TY - JOUR
T1 - Antifouling and photocatalytic properties of 2-D Zn/Al layered double hydroxide tailored low-pressure membranes
AU - Mutharasi, Yuvaraj
AU - Kaleekkal, Noel Jacob
AU - Arumugham, Thanigaivelan
AU - Banat, Fawzi
AU - Kapavarapu, MSR Sridhar
N1 - Funding Information:
The authors like to acknowledge the partial financial support by the National Institute of Technology Calicut , India for the student innovative project grant titled “Development of layered double hydroxide incorporated PEI membranes with enhanced photocatalytic and antifouling ability” to Dr. Noel Jacob Kaleekkal.
Publisher Copyright:
© 2020 Elsevier B.V.
PY - 2020/12
Y1 - 2020/12
N2 - In this study, Zinc-Aluminium layered double hydroxide (LDH) was synthesized to fabricate membranes with superior hydrophilic and photocatalytic characteristics. The prepared LDH was extensively characterized and employed for the preparation of polyetherimide mixed matrix ultrafiltration (UF) membranes, which displayed > 96 % BSA rejection and a flux recovery ratio of 88 % even after 3-cycles. M-1 (UF, 1 wt. %) displayed a 94 % degradation of organic dye (methylene blue) in 120 min when irradiated with UV-light. Further, nanofiltration (NF) membranes were prepared by incorporating Zn/Al LDH into the polyamide (PA) layer during the in-situ interfacial polymerization to prepare thin-film nanocomposite membranes. MT-2 (NF, 0.4 wt.% LDH in PA layer) displayed improved hydrophilicity (lower water contact angle), > 94.5 % rejection of cationic dye (Methylene blue), > 91 % rejection of inorganic salt (CaSO4) with an 80 % flux recovery after long-term filtration. The LDH holds an auspicious potential to tune the properties of UF and NF membranes to be used in the treatment of industrial effluents.
AB - In this study, Zinc-Aluminium layered double hydroxide (LDH) was synthesized to fabricate membranes with superior hydrophilic and photocatalytic characteristics. The prepared LDH was extensively characterized and employed for the preparation of polyetherimide mixed matrix ultrafiltration (UF) membranes, which displayed > 96 % BSA rejection and a flux recovery ratio of 88 % even after 3-cycles. M-1 (UF, 1 wt. %) displayed a 94 % degradation of organic dye (methylene blue) in 120 min when irradiated with UV-light. Further, nanofiltration (NF) membranes were prepared by incorporating Zn/Al LDH into the polyamide (PA) layer during the in-situ interfacial polymerization to prepare thin-film nanocomposite membranes. MT-2 (NF, 0.4 wt.% LDH in PA layer) displayed improved hydrophilicity (lower water contact angle), > 94.5 % rejection of cationic dye (Methylene blue), > 91 % rejection of inorganic salt (CaSO4) with an 80 % flux recovery after long-term filtration. The LDH holds an auspicious potential to tune the properties of UF and NF membranes to be used in the treatment of industrial effluents.
KW - Hydrophilicity
KW - Mixed matrix membranes
KW - Photocatal
KW - Thin-film nanocomposite
KW - Ytic activity
KW - Zinc-Aluminium layered double hydroxide
UR - http://www.scopus.com/inward/record.url?scp=85093930852&partnerID=8YFLogxK
U2 - 10.1016/j.cep.2020.108191
DO - 10.1016/j.cep.2020.108191
M3 - Article
AN - SCOPUS:85093930852
SN - 0255-2701
VL - 158
JO - Chemical Engineering and Processing: Process Intensification
JF - Chemical Engineering and Processing: Process Intensification
M1 - 108191
ER -
