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| Content Provider | Springer Nature Link |
|---|---|
| Author | Al Lafi, Abdul G. Al Abdullah, Jamal Alnama, Tasneem Amin, Yusr |
| Copyright Year | 2016 |
| Abstract | An adsorbent composite based on waste polyethylene and manganese dioxide was synthesized, characterized and its capacity to remove Pb$^{2+}$ from solutions was investigated. Chemical activation of PE bags was achieved by the reaction with potassium permanganate. This was to increase their susceptibility toward photo-degradation and thermal degradation by the introduction of functional groups, such as hydroxyl and carboxyl groups, as evident from the new IR bands appeared at 3400, 1710, and 1630 cm$^{−1}$. Further, the composite was fabricated by thermal or chemical dissociation of potassium permanganate, and its structure was confirmed by FTIR, XRD and SEM. Nano-structure manganese dioxide in the amorphous phase was identified. The adsorption results confirmed that the prepared adsorbent can effectively remove Pb$^{2+}$ ions from aqueous solutions, with a maximum adsorption capacity of 50.5 mg g$^{−1}$. Both intra-particle diffusion and film diffusion contribute to the rate-determining step in the adsorption process. The composite can be regenerated using HCl solution (0.5 mol L$^{−1}$) with Pb$^{2+}$ recovery percentage reached 95 %. After serving as a promising absorbent for Pb$^{2+}$, manganese oxide can be removed by hydrolysis with acid (6.0 M HCl) and the polymer with enhanced susceptibility toward degradation can be disposed off. |
| Starting Page | 391 |
| Ending Page | 401 |
| Page Count | 11 |
| File Format | |
| ISSN | 15662543 |
| Journal | Journal of Polymers and the Environment |
| Volume Number | 25 |
| Issue Number | 2 |
| e-ISSN | 15728900 |
| Language | English |
| Publisher | Springer US |
| Publisher Date | 2016-08-19 |
| Publisher Place | New York |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Polyethylene waste Manganese oxide Lead ions Adsorption Composite Chemical recycling Polymer Sciences Environmental Chemistry Materials Science Environmental Engineering/Biotechnology Industrial Chemistry/Chemical Engineering |
| Content Type | Text |
| Resource Type | Article |
| Subject | Materials Chemistry Environmental Engineering Polymers and Plastics |
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