TY - JOUR
T1 - Construction of ZrO2-CeO2 composite UF membranes for effective PVA recovery from desizing wastewater
AU - Jin, Zhihao
AU - Qiu, Minghui
AU - Wen, Juanjuan
AU - Shen, Yajing
AU - Chen, Xianfu
AU - Fan, Yiqun
N1 - Publisher Copyright:
© 2022 Elsevier B.V.
PY - 2023/2/15
Y1 - 2023/2/15
N2 - Ceramic ultrafiltration membranes play an important role for the PVA recovery from desizing wastewater. In this study, an integrated and thin (approximately 300 nm) ZrO2-CeO2 composite UF membrane was constructed, with a MWCO of 16 kDa and a water permeance of 116 L·m−2·h−1·bar−1. Nano ZrO2 particles were introduced to optimize the particle size distribution of the CeO2 dispersion, therefore improve its compatibility with the intermediate layer. The membrane also exhibited outstanding chemical stability in both acid (pH = 1) and alkali (pH = 14) solutions. In addition, the membrane exhibited excellent PVA separation performance under harsh conditions (operation temperature = 80 °C, and the solution pH = 13), with a nearly 100 % recovery rate of PVA and a stable permeance of 67 L·m−2·h−1·bar−1. Subsequently, the membrane showed outstanding efficiency for chemical cleaning, with the flux recovery ratio reaching 95.1 % under optimized cleaning conditions. Meanwhile, the pore structure and integrity of the membrane layer maintained stable during the whole process. Overall, this study provides a high-performance UF membrane from new material, which exhibits great potential for PVA recovery from desizing wastewater.
AB - Ceramic ultrafiltration membranes play an important role for the PVA recovery from desizing wastewater. In this study, an integrated and thin (approximately 300 nm) ZrO2-CeO2 composite UF membrane was constructed, with a MWCO of 16 kDa and a water permeance of 116 L·m−2·h−1·bar−1. Nano ZrO2 particles were introduced to optimize the particle size distribution of the CeO2 dispersion, therefore improve its compatibility with the intermediate layer. The membrane also exhibited outstanding chemical stability in both acid (pH = 1) and alkali (pH = 14) solutions. In addition, the membrane exhibited excellent PVA separation performance under harsh conditions (operation temperature = 80 °C, and the solution pH = 13), with a nearly 100 % recovery rate of PVA and a stable permeance of 67 L·m−2·h−1·bar−1. Subsequently, the membrane showed outstanding efficiency for chemical cleaning, with the flux recovery ratio reaching 95.1 % under optimized cleaning conditions. Meanwhile, the pore structure and integrity of the membrane layer maintained stable during the whole process. Overall, this study provides a high-performance UF membrane from new material, which exhibits great potential for PVA recovery from desizing wastewater.
KW - CeO
KW - Chemical cleaning
KW - PVA recovery
KW - Ultrafiltration membrane
KW - ZrO
UR - http://www.scopus.com/inward/record.url?scp=85143144417&partnerID=8YFLogxK
U2 - 10.1016/j.seppur.2022.122672
DO - 10.1016/j.seppur.2022.122672
M3 - 文章
AN - SCOPUS:85143144417
SN - 1383-5866
VL - 306
JO - Separation and Purification Technology
JF - Separation and Purification Technology
M1 - 122672
ER -