Startseite The effect of surface modification of PMMA/chitosan composites on improving adsorption properties for chelating Pb2+
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The effect of surface modification of PMMA/chitosan composites on improving adsorption properties for chelating Pb2+

  • Xin Dai , Xiaohang Zhang EMAIL logo , Zhenxi Wang , Sheng Xu , Shangxi Zhang , Meng Cao und Xinde Jiang
Veröffentlicht/Copyright: 27. Juni 2019
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Abstract

As lead-containing products, such as lead batteries, are widely used, water pollution problems caused by Pb2+ show a significant threat to the ecosystem and human health. To overcome this serious problem, the modified poly(methyl methacrylate) (PMMA)/chitosan (CS) composites were prepared by adding CS into the PMMA matrix as functional filler and surface modification. The structure, thermal stability, size, morphology and adsorption properties of the modified PMMA/CS composites were characterized by Fourier transform infrared spectroscopy, thermogravimetric analysis, scanning electron microscopy, and inductively coupled plasma optical atomic emission spectrometry. The results indicated that the modified PMMA/CS composites had a uniform size of about 1 μm and showed quite good thermal stability. In addition, the Pb2+ removal of the modified PMMA/CS composite reached up to 98% when the initial Pb2+ concentrations are under 100 mg l−1. The results of the adsorption isotherms indicated that the Langmuir isotherm fits best to the experimental data when compared with the Freundlich isotherm and Temkin isotherm. All these results demonstrate that modified PMMA/CS has a good adsorption property and can be a promising adsorbent for chelating Pb2+.

Award Identifier / Grant number: GJJ151095 and GJJ171016

Award Identifier / Grant number: 21706113 and 21702090

Funding statement: The authors are grateful for the financial support from the Jiangxi Provincial Department of Education Natural Science Foundation of China (GJJ151095 and GJJ171016), and the National Natural Science Foundation of China (21706113 and 21702090, Funder Id: http://dx.doi.org/10.13039/501100001809).

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Received: 2019-01-25
Accepted: 2019-05-08
Published Online: 2019-06-27
Published in Print: 2019-07-26

©2019 Walter de Gruyter GmbH, Berlin/Boston

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