Top

Journal of Material Cycles and Waste Management

Published in:

03-07-2019 | ORIGINAL ARTICLE

Improvement of hybrid jig separation efficiency using wetting agents for the recycling of mixed-plastic wastes

Authors: Mayumi Ito, Megumi Takeuchi, Ayumu Saito, Nana Murase, Theerayut Phengsaart, Carlito Baltazar Tabelin, Naoki Hiroyoshi, Masami Tsunekawa

Published in: Journal of Material Cycles and Waste Management | Issue 6/2019

Activate our intelligent search to find suitable subject content or patents.

search-config

AI-assisted search

Off

Abstract

We have developed the hybrid jig which combines the principles of jig separation and flotation. However, the selectivity of bubble attachment in water was poor because most plastics have inherently hydrophobic surfaces; so, development of surface modification techniques for plastic particles would expand the application of hybrid jig to the material recycling of plastics. In this study, hybrid jig separation of polypropylene using glass fiber and high impact polystyrene having similar specific gravities and surface wettability were investigated with three wetting agents [Di-2-ethylhexyl sodium sulfosuccinate (Aerosol OT, AOT), sodium lignin sulfonate, and tannic acid]. The results showed that the probability of bubble attachment was influenced by wetting agents because of their strong effects on the surface tension of solution and surface wettability of plastics. The results also suggest that wetting agents could be utilized to control the selectivity of bubble attachment and improve the hybrid jig separation efficiency. In addition, since the hybrid jig separation of polyvinyl chloride and polyamide (nylon-66) using AOT was imperfect, a two-step approach, composed of a pre-wetting step (first step) in a solution containing the wetting agent (AOT) and hybrid jig separation in water (second step), is proposed.

previous article Utilization of waste from steel and iron industry as replacement of cement in mortars

next article Rapid simultaneous recovery and purification of calcium and molybdenum from calcium molybdate-based crystal waste

Dont have a licence yet? Then find out more about our products and how to get one now:

Springer Professional "Wirtschaft+Technik"

Online-Abonnement

Mit Springer Professional "Wirtschaft+Technik" erhalten Sie Zugriff auf:

über 102.000 Bücher
über 537 Zeitschriften

aus folgenden Fachgebieten:

Automobil + Motoren
Bauwesen + Immobilien
Business IT + Informatik
Elektrotechnik + Elektronik
Energie + Nachhaltigkeit
Finance + Banking
Management + Führung
Marketing + Vertrieb
Maschinenbau + Werkstoffe
Versicherung + Risiko

Jetzt Wissensvorsprung sichern!

inform now

Springer Professional "Technik"

Online-Abonnement

Mit Springer Professional "Technik" erhalten Sie Zugriff auf:

über 67.000 Bücher
über 390 Zeitschriften

aus folgenden Fachgebieten:

Automobil + Motoren
Bauwesen + Immobilien
Business IT + Informatik
Elektrotechnik + Elektronik
Energie + Nachhaltigkeit
Maschinenbau + Werkstoffe

Jetzt Wissensvorsprung sichern!

inform now

Statista (2019) Global plastic production from 1950 to 2017 (in million metric tons). https://www.statista.com/statistics/282732/global-production-of-plastics-since-1950. Accessed 15 Apr 2018

PlasticsEurope (2018) Plastics—the facts 2018. An analysis of European plastics production, demand and waste data. https://www.plasticseurope.org/application/files/6315/4510/9658/Plastics_the_facts_2018_AF_web.pdf. Accessed 22 Apr 2019

Tsunekawa M, Naoi B, Ogawa S, Hori K, Hiroyoshi N, Ito M, Hirajima T (2005) Jig separation of plastics from scrapped copy machines. Int J Miner Process 76:67–74. https://doi.org/10.1016/j.minpro.2004.12.001 CrossRef

Hori K, Tsunekawa M, Hiroyoshi N, Ito M (2009) Optimum water pulsation of jig separation for crushed plastic particles. Int J Miner Process 92:103–108. https://doi.org/10.1016/j.minpro.2009.01.001 CrossRef

Hori K, Tsunekawa M, Ueda M, Hiroyoshi N, Ito M, Okada H (2009) Development of a new gravity separator for plastics—a Hybrid-jig. Mater Trans 50:2844–2847. https://doi.org/10.2320/matertrans.M-M2009825 CrossRef

Ito M, Tsunekawa M, Ishida E, Kawai K, Takahashi T, Abe N, Hiroyoshi N (2010) Reverse jig separation of shredded floating plastic-separation of polypropylene and high density polyethylene. Int J Miner Process 97:96–99. https://doi.org/10.1016/j.minpro.2010.08.007 CrossRef

Kuwayama Y, Ito M, Hiroyoshi N, Tsunekawa M (2011) Jig separation of crushed automobile shredded residue and its evaluation by float and sink analysis. J Mater Cycles Waste Manag 13:240–246. https://doi.org/10.1007/s10163-011-0008-y CrossRef

Tsunekawa M, Kobayashi R, Hori K, Okada H, Abe N, Hiroyoshi N, Ito M (2012) Newly developed discharge device for jig separation of plastics to recover higher grade bottom layer product. Int J Miner Process 114–117:27–29. https://doi.org/10.1016/j.minpro.2012.09.003 CrossRef

Phengsaart T, Ito M, Hamaya N, Tabelin CB, Hiroyoshi N (2018) Improvement of jig efficiency by shape separation, and a novel method to estimate the separation efficiency of metal wires in crushed electronic wastes using bending behavior and “entanglement factor”. Miner Eng 129:54–62. https://doi.org/10.1016/j.mineng.2018.09.015 CrossRef

10.

Pita F, Castilho A (2016) Influence of shape and size of the particles on jigging separation of plastics mixture. Waste Manag 48:89–94. https://doi.org/10.1016/j.wasman.2015.10.034 CrossRef

11.

Ferrara G, Bevilacqua P, Lorenzi L, Zanin M (2000) The influence of particle shape on the dynamic dense medium separation of plastics. Int J Miner Process 59:225–235. https://doi.org/10.1016/S0301-7516(99)00078-2 CrossRef

12.

Pongstabodee S, Kunachitpimol B, Damronglerd S (2008) Combination of three-stage sink-float method and selective flotation technique for separation of mixed post-consumer plastic waste. Waste Manag 28:475–483. https://doi.org/10.1016/j.wasman.2007.03.005 CrossRef

13.

Richard GM, Mario M, Javier T, Susana T (2011) Optimization of the recovery of plastics for recycling by density media separation cyclones. Resour Conserv Recycl 55:472–482. https://doi.org/10.1016/j.resconrec.2010.12.010 CrossRef

14.

Dodbiba G, Shibayama A, Sadaki J, Fujita T (2003) Combination of triboelectrostatic separation and air tabling for sorting plastics from a multicomponent plastic mixture. Mater Trans 44:2427–2435. https://doi.org/10.2320/matertrans.44.2427 CrossRef

15.

Dodbiba G, Sadaki J, Okaya K, Shibayama A, Fujita T (2005) The use of air tabling and triboelectric separation for separating a mixture of three plastics. Miner Eng 18:1350–1360. https://doi.org/10.1016/j.mineng.2005.02.015 CrossRef

16.

Gente V, Marca FL, Lucci F, Massacci P (2003) Electrical separation of plastics coming from special waste. Waste Manag 23:951–958. https://doi.org/10.1016/S0956-053X(03)00088-6 CrossRef

17.

Shent H, Pugh RJ, Forssbergc E (1999) A review of plastics waste recycling and the flotation of plastics. Resour Conserv Recycl 25:85–109. https://doi.org/10.1016/S0921-3449(98)00017-2 CrossRef

18.

Fraunholcz N (2004) Separation of waste plastics by froth flotation—a review, part I. Miner Eng 17:261–268. https://doi.org/10.1016/j.mineng.2003.10.028 CrossRef

19.

Wang C, Wang H, Fu J, Liu Y (2015) Flotation separation of waste plastics for recycling—a review. Waste Manag 41:28–38. https://doi.org/10.1016/j.wasman.2015.03.027 CrossRef

20.

Güney A, Özdilek C, Kangal MO, Burat F (2015) Flotation characterization of PET and PVC in the presence of different plasticizers. Sep Purif Technol 151:47–56. https://doi.org/10.1016/j.seppur.2015.07.027 CrossRef

21.

Burat F, Güney A, Kangal MO (2009) Selective separation of virgin and post-consumer polymers (PET and PVC) by flotation method. Waste Manag 29:1807–1813. https://doi.org/10.1016/j.wasman.2008.12.018 CrossRef

22.

Shibata J, Matsumoto S, Yamamoto H, Lusaka E, Pradip (1996) Flotation separation of plastics using selective depressants. Int J Miner Process 48:127–134. https://doi.org/10.1016/S0301-7516(96)00021-X CrossRef

23.

Marques GA, Tenório JAS (2000) Use of froth flotation to separate PVC/PET mixtures. Waste Manag 20:265–269. https://doi.org/10.1016/S0956-053X(99)00333-5 CrossRef

24.

Saisinchai S (2013) Separation of PVC from PET/PVC mixtures using flotation by calcium lignosulfonate depressant. Eng J 18:45–54. https://doi.org/10.4186/ej.2014.18.1.45 CrossRef

25.

Wang H, Wang C, Fu J, Gu G (2014) Flotability and flotation separation of polymer materials modulated by wetting agents. Waste Manag 34:309–315. https://doi.org/10.1016/j.wasman.2013.11.007 CrossRef

26.

Pita F, Castilho A (2017) Separation of plastics by froth flotation. The role of size, shape and density of the particles. Waste Manag 60:91–99. https://doi.org/10.1016/j.wasman.2016.07.041 CrossRef

27.

Takoungsakdakun T, Pongstabodee S (2007) Separation of mixed post-consumer PET–POM–PVC plastic waste using selective flotation. Sep Purif Technol 54:248–252. https://doi.org/10.1016/j.seppur.2006.09.011 CrossRef

28.

Dodbiba G, Haruki N, Shibayama A, Miyazaki T, Fujita T (2002) Combination of sink–float separation and flotation technique for purification of shredded PET-bottle from PE or PP flakes. Int J Miner Process 65:11–29. https://doi.org/10.1016/S0301-7516(01)00056-4 CrossRef

29.

Jeon S, Ito M, Tabelin CB, Pongsumrankul R, Kitajima N, Hiroyoshi N (2018) Gold recovery from shredder light fraction of E-waste recycling plant by flotation-ammonium thiosulfate leaching. Waste Manag 77:195–202. https://doi.org/10.1016/j.wasman.2018.04.039 CrossRef

30.

Wills BA, Napier-Munn TJ (2006) Mineral processing technology, 7th edn. Pergamon Press, Oxford

31.

Brozek M, Surowiak A (2007) Effect of particle shape on jig separation efficiency. Physicochem Probl Miner Process 41:397–413

32.

Beunder EM (2000) Influence of shape on particle behaviour in recycling techniques. Dissertation, Delft University of Technology

33.

Boylu F, Cinku K, Cetinel T, Karakas F, Guven O, Karaagaclioglu IE, Celik MS (2015) Effect of coal moisture on the treatment of a lignitic coal through a semi-pilot-scale pneumatic stratification jig. Int J Coal Prep Util 35:143–153. https://doi.org/10.1080/19392699.2015.1005743 CrossRef

34.

Butt HJ, Graf K, Kappl M (2003) Physics and chemistry of interfaces, 1st edn. Wiley, WeinheimCrossRef

35.

Firouzi M, Nguyen AV, Hashemabadi SH (2011) The effect of microhydrodynamics on bubble-particle collision interaction. Miner Eng 24:973–986. https://doi.org/10.1016/j.mineng.2011.04.005 CrossRef

36.

Zhao Y, Li YP, Huang J, Liu J, Wang WK (2015) Rebound and attachment involving single bubble and particle in the separation of plastics by froth flotation. Sep Purif Technol 144:123–132. https://doi.org/10.1016/j.seppur.2015.02.016 CrossRef

Title: Improvement of hybrid jig separation efficiency using wetting agents for the recycling of mixed-plastic wastes
Authors: Mayumi Ito
Megumi Takeuchi
Ayumu Saito
Nana Murase
Theerayut Phengsaart
Carlito Baltazar Tabelin
Naoki Hiroyoshi
Masami Tsunekawa
Publication date: 03-07-2019
Publisher: Springer Japan
Published in: Journal of Material Cycles and Waste Management / Issue 6/2019
Print ISSN: 1438-4957
Electronic ISSN: 1611-8227
DOI: https://doi.org/10.1007/s10163-019-00890-w

Springer Professional

Abstract

Please log in to get access to your license.

Dont have a licence yet? Then find out more about our products and how to get one now:

Springer Professional "Wirtschaft+Technik"

Springer Professional "Technik"

Other articles of this Issue 6/2019

Performance evaluation of green-concrete pavement material containing selected C&D waste and FA in cold regions

Current status and behavior modeling on household solid-waste separation: a case study in Da Nang city, Vietnam

Kinetics study of the methane production from experimental recycled pulp and paper sludge by CSTR technology

The potentials of landfill gas production: a review on municipal solid waste management in Indonesia

Optimizing acid leaching of copper from the wastewater treatment sludge of a printed circuit board industry using factorial experimental design

Anaerobic co-digestion of municipal solid wastes with giant reed under mesophilic conditions