Adsorption of yttrium (Y3+) and concentration of rare earth elements from phosphogypsum using chitin and chitin aerogel
Chitin powder and chitin-aerogel were prepared from shrimp wastes and used to uptake Y3+ from aqueous solutions and concentrate this rare earth element from phosphogypsum (PG). Chitin aerogel displays a specific surface area of 945 m2/g, while chitin powder is 3.6 m2/g, which largely influences its...
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| Veröffentlicht in: | Journal of rare earths 2024-04, Vol.42 (4), p.775-782 |
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| container_title | Journal of rare earths |
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| creator | dos Reis, Glaydson S. Pinto, Diana Lütke, Sabrina F. Lima, Éder C. Silva, Luis F.O. De Brum, Irineu A.S. Dotto, Guilherme L. |
| description | Chitin powder and chitin-aerogel were prepared from shrimp wastes and used to uptake Y3+ from aqueous solutions and concentrate this rare earth element from phosphogypsum (PG). Chitin aerogel displays a specific surface area of 945 m2/g, while chitin powder is 3.6 m2/g, which largely influences its adsorption ability. Regarding the adsorption in synthetic solutions, the effect of pH on Y3+ removal is strong for chitin powder adsorbent. In contrast, no big pH influence was detected for chitin aerogel. Electrostatic interactions and chelation can highlight the proposed mechanism of Y3+ on chitin adsorbents for the powder and aerogel. Furthermore, in addition to these interactions, pore filling/pore diffusion is the main mechanism of Y3+ removal in the chitin aerogel. Chitin aerogel is efficient in concentrating 8 times the Y3+ from PG, a very complex matrix. The complex chitin aerogel-Y3+ can be a secondary source of rare earth elements for other applications.
Scheme for the yttrium (Y3+) adsorption using the chitin-based adsorbents. [Display omitted] |
| doi_str_mv | 10.1016/j.jre.2023.04.008 |
| format | Article |
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| ispartof | Journal of rare earths, 2024-04, Vol.42 (4), p.775-782 |
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| source | ScienceDirect Journals (5 years ago - present); Alma/SFX Local Collection |
| subjects | Chitin porous aerogel Chitin powder Fysikalisk kemi Physical Chemistry Rare earths Sustainable material Yttrium adsorption and recovery |
| title | Adsorption of yttrium (Y3+) and concentration of rare earth elements from phosphogypsum using chitin and chitin aerogel |
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