Estimation of hybrid jig separation efficiency using a modified concentration criterion based on apparent densities of plastic particles with attached bubbles

Ito, Mayumi; Saito, Ayumu; Murase, Nana; Phengsaart, Theerayut; Kimura, Shoko; Kitajima, Naho; Takeuchi, Megumi; Tabelin, Carlito Baltazar; Hiroyoshi, Naoki

Estimation of hybrid jig separation efficiency using a modified concentration criterion based on apparent densities of plastic particles with attached bubbles

Ito, Mayumi; Saito, Ayumu; Murase, Nana et al.

Journal of material cycles and waste management, 2020, 22(6), 2071-2080

Permalink : https://hdl.handle.net/2115/83117

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アクセス権	open access
URI	https://hdl.handle.net/2115/83117
タイトル	Estimation of hybrid jig separation efficiency using a modified concentration criterion based on apparent densities of plastic particles with attached bubbles
著者	Ito, Mayumi ; Saito, Ayumu ; Murase, Nana ; Phengsaart, Theerayut ; Kimura, Shoko ; Kitajima, Naho ; Takeuchi, Megumi ; Tabelin, Carlito Baltazar ; Hiroyoshi, Naoki
e-Rad_Researcher 10339690 著者名 Ito, Mayumi
著者名 Saito, Ayumu
著者名 Murase, Nana
著者名 Phengsaart, Theerayut
著者名 Kimura, Shoko
著者名 Kitajima, Naho
著者名 Takeuchi, Megumi
著者名 Tabelin, Carlito Baltazar
e-Rad_Researcher 50250486 著者名 Hiroyoshi, Naoki
言語	英語
キーワード	Recycling
	Jig
	Hybrid jig
	Plastic separation
	Attached-bubble volume
発行日	2020-11
出版者	Springer
収録物名	Journal of material cycles and waste management
巻(号)	22(6)
ページ	2071-2080
抄録	The hybrid jig, which combines the principles of jig separation and flotation, was recently developed to separate mixed-plastics with similar specific gravities (SG) effectively. In this type of jig, air bubbles are introduced during water pulsation to modify the apparent SG (SG(apparent)) of plastics by the attachment of air bubbles to the particles so that the hybrid jig can separate materials having identical SGs if their surface wettabilities are different. Because the change in SG(apparent)-determined by the volume of attached bubbles on the particle surface-is critical for efficient separation in hybrid jigs, a method to estimate this parameter should be developed. In this study, a laser-assisted measurement apparatus was developed to quantify the attached-bubble volume on plastics during water pulsation. Hybrid jig separation was also conducted using three mixtures containing plastics of almost identical SGs: (i) polyvinyl chloride (PVC)/polyethylene terephthalate (PET), (ii) polypropylene with glass fiber (PPGF)/high-impact polystyrene (HIPS), and (iii) cross-linked polyethylene (XLPE)/polyethylene (PE). Finally, to estimate the separation efficiency of hybrid jig, a new index called the apparent concentration criterion (CCapparent) is proposed. The results showed that SG(apparent)and CC(apparent)calculated using the proposed methods could be used to estimate the hybrid jig separation efficiency.
資源タイプ	学術雑誌論文
出版タイプ	Accepted Manuscript
権利情報	This is a post-peer-review, pre-copyedit version of an article published in Metals and Materials International. The final authenticated version is available online at: http://dx.doi.org/10.1007/s10163-020-01090-7
PISSN	1438-4957
関連情報 (isVersionOf)	出版社版DOI https://doi.org/10.1007/s10163-020-01090-7