TY - JOUR
T1 - A high-flux phytic acid functionalized SiO2 blend polysulfone ultrafiltration membrane for extraction of uranium from seawater
AU - Sun, Haowen
AU - Liu, Qi
AU - Liu, Jingyuan
AU - Zhu, Jiahui
AU - Yu, Jing
AU - Chen, Rongrong
AU - Li, Rumin
AU - Wang, Jun
N1 - Publisher Copyright:
© 2024 Elsevier Ltd
PY - 2024/10
Y1 - 2024/10
N2 - Uranium is a strategic resource which is found in quantities of 4.5 billion tons in seawater. For exacting U(VI) efficiently from seawater, this study involves the preparation of a polysulfone (PSF)-based phytic acid-silica blended membrane (PA-SiO2/PSF) through the incorporation of silicon dioxide particles (SiO2) and phytic acid (PA) into the polysulfone ultrafiltration membrane. A large number of adsorption sites was contributed by PA, serving as the primary factor in enhancing the U(VI) adsorption performance of PSF. Meanwhile, silica can be used as a carrier of PA to improve the performance of PSF. The addition of hydrophilic SiO2 and PA increases the water flux (380 L·h−1·m−2) and hydrophilicity (contact angle = 61.8°) of PSF. The modified PSF demonstrates a negative potential under neutral pH conditions. Notably, at pH = 7, PA-SiO2/PSF exhibits the highest adsorption performance (qe = 1052.01 mg/m2) and selectivity (Kd = 16161.96 mL/m2) for U(VI), with an 82 % recovery ratio of U(VI) achieved after five adsorption-desorption cycles. Moreover, the dynamic adsorption effect of PA-SiO2/PSF surpasses that of static adsorption. Therefore, this study presents a straightforward method of modifying polysulfone membranes, with potential applicability in uranium adsorption from seawater.
AB - Uranium is a strategic resource which is found in quantities of 4.5 billion tons in seawater. For exacting U(VI) efficiently from seawater, this study involves the preparation of a polysulfone (PSF)-based phytic acid-silica blended membrane (PA-SiO2/PSF) through the incorporation of silicon dioxide particles (SiO2) and phytic acid (PA) into the polysulfone ultrafiltration membrane. A large number of adsorption sites was contributed by PA, serving as the primary factor in enhancing the U(VI) adsorption performance of PSF. Meanwhile, silica can be used as a carrier of PA to improve the performance of PSF. The addition of hydrophilic SiO2 and PA increases the water flux (380 L·h−1·m−2) and hydrophilicity (contact angle = 61.8°) of PSF. The modified PSF demonstrates a negative potential under neutral pH conditions. Notably, at pH = 7, PA-SiO2/PSF exhibits the highest adsorption performance (qe = 1052.01 mg/m2) and selectivity (Kd = 16161.96 mL/m2) for U(VI), with an 82 % recovery ratio of U(VI) achieved after five adsorption-desorption cycles. Moreover, the dynamic adsorption effect of PA-SiO2/PSF surpasses that of static adsorption. Therefore, this study presents a straightforward method of modifying polysulfone membranes, with potential applicability in uranium adsorption from seawater.
KW - Dynamic adsorption
KW - Phytic acid
KW - Polysulfone blended membrane
KW - Uranium extraction from seawater
UR - http://www.scopus.com/inward/record.url?scp=85201427102&partnerID=8YFLogxK
U2 - 10.1016/j.jece.2024.113749
DO - 10.1016/j.jece.2024.113749
M3 - Article
AN - SCOPUS:85201427102
SN - 2213-2929
VL - 12
JO - Journal of Environmental Chemical Engineering
JF - Journal of Environmental Chemical Engineering
IS - 5
M1 - 113749
ER -