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International Journal of Sustainable Engineering Volume 7, 2014 - Issue 4
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Original Articles

Robustness testing of a free-fall triboelectric separation process for plastic waste recovery

Salah-Eddine Bendimerada APELEC Laboratory, Djillali Liabes University of Sidi Bel-Abbes, AlgeriaCorrespondence[email protected]
,
Amar Tilmatinea APELEC Laboratory, Djillali Liabes University of Sidi Bel-Abbes, Algeria
,
Karim Medlesb IRECOM Laboratory, Djillali Liabes University of Sidi Bel-Abbes, Algeria
,
Mohamed Miloudib IRECOM Laboratory, Djillali Liabes University of Sidi Bel-Abbes, Algeria
,
Youssouf Brahamia APELEC Laboratory, Djillali Liabes University of Sidi Bel-Abbes, Algeria
&
Lucien Dascalescub IRECOM Laboratory, Djillali Liabes University of Sidi Bel-Abbes, Algeria;c Institute PPRIME, CNRS – University of Poitiers – ENSMA, IUT, Angoulême, France
Pages 284-292 | Received 25 Jan 2013, Accepted 19 Apr 2013, Published online: 10 Jul 2013

Figures & data

Figure 1 Schematic representation of a free-fall triboelectric separation process.
Figure 1 Schematic representation of a free-fall triboelectric separation process.
Figure 2 Shape and size of the PVC and HDPE particles.
Figure 2 Shape and size of the PVC and HDPE particles.
Figure 3 Experimental bench for triboelectric separation of polymers. 1, Rotating tube; 2, vibratory feeder; 3, command of the feeder; 4, driving motor; 5, DC power supply of the motor; 6, high-voltage electrodes; 7, collector; 8, hygrometer; 9, electronic balance; 10, tachometer; 11, high-voltage power supplies.
Figure 3 Experimental bench for triboelectric separation of polymers. 1, Rotating tube; 2, vibratory feeder; 3, command of the feeder; 4, driving motor; 5, DC power supply of the motor; 6, high-voltage electrodes; 7, collector; 8, hygrometer; 9, electronic balance; 10, tachometer; 11, high-voltage power supplies.

Table 1 Results of experiment 1.1 (n = 170 rpm, α = 5.6°, β = 8.5°).

Table 2 Results of experiment 1.2 (U = ± 30 kV, α = 5.6°, β = 8.5°).

Table 3 Results of experiment 1.3 (U = ± 30 kV, β = 8.5°, n = 170 rpm).

Table 4 Results of experiment 1.4 (U = ± 30 kV, α = 5.6°, n = 170 rpm).

Figure 4 Recovery of PVC and HDPE particles and amount of middling particles as functions of the applied high voltage (n = 170 rpm, α = 5.6°, β = 8.5°).
Figure 4 Recovery of PVC and HDPE particles and amount of middling particles as functions of the applied high voltage (n = 170 rpm, α = 5.6°, β = 8.5°).
Figure 5 Recovery of PVC and HDPE particles and amount of middling particles as functions of the speed of the rotating cylinder (U = ± 30 kV, α = 5.6°, β = 8.5°).
Figure 5 Recovery of PVC and HDPE particles and amount of middling particles as functions of the speed of the rotating cylinder (U = ± 30 kV, α = 5.6°, β = 8.5°).
Figure 6 Recovery of PVC and HDPE particles and amount of middling particles as functions of the slope inclination α of the cylinder (U = ± 30 kV, β = 8.5°, n = 170 rpm).
Figure 6 Recovery of PVC and HDPE particles and amount of middling particles as functions of the slope inclination α of the cylinder (U = ± 30 kV, β = 8.5°, n = 170 rpm).
Figure 7 Recovery of PVC and HDPE particles and amount of middling particles as functions of the angle β of the high-voltage vertical electrodes (U = ± 30 kV, β = 8.5°, n = 170 rpm).
Figure 7 Recovery of PVC and HDPE particles and amount of middling particles as functions of the angle β of the high-voltage vertical electrodes (U = ± 30 kV, β = 8.5°, n = 170 rpm).

Table 5 Results of experiment 2 (set-point identification).

Figure 8 Response contour plots for middling.
Figure 8 Response contour plots for middling.

Table 6 Results of experiment 3 (robustness testing).

Figure 9 Plot of model coefficients of robustness testing.
Figure 9 Plot of model coefficients of robustness testing.

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