Electrochemical decolorization of PET depolymerization waste liquid with Chitosan/Fe3O4 dispersed nano-electrodes

Mengjuan Li; Xiaoqiang Li; Qiang Gao; Yanan Zhu; Yang Lu

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Original Research Articles · 研究論文

Electrochemical decolorization of PET depolymerization waste liquid with Chitosan/Fe3O4 dispersed nano-electrodes

Mengjuan Li ✉ 1 Key Laboratory of Eco-Textiles (Jiangnan University), Ministry of Education, 2College of Textile & Clothing, Jiangnan University, 3Key Laboratory of Food Nutrition and Safety, Ministry of Education, School of Food Engineering and Biotechnology, Tianjin University of Science & Technology
Xiaoqiang Li 1 Key Laboratory of Eco-Textiles (Jiangnan University), Ministry of Education, 2College of Textile & Clothing, Jiangnan University, 3Key Laboratory of Food Nutrition and Safety, Ministry of Education, School of Food Engineering and Biotechnology, Tianjin University of Science & Technology
Qiang Gao 1 Key Laboratory of Eco-Textiles (Jiangnan University), Ministry of Education, 2College of Textile & Clothing, Jiangnan University, 3Key Laboratory of Food Nutrition and Safety, Ministry of Education, School of Food Engineering and Biotechnology, Tianjin University of Science & Technology
Yanan Zhu 1 Key Laboratory of Eco-Textiles (Jiangnan University), Ministry of Education, 2College of Textile & Clothing, Jiangnan University, 3Key Laboratory of Food Nutrition and Safety, Ministry of Education, School of Food Engineering and Biotechnology, Tianjin University of Science & Technology
Yang Lu 1 Key Laboratory of Eco-Textiles (Jiangnan University), Ministry of Education, 2College of Textile & Clothing, Jiangnan University, 3Key Laboratory of Food Nutrition and Safety, Ministry of Education, School of Food Engineering and Biotechnology, Tianjin University of Science & Technology

Abstract

This work aimed at decolorizing PET depolymerization waste liquid (DWL) by electrochemical method. PET fabrics were glycolsized by utilizing excess EG and the glycolsis product was purified through repeated crystallization to get BHET crystal. The waste liquid of the depolymerization process was electrochemical decolored by utilizing chitosan/Fe3O4 nanoparticles as the dispersed electrodes under a 15 V DC voltage. The absorption at 338, 531 and 635 nm which were due to the dyes in DWL decreased with the electrolysis time, while the absorption of EG (322nm) changed slightly. The removal ratio of dyes was described with A/A0 and achieved to 78.94 %. PET fabrics were depolymerized by using the decolorized DWL and mixture of decolorized DWL with EG (1:1 v / v). The maximum yield of BHET was 58% and 72.3%, respectively.

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Issue: Vol. 24 No. 6 (2017)
Section: Original Research Articles
Pages: 337-344
Submitted: 2017-09-02
Published: 2017-09-02
ID: JHGT-17-367
Views: 2
Downloads: 0

引用 How to cite

Li, M., Li, X., Gao, Q., Zhu, Y., & Lu, Y. (2017). Electrochemical decolorization of PET depolymerization waste liquid with Chitosan/Fe3O4 dispersed nano-electrodes. Journal of the Hwa Gang Textile, 24(6), 337-344. https://www.jhgt.org.tw/article/view/297

@article{li2017_297,
  author  = {Li, Mengjuan and Li, Xiaoqiang and Gao, Qiang and Zhu, Yanan and Lu, Yang},
  title   = {Electrochemical decolorization of PET depolymerization waste liquid with Chitosan/Fe3O4 dispersed nano-electrodes},
  journal = {Journal of the Hwa Gang Textile},
  year    = {2017},
  volume  = {24},
  number  = {6},
  pages   = {337--344},
  issn    = {1025-9678},
  url     = {https://www.jhgt.org.tw/article/view/297}
}

TY  - JOUR
AU  - Li, Mengjuan
AU  - Li, Xiaoqiang
AU  - Gao, Qiang
AU  - Zhu, Yanan
AU  - Lu, Yang
TI  - Electrochemical decolorization of PET depolymerization waste liquid with Chitosan/Fe3O4 dispersed nano-electrodes
JO  - Journal of the Hwa Gang Textile
T2  - 華岡紡織期刊
VL  - 24
IS  - 6
PY  - 2017
SP  - 337
EP  - 344
KW  - PET Depolymerization
KW  - Waste Liquid Treatment
KW  - Electrochemical Decolorization
KW  - Dispersed Nano-Electrodes
KW  - Chitosan/Fe3O4 Nanoparticles
SN  - 1025-9678
UR  - https://www.jhgt.org.tw/article/view/297
AB  - This work aimed at decolorizing PET depolymerization waste liquid (DWL) by electrochemical method. PET fabrics were glycolsized by utilizing excess EG and the glycolsis product was purified through repeated crystallization to get BHET crystal. The waste liquid of the depolymerization process was electrochemical decolored by utilizing chitosan/Fe3O4 nanoparticles as the dispersed electrodes under a 15 V DC voltage. The absorption at 338, 531 and 635 nm which were due to the dyes in DWL decreased with the electrolysis time, while the absorption of EG (322nm) changed slightly. The removal ratio of dyes was described with A/A0 and achieved to 78.94 %. PET fabrics were depolymerized by using the decolorized DWL and mixture of decolorized DWL with EG (1:1 v / v). The maximum yield of BHET was 58% and 72.3%, respectively.
ER  -

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