High-Value Oil–Water Separation Materials Prepared from Waste Polyethylene Terephthalate

Author:

Zhou Changjian1ORCID,Zhang Jiahao1,Fu Yuqing1,Wu Maowan1,Zhang Heng1,Shi Qingle2,Dai Yong1,Zhao He1

Affiliation:

1. School of Chemistry and Chemical Engineering, Yancheng Institute of Technology, Yancheng 224051, China

2. Sunlour Pigment Co., Ltd., Xinghua 225431, China

Abstract

As one of the most common forms of waste, waste PET is a serious pollutant in natural and human living environments. There is an urgent need to recycle PET. For this study, the complete degradation of PET was realized at a low temperature. A lipophilic hydrophobic membrane was formed on the surface of a stainless steel mesh (SSM) using a simple dip coating method, and an oil–water separation material was successfully prepared. After loading with degradation products, the surface roughness of SSM increased from 19.09 μm to 62.33 μm. The surface changed from hydrophilic to hydrophobic, and the water contact angle increased to 123°. The oil–water separation flux of the modified SSM was 9825 L/(m2·h), and the separation efficiency was 98.99%. The modified SSM had good reuse performance. This hydrophobic modification method can also be used to modify other porous substrates, such as activated carbon, filter paper, foam, and other materials. The porous substrate modified by the degradation product of waste PET was used to prepare oil–water separation materials, not only solving the problem of white pollution but also reducing the dependence on non-renewable resources in the conventional methods used for the preparation of oil–water separation materials. This study provides new raw materials and methods for the industrial production of oil–water separation materials, which have important application prospects.

Funder

2023 Jiangsu Degree and Postgraduate Education Teaching Reform project

2023 Jiangsu Graduate Research and Practice Innovation plan

Funding for School-Level Research Projects of the Yancheng Institute of Technology

Publisher

MDPI AG

Subject

Chemistry (miscellaneous),Analytical Chemistry,Organic Chemistry,Physical and Theoretical Chemistry,Molecular Medicine,Drug Discovery,Pharmaceutical Science

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