TY - JOUR
T1 - Adsorption of yttrium (Y3+) and concentration of rare earth elements from phosphogypsum using chitin and chitin aerogel
AU - Simoes dos Reis, Glaydson
AU - Pinto, Diana
AU - Lütke, Sabrina F.
AU - Lima, Éder C.
AU - Silva, Luis F.O.
AU - De Brum, Irineu A.S.
AU - Dotto, Guilherme L.
PY - 2024/4/1
Y1 - 2024/4/1
N2 - Chitin powder and chitin-aerogel were prepared from shrimp wastes and used to uptake Y
3+ from aqueous solutions and concentrate this rare earth element from phosphogypsum (PG). Chitin aerogel displays a specific surface area of 945 m
2/g, while chitin powder is 3.6 m
2/g, which largely influences its adsorption ability. Regarding the adsorption in synthetic solutions, the effect of pH on Y
3+ 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 Y
3+ on chitin adsorbents for the powder and aerogel. Furthermore, in addition to these interactions, pore filling/pore diffusion is the main mechanism of Y
3+ removal in the chitin aerogel. Chitin aerogel is efficient in concentrating 8 times the Y
3+ from PG, a very complex matrix. The complex chitin aerogel-Y
3+ can be a secondary source of rare earth elements for other applications.
AB - Chitin powder and chitin-aerogel were prepared from shrimp wastes and used to uptake Y
3+ from aqueous solutions and concentrate this rare earth element from phosphogypsum (PG). Chitin aerogel displays a specific surface area of 945 m
2/g, while chitin powder is 3.6 m
2/g, which largely influences its adsorption ability. Regarding the adsorption in synthetic solutions, the effect of pH on Y
3+ 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 Y
3+ on chitin adsorbents for the powder and aerogel. Furthermore, in addition to these interactions, pore filling/pore diffusion is the main mechanism of Y
3+ removal in the chitin aerogel. Chitin aerogel is efficient in concentrating 8 times the Y
3+ from PG, a very complex matrix. The complex chitin aerogel-Y
3+ can be a secondary source of rare earth elements for other applications.
UR - https://publons.com/wos-op/publon/57973502/
U2 - 10.1016/J.JRE.2023.04.008
DO - 10.1016/J.JRE.2023.04.008
M3 - Article
SN - 1002-0721
VL - 42
SP - 775
EP - 782
JO - Journal of Rare Earths
JF - Journal of Rare Earths
IS - 4
ER -