Tribo-charging properties of waste plastic granules in process of tribo-electrostatic separation

Li, Jia; Wu, Guiqing; Xu, Zhenming

doi:10.1016/j.wasman.2014.10.001

Cited by 88 publications

(24 citation statements)

References 18 publications

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“…Through the triboelectrostatic method, nonmetal particles like plastics in PCBs recuperated from WEEE can be separated. PVC and rubber can be recovered from scrap cables using a simple and inexpensive triboelectrostatic technique in which these materials are deviated into the positive/negative electrode [116,117].…”

Section: Triboelectrostatic Separationmentioning

confidence: 99%

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Advanced Recovery Techniques for Waste Materials from IT and Telecommunication Equipment Printed Circuit Boards

2019

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Waste from information technology (IT) and telecommunication equipment (WITTE) constitutes a significant fraction of waste from electrical and electronic equipment (WEEE). The presence of rare metals and hazardous materials (e.g., heavy metals or flame retardants) makes the necessary recycling procedures difficult and expensive. Important efforts are being made for Waste Printed Circuit Board (WPCB) recycling because, even if they only amount to 5-10% of the WITTE weight, they constitute up to 80% of the recovered value. This paper summarizes the recycling techniques applicable to WPCBs. In the first part, dismantling and mechanical recycling techniques are presented. Within the frame of electro-mechanical separation technology, the chain process of shredding, washing, and sieving, followed by one or a combination of magnetic, eddy current, corona electrostatic, triboelectrostatic, or gravity separation techniques, is presented. The chemical and electrochemical processes are of utmost importance for the fine separation of metals coming from complex equipment such as WPCBs. Thermal recycling techniques such as pyrolysis and thermal treatment are presented as complementary solutions for achieving both an extra separation stage and thermal energy. As the recycling processes of WPCBs require adequate, efficient, and ecological recycling techniques, the aim of this survey is to identify and highlight the most important ones. Due to the high economic value of the resulting raw materials relative to the WPCBs' weight and composition, their recycling represents both a necessary environmental protection action, as well as an economic opportunity.

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Section: Triboelectrostatic Separationmentioning

confidence: 99%

“…Studies show that parameters such as particle size and relative humidity affect waste plastic granules ' charging properties. The triboelectrostatic technique also applies to polymers, like high-impact polystyrene and acrylonitrile butadiene styrene, that are identified most commonly in PCBs waste [117,118].…”

Section: Triboelectrostatic Separationmentioning

confidence: 99%

Advanced Recovery Techniques for Waste Materials from IT and Telecommunication Equipment Printed Circuit Boards

2019

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“…The electrostatic sorting, or the electrostatic separation, has become a subject of many studies. The results obtained so far prove usability, small environmental pollution load, and economic effectiveness of that method, utilized in mechanical recycling of the waste that contains commonly used polymers [5][6][7].…”

Section: Separacja Elektrostatyczna Dwuskładnikowych Mieszanin Wybranmentioning

confidence: 61%

Electrostatic separation of binary mixtures of some biodegradable polymers and poly(vinyl chloride) or poly(ethylene terephthalate)

et al. 2016

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There are presented results of investigation of electrostatic separation of binary mixtures containing a biodegradable polymer {polylactide (PLA), polycaprolactone (PCL), or poly(3-hydroxybutyrate-co-4-hydroxybutyrate) [P(3,4HB)]} and a commonly used polymer [poly(vinyl chloride) (PVC) or poly(ethylene terephthalate) (PET)]. It was found that the binary mixtures of these polymers could be efficiently separated. The electrostatic separation process of the P(3,4HB)/PET mixture appeared to be most successful. It is indicated that the share of a biodegradable component in the mixture essentially influences the separation effects. Therefore, suitable choice of necessary conditions is needed to perform the separation process, which includes appropriate separator settings, depending on fractions of individual components in the mixture being separated.

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“…Most systems are based on vibration [186][187][188], rotating drums or mixers [112,113,140,[189][190][191], cyclones [186,192,193], fluidized beds [194], crushers [195], or just by passing a particle stream over a tilted surface [117,132,196].…”

Section: Triboelectric Charging Devicesmentioning

confidence: 99%

Electrostatic Separation

Dötterl

Wachsmuth

Waldmann

et al. 2016

Ullmann's Encyclopedia of Industrial Chemistry

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Tribo-charging properties of waste plastic granules in process of tribo-electrostatic separation

Cited by 88 publications

References 18 publications

Advanced Recovery Techniques for Waste Materials from IT and Telecommunication Equipment Printed Circuit Boards

Advanced Recovery Techniques for Waste Materials from IT and Telecommunication Equipment Printed Circuit Boards

Electrostatic separation of binary mixtures of some biodegradable polymers and poly(vinyl chloride) or poly(ethylene terephthalate)

Electrostatic Separation

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