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Organic Polymer Functional Adsorption Materials

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Polymer Chemistry".

Deadline for manuscript submissions: closed (25 May 2024) | Viewed by 4969

Special Issue Editor


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Guest Editor
College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China
Interests: water and wastewater treatment

Special Issue Information

Dear Colleagues,

The term ‘adsorptive polymer materials’ mainly refers to polymer materials that have selective affinity for specific ions or molecules. In terms of appearance, the most notable materials are microporous, macroporous, popcorn and macroreticular resins. According to the source, they are divided into natural polymer-based adsorption materials and synthetic polymer-based adsorption materials. Natural polymers, such as cellulose, humus, chitosan, and alginate, are environmentally friendly and easy to obtain, have certain adsorption functions and objective processability, and have been used in composite adsorption materials for a long time. Synthetic polymer adsorption materials mostly include water-absorbing resins, chelating resins, adsorption resins, ion-exchange resins, etc. As part of the development of molecular design technology, scholars are studying adsorption materials with higher selectivity, high adsorption capacity and a fast adsorption rate. Porous polymer materials have certain adsorption and support properties, and its unsaturated bond also offers good processing and functionalization, which will greatly improve the adsorption performance of the material. Organic polymer functional adsorption materials play an irreplaceable role in the removal of wastewaters (effluents) from various pollutants (dyes, heavy metals, pharmaceuticals/drugs, and organic molecules (phenols, pesticides, herbicides, etc.)) or the binding/capture of environmental gases (COx, NOx, SOx, etc.).

This Special Issue aims to compile the original and cutting-edge research results of organic polymer functional adsorption materials.

Prof. Dr. Weifang Ma
Guest Editor

Manuscript Submission Information

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Keywords

  • adsorbent
  • organic polymer
  • filter
  • wastewater treatment
  • gas adsorption
  • adsorption performance

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Published Papers (2 papers)

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Research

16 pages, 6702 KiB  
Article
Selective and Effective Gold Recovery from Printed Circuit Boards and Gold Slag Using Amino-Acid-Functionalized Cellulose Microspheres
by Fulai Hao, Jifu Du, Lifang Peng, Manman Zhang, Zhen Dong, Yanbai Shen and Long Zhao
Polymers 2023, 15(2), 321; https://doi.org/10.3390/polym15020321 - 8 Jan 2023
Cited by 9 | Viewed by 1991
Abstract
The hydrometallurgical recovery of gold from electronic waste and gold slag is a hot research topic. To develop a cost-effective and environmentally friendly adsorbent for gold recovery, four types of amino-acid (arginine, histidine, methionine, and cysteine)-functionalized cellulose microspheres were prepared via a radiation [...] Read more.
The hydrometallurgical recovery of gold from electronic waste and gold slag is a hot research topic. To develop a cost-effective and environmentally friendly adsorbent for gold recovery, four types of amino-acid (arginine, histidine, methionine, and cysteine)-functionalized cellulose microspheres were prepared via a radiation technique. The adsorption performance of the amino acid resins toward Au(III) ions was systematically investigated by batch experiments. The amino acid resins could absorb Au(III) ions at a wide pH range. The adsorption process was followed by the pseudo-second-order model and Langmuir model. The theoretical maximum adsorption capacity was calculated as 396.83 mg/g, 769.23 mg/g, 549.45 mg/g, and 636.94 mg/g for ArgR, HisR, MetR, and CysR, respectively. The amino acid resins could effectively and selectively recover trace Au(III) ions from the leaching solutions of printed circuit board and gold slag waste. Lastly, the mechanism underlying amino acid resin’s Au(III) ion recovery capability was investigated by FTIR, XRD, and XPS analyses. This work describes a series of cost-effective gold adsorbents with excellent selectivity and adsorption capacity to boost their practical application. Full article
(This article belongs to the Special Issue Organic Polymer Functional Adsorption Materials)
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23 pages, 6687 KiB  
Article
Removal of Cationic Dyes by Iron Modified Silica/Polyurethane Composite: Kinetic, Isotherm and Thermodynamic Analyses, and Regeneration via Advanced Oxidation Process
by Afiqah Ahmad, Siti Nurul Ain Md. Jamil, Thomas S. Y. Choong, Abdul Halim Abdullah, Nur Hana Faujan, Abel A. Adeyi, Rusli Daik and Nurhanisah Othman
Polymers 2022, 14(24), 5416; https://doi.org/10.3390/polym14245416 - 10 Dec 2022
Cited by 8 | Viewed by 2107
Abstract
Emerging dye pollution from textile industrial effluents is becoming more challenging for researchers worldwide. The contamination of water by dye effluents affects the living organisms in an ecosystem. Methylene blue (MB) and malachite green (MG) are soluble dyes with a high colour intensity [...] Read more.
Emerging dye pollution from textile industrial effluents is becoming more challenging for researchers worldwide. The contamination of water by dye effluents affects the living organisms in an ecosystem. Methylene blue (MB) and malachite green (MG) are soluble dyes with a high colour intensity even at low concentration and are hazardous to living organisms. The adsorption method is used in most wastewater plants for the removal of organic pollutants as it is cost-effective, has a high adsorption capacity, and good mechanical stabilities. In this study, a composite adsorbent was prepared by impregnating iron modified silica (FMS) onto polyurethane (PU) foam to produce an iron modified silica/polyurethane (FMS/PU) composite. The composite adsorbent was utilised in batch adsorption of the cationic dyes MB and MG. The effect of adsorption parameters such as the adsorbent load, pH, initial dye concentration, and contact time were discussed. Adsorption kinetics and isotherm were implemented to understand the adsorption mechanism for both dyes. It was found that the adsorption of MB and MG followed the pseudo-second order model. The Langmuir model showed a better fit than the Freundlich model for the adsorption of MB and MG, indicating that the adsorption occurred via the monolayer adsorption system. The maximum adsorption capacity of the FMS/PU obtained for MB was 31.7 mg/g, while for MG, it was 34.3 mg/g. The thermodynamic study revealed that the adsorption of MB and MG were exothermic and spontaneous at room temperature. In addition, the regeneration of FMS/PU was conducted to investigate the composite efficiency in adsorbing dyes for several cycles. The results showed that the FMS/PU composite could be regenerated up to four times when the regeneration efficiency dropped drastically to less than 20.0%. The impregnation of FMS onto PU foam also minimised the adsorbent loss into the environment. Full article
(This article belongs to the Special Issue Organic Polymer Functional Adsorption Materials)
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