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Surface micro-alcoholysis treatment : a novel approach towards froth flotation based separation for binary mixtures of polyethylene terephthalate and polyvinyl chloride

It is known that selective separation is the prerequisite of recycling pathways for waste plastics, which brings the potential economic and environmental benefits for cleaner production. A novel approach, surface micro-alcoholysis treatment (SMAT), was proposed for improvement of froth flotation tow...

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Main Authors: Zhao, Yue, Mishra, Puranjan, Han, Fengrong, Liu, Xinni, Shen, Zhou
Format: Article
Language:English
Published: Elsevier 2019
Subjects:
TP Chemical technology
TS Manufactures
Online Access:http://umpir.ump.edu.my/id/eprint/25425/1/Surface%20micro-alcoholysis%20treatment%20_%20a%20novel%20approach%20towards%20froth%20.pdf
http://umpir.ump.edu.my/id/eprint/25425/
https://doi.org/10.1016/j.jclepro.2019.06.031
https://doi.org/10.1016/j.jclepro.2019.06.031
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spelling my.ump.umpir.254252019-10-15T03:42:03Z http://umpir.ump.edu.my/id/eprint/25425/ Surface micro-alcoholysis treatment : a novel approach towards froth flotation based separation for binary mixtures of polyethylene terephthalate and polyvinyl chloride Zhao, Yue Mishra, Puranjan Han, Fengrong Liu, Xinni Shen, Zhou TP Chemical technology TS Manufactures It is known that selective separation is the prerequisite of recycling pathways for waste plastics, which brings the potential economic and environmental benefits for cleaner production. A novel approach, surface micro-alcoholysis treatment (SMAT), was proposed for improvement of froth flotation towards the separation of plastics. By means of the SMAT, binary mixtures of polyethylene terephthalate (PET) and polyvinyl chloride (PVC) were selective modified to achieve effective separation. The mechanism of SMAT was examined by multiple characterization tests, response surface methodology was employed for its statistical optimization and simulation of pilot plant was first applied. The results suggested that selective wetting could be achieved through SMAT. PET surface was partially replaced by hydrophilic oligomers after ester exchange reaction, leading to the final flotation separation. Based on Plackett-Bueman design, zinc acetate concentration, temperature and operating time were identified as the significant factors controlled in SMAT. The maximum validation separation purity of PET could even reach 99.25% under the optimal condition predicated by Box-Behnken design. Such condition was performed in detail as the mass volume ratio of 1:5 (poly mixtures: 2-ethylhexanol), 0.3 wt% addition of zinc acetate, temperature of 346.5 K, stirring intensity of 100 rpm and operating time of 84.13 min. The PET purity was verified to be steady around 95% in simulation of pilot plant. The proposed technology is efficient, reliable in operation, widespread of application and potential of industrialization. Elsevier 2019-06-04 Article PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/25425/1/Surface%20micro-alcoholysis%20treatment%20_%20a%20novel%20approach%20towards%20froth%20.pdf Zhao, Yue and Mishra, Puranjan and Han, Fengrong and Liu, Xinni and Shen, Zhou (2019) Surface micro-alcoholysis treatment : a novel approach towards froth flotation based separation for binary mixtures of polyethylene terephthalate and polyvinyl chloride. Journal of Cleaner Production, 232. pp. 848-857. ISSN 0959-6526 (print), 1879-1786 (online) https://doi.org/10.1016/j.jclepro.2019.06.031 https://doi.org/10.1016/j.jclepro.2019.06.031
institution Universiti Malaysia Pahang
building UMP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Pahang
content_source UMP Institutional Repository
url_provider http://umpir.ump.edu.my/
language English
topic TP Chemical technology
TS Manufactures
spellingShingle TP Chemical technology
TS Manufactures
Zhao, Yue
Mishra, Puranjan
Han, Fengrong
Liu, Xinni
Shen, Zhou
Surface micro-alcoholysis treatment : a novel approach towards froth flotation based separation for binary mixtures of polyethylene terephthalate and polyvinyl chloride
description It is known that selective separation is the prerequisite of recycling pathways for waste plastics, which brings the potential economic and environmental benefits for cleaner production. A novel approach, surface micro-alcoholysis treatment (SMAT), was proposed for improvement of froth flotation towards the separation of plastics. By means of the SMAT, binary mixtures of polyethylene terephthalate (PET) and polyvinyl chloride (PVC) were selective modified to achieve effective separation. The mechanism of SMAT was examined by multiple characterization tests, response surface methodology was employed for its statistical optimization and simulation of pilot plant was first applied. The results suggested that selective wetting could be achieved through SMAT. PET surface was partially replaced by hydrophilic oligomers after ester exchange reaction, leading to the final flotation separation. Based on Plackett-Bueman design, zinc acetate concentration, temperature and operating time were identified as the significant factors controlled in SMAT. The maximum validation separation purity of PET could even reach 99.25% under the optimal condition predicated by Box-Behnken design. Such condition was performed in detail as the mass volume ratio of 1:5 (poly mixtures: 2-ethylhexanol), 0.3 wt% addition of zinc acetate, temperature of 346.5 K, stirring intensity of 100 rpm and operating time of 84.13 min. The PET purity was verified to be steady around 95% in simulation of pilot plant. The proposed technology is efficient, reliable in operation, widespread of application and potential of industrialization.
format Article
author Zhao, Yue
Mishra, Puranjan
Han, Fengrong
Liu, Xinni
Shen, Zhou
author_facet Zhao, Yue
Mishra, Puranjan
Han, Fengrong
Liu, Xinni
Shen, Zhou
author_sort Zhao, Yue
title Surface micro-alcoholysis treatment : a novel approach towards froth flotation based separation for binary mixtures of polyethylene terephthalate and polyvinyl chloride
title_short Surface micro-alcoholysis treatment : a novel approach towards froth flotation based separation for binary mixtures of polyethylene terephthalate and polyvinyl chloride
title_full Surface micro-alcoholysis treatment : a novel approach towards froth flotation based separation for binary mixtures of polyethylene terephthalate and polyvinyl chloride
title_fullStr Surface micro-alcoholysis treatment : a novel approach towards froth flotation based separation for binary mixtures of polyethylene terephthalate and polyvinyl chloride
title_full_unstemmed Surface micro-alcoholysis treatment : a novel approach towards froth flotation based separation for binary mixtures of polyethylene terephthalate and polyvinyl chloride
title_sort surface micro-alcoholysis treatment : a novel approach towards froth flotation based separation for binary mixtures of polyethylene terephthalate and polyvinyl chloride
publisher Elsevier
publishDate 2019
url http://umpir.ump.edu.my/id/eprint/25425/1/Surface%20micro-alcoholysis%20treatment%20_%20a%20novel%20approach%20towards%20froth%20.pdf
http://umpir.ump.edu.my/id/eprint/25425/
https://doi.org/10.1016/j.jclepro.2019.06.031
https://doi.org/10.1016/j.jclepro.2019.06.031
_version_ 1648741197961756672
score 13.211869

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