ID | 34202 |
FullText URL | |
Author |
Brebu, Mihai
Bhaskar, Thallada
Muto, Akinori
Sakata, Yusaku
|
Abstract | A method to recover both Br and Br-free plastic from brominated flame retardant high impact polystyrene (HIPS-Br) was proposed. HIPS-Br containing 15% Br was treated in autoclave at 280℃ using water or KOH solution of various amounts and concentrations. Hydrothermal treatment (30 ml water) leads to 90% debromination of 1 g HIPS-Br but plastic is strongly degraded and could not be recovered. previous termAlkalinenext term hydrothermal treatment (45 ml or 60 ml KOH 1 M) showed similar debromination for up to 12 g HIPS-Br and plastic was recovered as pellets with molecular weight distribution close to that of the initial material. Debromination occurs at melt plastic/KOH solution interface when liquid/vapour equilibrium is attained inside autoclave (280℃ and 7 MPa in our experimental conditions) and depends on the plastic amount/KOH volume ratio. The antimony oxide synergist from HIPS-Br remains in recovered plastic during treatment. A pictorial imagination of the proposed debromination process is presented. |
Keywords | Debromination
Alkaline hydrotreatment
HIPS-Br
Bromine recovery
|
Note | Digital Object Identifer: 10.1016/j.chemosphere.2006.02.036
Published with permission from the copyright holder. This is the author's copy, as published in Chemosphere, August 2006, Volume 64, Issue 6, Pages 1021-1025. Publisher URL:http://dx.doi.org/10.1016/j.chemosphere.2006.02.036 Direct access to Thomson Web of Science Copyright © 2006 Elsevier Ltd. All rights reserved. |
Published Date | 2006-08
|
Publication Title |
Chemosphere
|
Volume | volume64
|
Issue | issue6
|
Publisher | Pergamon-Elsevier Science Ltd
|
Start Page | 1021
|
End Page | 1025
|
ISSN | 0045-6535
|
NCID | AA00603442
|
Content Type |
Journal Article
|
language |
English
|
Copyright Holders | Elsevier Ltd.
|
File Version | author
|
Refereed |
True
|
DOI | |
Web of Science KeyUT | |
Submission Path | environmental_sciences_general/1
|