Separation of plastic wastes using froth flotation – An overview

Kökkılıç, Ozan; Mohammadi-Jam, Shiva; Chu, Pengbo; Marion, Christopher; Yang, Yuan; Waters, Kristian E.

doi:10.1016/j.cis.2022.102769

Cited by 39 publications

(12 citation statements)

References 278 publications

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“…Froth flotation is a physicochemical separation process based on the differences in surface properties of materials. The principle behind froth flotation is the attachment of the hydrophobic particles to air bubbles to be floated and recovered to the concentrate, while the hydrophilic particles are wetted by water and stay in the liquid phase Kokkılıç et al, 2022 Electrostatic separation…”

Section: Froth Flotation Methodsmentioning

confidence: 99%

Technological Considerations Regarding the Mechanical Recycling of Waste from Polyethylene and Polypropylene Packaging

Constantinescu¹,

Boata²,

Ilie³

et al. 2022

Proceedings of the 9th International Conference on Advanced Materials and Systems

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Plastic materials have found applications in almost all fields as a result of their properties and low price. More than 30% of the production of plastics is intended for obtaining packaging. Since they are non-biodegradable and represent a hazard to the environment, strategies and directives have been adopted at national, European, and global level, regarding the recycling of packaging waste. The main ecological method of recycling them is mechanical recycling. The paper presents the main stages of an industrial mechanical recycling process, namely: collection, sorting, grinding, washing, drying, (purification), granulation, packaging, storage and marketing. This underlines the fact that in order to obtain high-performance PE or PP raw materials from recyclable polymer waste from packaging, the recycling process requires advanced sorting to separate them into polymer classes, because the mixtures of the polymers involved are incompatible in their melted state. This incompatibility leads to the lower processability and physical-mechanical performance of the products manufactured from these types of recycled polymer waste. In addition to the sorting methods currently used in the industry, new advanced methods of selective sorting of waste according to the type of polymer were also presented, such as: spectroscopic method, selective dissolution of polymers, thermal adhesion method, froth flotation method, electrostatic separation methods. It was emphasized that by using state-of-the-art technologies such as electron beam treatment followed by the electrostatic separation of waste mixtures from packaging, it is possible to obtain recycled polymers with high purity (90-97%) at advantageous production costs.

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Section: Froth Flotation Methodsmentioning

confidence: 99%

Technological Considerations Regarding the Mechanical Recycling of Waste from Polyethylene and Polypropylene Packaging

Constantinescu¹,

Boata²,

Ilie³

et al. 2022

Proceedings of the 9th International Conference on Advanced Materials and Systems

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show abstract

“…( 16) obtained from Khurmi and Gupta [33]. (16) where N and T are the speed of the screw shaft in rpm and torque transmitted by the shaft in Nm.…”

Section: Screw Shaftmentioning

confidence: 99%

“…They are cleaned before being shredded into plastic flakes using a shredding machine, the size of which is determined by the intended use of the recycled plastic. The plastic flakes are then melted and molded into new plastic products using an extruder, and the final product is cooled and solidified [16]. The recycled plastic can be used to produce a wide range of items, including packaging materials, containers, and even car parts.…”

Section: Introductionmentioning

confidence: 99%

Design and finite element method based structural analysis of a pet bottles-to-plastic flakes recycling plant

Ojo¹,

Shittu²

2023

Int J Ind Eng Manag

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“…Tall, 2000;Lim et al, 2022 Froth flotation method Froth flotation is a physicochemical separation process based on the differences in surface properties of materials. The principle behind froth flotation is the attachment of the hydrophobic particles to air bubbles to be floated and recovered to the concentrate, while the hydrophilic particles are wetted by water and stay in the liquid phase Kokkılıç et al, 2022 Electrostatic separation…”

Section: Industrial Technologies and Facilities For Mechanical Recycl...mentioning

confidence: 99%

“…Table 1. The main types of polymers used to obtain packaging (Kokkılıç et al, 2022;Azeez, 2019; Polyethylene (PE) is one of the most important polymers used in the production of packaging. In contrast to the large volume of packaging production, PE is one of the postconsumer recycled plastics capitalized in products with low use value.…”

Section: Introductionmentioning

confidence: 99%

Proceedings of the 9th International Conference on Advanced Materials and Systems

2022

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show abstract

Separation of plastic wastes using froth flotation – An overview

Cited by 39 publications

References 278 publications

Technological Considerations Regarding the Mechanical Recycling of Waste from Polyethylene and Polypropylene Packaging

Technological Considerations Regarding the Mechanical Recycling of Waste from Polyethylene and Polypropylene Packaging

Design and finite element method based structural analysis of a pet bottles-to-plastic flakes recycling plant

Proceedings of the 9th International Conference on Advanced Materials and Systems

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