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Selective Removal of Iron, Lead, and Copper Metal Ions from Industrial Wastewater by a Novel Cross-Linked Carbazole-Piperazine Copolymer
| Content Provider | MDPI |
|---|---|
| Author | Anazi, Majed Al Abdulazeez, Ismail Hamouz, Othman Charles S. Al |
| Copyright Year | 2022 |
| Description | A novel cross-linked Copolymer (MXM) was synthesized by the polycondensation reaction of 3,6-Diaminocarbazole and piperazine with p-formaldehyde as a cross-linker. The Copolymer was fully characterized by solid$ ^{13}$C-NMR and FT-IR. The thermal stability of MXM was investigated by TGA and showed that the Copolymer was stable up to 300 °C. The synthesized polyamine was tested for the removal of iron $(Fe^{2+}$), lead $(Pb^{2+}$), and copper $(Cu^{2+}$) ions from aqueous and industrial wastewater solutions. The effect of pH, concentration and time on the adsorption of iron $(Fe^{2+}$), lead $(Pb^{2+}$), and copper $(Cu^{2+}$) ions was investigated. The adsorption of the studied ions from aqueous solutions onto the MXM polymer occurs following the Freundlich isotherm and pseudo-second-order kinetic models. The intraparticle diffusion model showed that the adsorption mechanism is controlled by film diffusion. The regeneration of MXM showed practical reusability with a loss in capacity of 2–5% in the case of $Fe^{2+}$ and $Cu^{2+}$ ions. The molecular simulation investigations revealed similarities between experimental and theoretical calculations. Industrial wastewater treatment revealed the excellent capabilities and design of MXM to be a potential adsorbent for the removal of heavy metal ions. |
| Starting Page | 2486 |
| e-ISSN | 20734360 |
| DOI | 10.3390/polym14122486 |
| Journal | Polymers |
| Issue Number | 12 |
| Volume Number | 14 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2022-06-18 |
| Access Restriction | Open |
| Subject Keyword | Polymers Water Science and Technology Polyamine Industrial Wastewater Treatment Heavy Metal Ions |
| Content Type | Text |
| Resource Type | Article |
