TY - JOUR
T1 - Poly(Homopiperazine-Amide) Thin-Film Composite Membrane for Nanofiltration of Heavy Metal Ions
AU - Ibrahim, Syed
AU - Mohammadi Ghaleni, Mahdi
AU - Isloor, Arun M.
AU - Bavarian, Mona
AU - Nejati, Siamak
N1 - Funding Information:
S.N. appreciates the kind support of Nebraska Environmental Trust (NET) under grant # 18–178. S.I. and A.M.I. thank the Director of NITK Surathkal, India, for his support and encouragement. A.M.I. expresses gratitude to VGST, Department of Science & Technology, and the Government of Karnataka for the Young Scientist and CESEM awards. S.I. is indebted to the Department of Science and Technology (DST) India, University of Nebraska, Indo-US Science and Technology Forum (IUSSTF), and the Daugherty Water for Food Institute (DWFI) for supporting and funding of the WARI internship. The research was performed in part in the Nebraska Nanoscale Facility: National Nanotechnology Coordinated Infrastructure and the Nebraska Center for Materials and Nanoscience, which are supported by the National Science Foundation under Award ECCS: 1542182, and the Nebraska Research Initiative.
PY - 2020/11/10
Y1 - 2020/11/10
N2 - The development of membrane-based technologies for the treatment of wastewater streams and resources containing heavy metal ions is in high demand. Among various technologies, nanofiltration (NF) membranes are attractive choices, and the continuous development of novel materials to improve the state-of-the-art NF membranes is highly desired. Here, we report on the synthesis of poly(homopiperazine-amide) thin-film composite (HTFC)-NF membranes, using homopiperazine (HP) as a monomer. The surface charge, hydrophilicity, morphology, cross-linking density, water permeation, solute rejection, and antifouling properties of the fabricated NF membranes were evaluated. The fabricated HTFC NF membranes demonstrated water permeability of 7.0 ± 0.3 L/(m2 h bar) and rejected Na2SO4, MgSO4, and NaCl with rejection values of 97.0 ± 0.6, 97.4 ± 0.5, and 23.3 ± 0.6%, respectively. The membranes exhibit high rejection values of 98.1 ± 0.3 and 96.3 ± 0.4% for Pb2+ and Cd2+ ions, respectively. The fouling experiment with humic acid followed by cross-flow washing of the membranes indicates that a flux recovery ratio (FRR) of 96.9 ± 0.4% can be obtained.
AB - The development of membrane-based technologies for the treatment of wastewater streams and resources containing heavy metal ions is in high demand. Among various technologies, nanofiltration (NF) membranes are attractive choices, and the continuous development of novel materials to improve the state-of-the-art NF membranes is highly desired. Here, we report on the synthesis of poly(homopiperazine-amide) thin-film composite (HTFC)-NF membranes, using homopiperazine (HP) as a monomer. The surface charge, hydrophilicity, morphology, cross-linking density, water permeation, solute rejection, and antifouling properties of the fabricated NF membranes were evaluated. The fabricated HTFC NF membranes demonstrated water permeability of 7.0 ± 0.3 L/(m2 h bar) and rejected Na2SO4, MgSO4, and NaCl with rejection values of 97.0 ± 0.6, 97.4 ± 0.5, and 23.3 ± 0.6%, respectively. The membranes exhibit high rejection values of 98.1 ± 0.3 and 96.3 ± 0.4% for Pb2+ and Cd2+ ions, respectively. The fouling experiment with humic acid followed by cross-flow washing of the membranes indicates that a flux recovery ratio (FRR) of 96.9 ± 0.4% can be obtained.
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U2 - 10.1021/acsomega.0c04064
DO - 10.1021/acsomega.0c04064
M3 - Article
C2 - 33195928
AN - SCOPUS:85096014830
VL - 5
SP - 28749
EP - 28759
JO - ACS Omega
JF - ACS Omega
SN - 2470-1343
IS - 44
ER -