driven bubbling fluidized bed was developed to mimic marine operating conditions and to study the behavior of shipboard fluidized beds. Techniques such as digital image analysis (DIA) and particle image velocimetry (PIV) were used to observe bubble dynamics and granular phases, measuring local void fractions and particle velocities. A key finding is the effectiveness of moving internals in preventing bubble coalescence, which is critical for avoiding wall slugs, at different inclinations. Three types of packing were used as mobile internals: Super Raschig, Pall, and square rings. Super Raschig rings, which are characterized by high porosity, were the most efficient in reducing bubble coalescence, making them a preferred choice for offshore fluidized bed applications. This research contributes to the advancement of fluidized bed technology in marine applications and provides insight for future improvements.

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“…Triboelectric charging occurs in almost every system involving moving particles: in pneumatic conveying [6,7], fluidized beds [8], dry powder mixing [9], dust storms [10,11], or even during the formation of planets in the orbit [12] In most cases, the triboelectric charging of powders is undesirable. However, this effect can be employed as a novel separation tool for fine and dry powders [13][14][15][16][17][18]. The net amount of charge at the surface of one particle acts as a separation feature.…”

Section: Introductionmentioning

confidence: 99%

Influence of Particle Contact Number on Triboelectric Separation Selectivity

Landauer

Foerst

2019

Processes

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Triboelectric separation is a promising technology to separate fine powders. To enable triboelectric separation for its application in industry, the impact of the process and product parameters must be examined. In this study, with regards to different wall materials in the charging step (PTFE, POM, PE, PVC, and PMMA), the influence of the powder composition of a binary starch-protein mixture with a protein content of 15 wt.%, 30 wt.% and 45 wt.% was studied. By increasing the protein content in the feed, the separation selectivity increased. No dependency of the empirical triboelectric series was determined for all powder compositions. The variation in the protein content of the initial powder and turbulent flow profiles results in a variation in the contact number of particles calculated. An increase in the contact number of particles leads to an increase in the protein content separated on the cathode, whereas the protein content on the anode is only slightly affected. These findings underpin the assumption that particle-particle interaction plays a decisive role in triboelectric charging of fine powders.

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Micronized plastic waste recycling using two-disc tribo-electrostatic separation process

Cited by 18 publications

References 22 publications

Regeneration and Recovery of Plastics

Regeneration and Recovery of Plastics

Hydrodynamic Insights on Floating Bubbling Fluidized Beds: Dynamic Solutions for Mitigating Gas Maldistribution

Influence of Particle Contact Number on Triboelectric Separation Selectivity

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