Processing plastics from ASR/ESR waste: separation of poly vinyl chloride (PVC) by froth flotation after microwave-assisted surface modification

  • Srinivasa Reddy Mallampati
  • Chi-Hyeon Lee
  • Min Hee Park
  • Byeong-Kyu Lee
ORIGINAL ARTICLE
  • 184 Downloads

Abstract

The feasibility of the selective surface hydrophilization of poly vinyl chloride (PVC) using microwave treatment to facilitate the separation of PVC via froth flotation from automobile shredder residue (ASR) and electronic waste shredder residue (ESR) was evaluated. In the presence of powder-activated carbon (PAC), 60-s microwave treatment selectively enhanced the hydrophilicity of the PVC surface (i.e., the PVC contact angle decreased from 86.8° to 69.9°). The scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS) results are consistent with increased hydrophilic functional groups (i.e., ether, hydroxyl, and carboxyl), amounting to significant changes in the morphology and roughness of the PVC surface after treatment. After only 60 s of microwave treatment, 20 % of the PVC was separated in virgin and ASR/ESR plastics with 33 and 29 % purity, respectively, as settled fractions by froth flotation at a 150 rpm mixing speed. The microwave treatment with the addition of PAC had a synergetic effect with the froth flotation, which brought about 100 and 90 % selective separation of PVC from the other virgin and ASR/ESR plastics, with 91 and 82 % purity. The use of the combined froth flotation and microwave treatments is an effective technology for separating PVC from hazardous waste plastics.

Keywords

Hydrophilic PVC ASR ESR Microwave treatment Froth floatation Waste plastics 

Notes

Acknowledgments

This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF), funded by the Ministry of Education (2014R1A1A2055487).

References

  1. 1.
    Sakai SI, Yoshida H, Hiratsuka J, Vandecasteele C, Kohlmeyer R, Rotter VS, Passarini F, Santini A, Peeler M, Li J, Oh GJ, Chi NK, Bastian L, Moore S, Kajiwara N, Takigami H, Itai T, Takahashi S, Tanabe S, Tomoda K, Hirakawa T, Hirai Y, Asari M, Yano J (2014) An international comparative study of end-of-life vehicle (ELV) recycling systems. J Mater Cycles Waste Manag 16:1–20CrossRefGoogle Scholar
  2. 2.
  3. 3.
  4. 4.
    Kim IS (2004) E-waste issues and measures in Korea. In: Proceedings of the third workshop on material cycles and waste management in Asia (NIES E-waste Workshop), 14–15 December, NIES, Tsukuba, JapanGoogle Scholar
  5. 5.
    Zevenhoven R, Sayeed L (2003) Automotive shredder residue (ASR) and compact disc (CD): waste: options for recovery of materials and energy. TKK Eny 14, EspooGoogle Scholar
  6. 6.
    Jang YC (2010) Waste electrical and electronic equipment (WEEE) management in Korea: generation, collection, recycling systems. J Mater Cycles Waste Manag 12:283–294CrossRefGoogle Scholar
  7. 7.
    Korea Ministry of Environment (Korea MOE) (2007) The act on the resource recycling of waste electrical electronic equipment (WEEE) and end-of-life vehicles (ELVs). The Ministry, GwacheonGoogle Scholar
  8. 8.
    Martinho G, Pires A, Saraiva L, Ribeiro R (2012) Composition of plastics from waste electrical and electronic equipment (WEEE) by direct sampling. Waste Manag 32:1213–1217CrossRefGoogle Scholar
  9. 9.
    Schlummer M, Gruber L, Maurer A, Wolz G, Eldik RV (2007) Characterisation of polymer fractions from waste electrical and electronic equipment (WEEE) and implications for waste management. Chemosphere 67:1866–1876CrossRefGoogle Scholar
  10. 10.
    Dimitrakakis E, Janz A, Bilitewski B, Gidarakos E (2009) Small WEEE: determining recyclables and hazardous substances in plastics. J Hazard Mater 161:913–919CrossRefGoogle Scholar
  11. 11.
    Wagenaar H, Langeland K, Hardman R, Sergeant Y, Brenner K, Sandra P, Rappe C, Fernandes A, Tiernan T (1998) Analysis of PCDDs and PCDFs in virgin suspension PVC resin. Chemosphere 36:1–12CrossRefGoogle Scholar
  12. 12.
    Greenpeace International (2010) Why BFRs and PVC should be phased out of electronic devicesGoogle Scholar
  13. 13.
    Reddy MS, Okuda T, Kurose K, Tsai T-Y, Nakai S, Nishijima W, Okada M (2010) Surface ozonation of polyvinyl chloride for its separation from waste plastic mixture by froth flotation. J Mater Cycles Waste 12:326–331CrossRefGoogle Scholar
  14. 14.
    Kangal MO (2010) Selective flotation technique for separation of PET and HDPE used in drinking water bottles. Min Proc Ext Met Rev 31:214–223CrossRefGoogle Scholar
  15. 15.
    Inculet II, Castle GSP, Brown JD (1998) Electrostatic separation of plastics for recycling. Particul Sci Technol 16:91–100CrossRefGoogle Scholar
  16. 16.
    Park CH, Jeon HS, Yu HS, Han OH, Park JK (2008) Application of electrostatic separation to the recycling of plastic wastes: separation of PVC, PET, and ABS. Environ Sci Technol 42:249–255CrossRefGoogle Scholar
  17. 17.
    Pongstabodee S, Kunachitpimol N, Damronglerd S (2008) Combination of three-stage sink–float method and selective flotation technique for separation of mixed post-consumer plastic waste. Waste Manag 28:475–483CrossRefGoogle Scholar
  18. 18.
    Pascoe RD (2006) Investigation of hydrocyclones for the separation of shredded fridge plastics. Waste Manag 26:1126–1132CrossRefGoogle Scholar
  19. 19.
    Krummenacher B, Peuch P, Fisher M, Biddle M (1998) Automatic identification and sorting of plastics from different waste streams—a status report, APMEGoogle Scholar
  20. 20.
    Wang C, Wang H, Liu Q, Fu J, Liu Y (2014) Separation of polycarbonate and acrylonitrile–butadiene–styrene waste plastics by froth flotation combined with ammonia pretreatment. Waste Manag 34:2656–2661CrossRefGoogle Scholar
  21. 21.
    Pascoe RD, O’Connell B (2003) Flame treatment for the selective wetting and separation of PVC and PET. Waste Manag 23:845–850CrossRefGoogle Scholar
  22. 22.
    Wang CQ, Wang H, Wu BX, Liu Q (2014) Boiling treatment of ABS and PS plastics for flotation separation. Waste Manag 34:1206–1210CrossRefGoogle Scholar
  23. 23.
    Reddy MS, Kurose K, Okuda T, Nishijima W, Okada M (2007) Separation of polyvinyl chloride (PVC) from automobile shredder residue (ASR) by froth flotation with ozonation. J Hazard Mater 147:1051–1055CrossRefGoogle Scholar
  24. 24.
    Wang C, Wang H, Liu Y (2015) Separation of polyethylene terephthalate from municipal waste plastics by froth flotation for recycling industry. Waste Manag 35:42–47CrossRefGoogle Scholar
  25. 25.
    Jones DA, Lelyveld TP, Mavrofidis SD, Kingman SW, Miles NJ (2002) Microwave heating applications in environmental engineering—a review. Resour Conserv Recycl 34:75–90CrossRefGoogle Scholar
  26. 26.
    Ito M, Ushida K, Nakao N, Kikuchi N, Nozaki R, Asai K, Washio M (2006) Dechlorination of poly (vinyl chloride) by microwave irradiation I: a simple examination using a commercial microwave oven. Polym Degrad Stab 91:1694–1700CrossRefGoogle Scholar
  27. 27.
    Moriwaki S, Machida M, Tatsumoto H, Otsubo Y, Aikawa M, Ogura T (2006) Dehydrochlorination of poly(vinyl chloride) by microwave irradiation. Appl Therm Eng 26:745–750CrossRefGoogle Scholar
  28. 28.
    Haviriliak S, Haviriliak SJ, Mark JE (eds) (1999) Physical properties of polymers handbook. Chapter 36. American Institute of Physics, New York, p 489Google Scholar
  29. 29.
    Steeman PAM, Turnhout JJ, Salamone JC (eds) (1996) Polymeric materials encyclopedia. CRC Press, Boca Raton, p 7026Google Scholar
  30. 30.
    Bacalogulu R, Fish MH, Kaufhold J, Sander HJ, Zweifel H (eds) (2001) Plastics additives handbook. Chapter 3. Hanser Gardner Publications, Cincinnati, p 427Google Scholar
  31. 31.
    Achilias C, Roupakias P, Megalokonomos AA, Lappas EVA (2007) Chemical recycling of plastic wastes made from polyethylene (LDPE and HDPE) and polypropylene (PP). J Hazard Mater 149:536–542CrossRefGoogle Scholar
  32. 32.
    Gaboury SR, Urban MW (1991) Spectroscopic evidence for Si–H formation during microwave plasma modification of poly(dimethylsiloxane) elastomer surfaces. Polym Commun 32:390–392Google Scholar
  33. 33.
    Gaboury SR, Urban MW (1992) Quantitative analysis of the Si–H groups formed on poly(dimethylsiloxane) surfaces: an ATR FTi.r. approach. Polymer 33:5085–5089CrossRefGoogle Scholar
  34. 34.
    Abbasi M, Salarirad MM, Ghasemi I (2010) Selective separation of PVC from PET/PVC mixture using floatation by tannic acid depressant. Iran Polym J 19:483–489Google Scholar
  35. 35.
    Kunkel JP, Urban MW (1993) Surface and interfacial FT–IR spectroscopic studies of latexes. VIII. The effect of particle and copolymer composition on surfactant exudation in styrene-n-butyl acrylate copolymer latex films. J Appl Polym Sci 50:1217–1223CrossRefGoogle Scholar
  36. 36.
    Menéndez JA, Arenillas A, Fidalgo B, Fernández Y, Zubizarreta L, Calvo EG, Bermúdez JM (2010) Microwave heating processes involving carbon materials. Fuel Process Technol 91:1–8CrossRefGoogle Scholar
  37. 37.
    Reddy MS, Kurose K, Okuda T, Nishijima W, Okada M (2008) Selective recovery of PVC-free polymers from ASR polymers by ozonation and froth flotation. Resour Conserv Recycl 52:941–946CrossRefGoogle Scholar
  38. 38.
    Gaboury SR, Urban MW (1994) Quantitative attenuated total reflectance Fourier transform infrared analysis of microwave plasma reacted silicone elastomer surfaces. Langmuir 10:2289–2293CrossRefGoogle Scholar
  39. 39.
    Marques GA, Tenorio JAS (2000) Use of froth flotation to separate PVC/PET mixtures. Waste Manag 20:265–269CrossRefGoogle Scholar
  40. 40.
    Okuda T, Kurose K, Nishijima W, Okada M (2007) Separation of polyvinyl chloride from plastic mixture by froth flotation after surface modification with ozone. Ozone Sci Eng 29:373–377CrossRefGoogle Scholar
  41. 41.
    Kurose K, Okuda T, Nakai S, Tsai T-Y, Nishijima W, Okada M (2008) Hydrophilization of polyvinyl chloride surface by ozonation. Surf Rev Lett 15:711–715CrossRefGoogle Scholar
  42. 42.
    Bigot S, Louarn G, Kébir N, Burel F (2013) Facile grafting of bioactive cellulose derivativesonto PVC surfaces. Appl Surf Sci 283:411–416CrossRefGoogle Scholar
  43. 43.
    Kojio K, Kugumia S, Uchiba Y, Nishino Y, Furukaw M (2009) The microphase-separated structure of polyurethane bulk and thin films. Polym J 41:118–124CrossRefGoogle Scholar

Copyright information

© Springer Japan 2016

Authors and Affiliations

  • Srinivasa Reddy Mallampati
    • 1
  • Chi-Hyeon Lee
    • 1
  • Min Hee Park
    • 1
  • Byeong-Kyu Lee
    • 1
  1. 1.Department of Civil and Environmental EngineeringUniversity of UlsanUlsanRepublic of Korea

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