Robust Design of Electrostatic Separation Processes

Dascalescu, Lucien; Samuilă, A.; Mihalcioiu, A.; Bente, Silviu; Tilmatine, Amar

doi:10.1109/tia.2005.847308

Cited by 45 publications

(24 citation statements)

References 11 publications

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“…The mass of middling products is only 3.7 g (mean) and decreases 73% and 59% compared with groups 1 and 2, respectively. In general, this is always used as a criterion to estimate the performance of the separation process [8,14]. The recovery of metals is 28.7 g (mean), increases 34% and 22% compared with groups 1 and 2, respectively.…”

Section: Discussionmentioning

confidence: 99%

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Electrostatic separation for multi-size granule of crushed printed circuit board waste using two-roll separator

2008

Journal of Hazardous Materials

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Section: Discussionmentioning

confidence: 99%

“…However, it still faces some problems about robustness. It is sensitive to some noise factors, such as the material characteristics, the granule size and the ambient condition and leads to a low efficiency eventually [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Electrostatic separation for multi-size granule of crushed printed circuit board waste using two-roll separator

2008

Journal of Hazardous Materials

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“…Electrostatic separation is nowadays the subject of further research, especially on its optimization using different mathematical methods [13][14][15][16][17][18].…”

Section: State Of the Artmentioning

confidence: 99%

Plastic wastes recovery using electrostatic forces

Tilmatine¹,

Bendimerad²

2009

Front. Electr. Electron. Eng. China

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Among the separation techniques used in industry, the triboelectric separation of insulating particles using rotary tube is an efficient technology employed in waste recovery and mineral industries. This process, also called free-fall triboelectric separation, is widely used for the sorting and the purification of granular materials resulting from industrial plastic wastes. This paper aims at the achievement of a comprehensive description of a laboratory triboelectric separator built up by the authors and its utilization for an experimental study carried out on granular samples containing particles of polyvinyl chloride (PVC) and polyethylene (PE). Thus, among the variable factors of the process, we analyzed the influence of the most important ones, i.e., the rotational speed of the cylinder n (rpm), the applied high voltage U (kV), the charging time of the particles t (s), the mass of the sample m (g), and the composition percentage of the sample C p (%).

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“…voltage level and rotating speed, were defined as system factor due to the possibility of improving system performance significantly. On the other hand, environmental conditions, characteristic variation of samples, and any source of natural occurrences were considered random factors [14]. We propose to having a robust design to reduce the variations of the process conditions caused by the random factor.…”

Section: Introductionmentioning

confidence: 99%

“…The mixtures of granules that fall to the middle tank are classified as middling product (M) and used as an indicator of recovery efficiency. In the robust design, voltage level and roller rotation speed were defined as system factors [14], whereas the water content and size of biowaste granules were selected as random factors. Water content in biowaste decides its conductivity and likelihood to be moved to the right-most tank.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Electrostatic Separation Process for Maximizing Biowaste Recovery Using Taguchi Method and ANOVA

Lai¹,

Lim²,

Teh³

2015

Pol. J. Environ. Stud.

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Municipal solid waste (MSW) is generally disposed of at landfills, and is highly attributed to its simplest and cheapest disposal procedures if compared to other approaches such as incineration [1]. Landfills bring negative impact to the environment due to leachate and biogas emission for biowaste [2]. A high amount of biowaste, particularly food waste, can be found in municipal waste. Approximately 45% of municipal solid wastes are organic food waste, followed by inorganic wastes such as plastics and glass [3]. A comprehensive study of food segregation is thus crucial. Segregation of food from waste results in a reduction of organic decomposition arising in a landfill and thus cuts down the generation of leachate. On one hand, the amount of landfill leachate could be lessened with the rare existence of organic matters. On the other hand, the segregated organic substances can be processed independently for methane gas generation, i.e. a green energy for biogas production [4]. Moreover, incineration of these inorganicfree substances produces less residue and toxic gas.Electrostatic separation provides an effective approach to recovering the reusable matter from solid wastes. It has been widely employed in applications involving the dry separation process, e.g. to recover conductors from non-conducting mixtures [5]. The separation process with a roll-type electrostatic separator sorts the charged bodies from the uncharged under an intensive electric field. It serves as an environmentally friendly way for recycling and reusing the resources without negatively impacting the surroundings [6].Pol. J. Environ. Stud. Vol. 24, No. 3 (2015), [1125][1126][1127][1128][1129][1130][1131] Original Research Optimization of Electrostatic Separation AbstractIn this study, the electrostatic separation process was employed to recover biowaste from waste mixtures. The recovered biowaste is a potential source of alternative renewable energy (e.g. biomass energy). Taguchi's methodology of experimental design was used for a robust design of both system and random factors. Robust design attempts to analyze the influence of respective factors towards the separation process and, meanwhile, limits the negative impact of the hard-to-control random factors. The effects of four factors, namely voltage level, rotation speed, water content, and particle size diameter were determined. It was noticeable that voltage level has a maximum effect (39.44%) on effective recovery of biowaste, followed by size diameter, water content, and rotation speed within design range. On the other hand, the minimal middling product was mostly influenced by the voltage level (79.78%). The water content has a negligible effect (0.78 %) if compared to rotation speed and size diameter. This paper concluded the appropriate operational range to have less error from the variations of noise.

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Robust Design of Electrostatic Separation Processes

Cited by 45 publications

References 11 publications

Electrostatic separation for multi-size granule of crushed printed circuit board waste using two-roll separator

Electrostatic separation for multi-size granule of crushed printed circuit board waste using two-roll separator

Plastic wastes recovery using electrostatic forces

Optimization of Electrostatic Separation Process for Maximizing Biowaste Recovery Using Taguchi Method and ANOVA

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