Abdullah, N. and Gohari, R. J. and Yusof, N. and Ismail, Ahmad Fauzi and Juhana, J. and Lau, W. J. and Matsuura, T. (2016) Polysulfone/hydrous ferric oxide ultrafiltration mixed matrix membrane: preparation, characterization and its adsorptive removal of lead (II) from aqueous solution. Chemical Engineering Journal, 289 . pp. 28-37. ISSN 1385-8947
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Abstract
In this work, polysulfone (PSf)/hydrous ferric oxide nanoparticles (HFO NPs) ultrafiltration mixed matrix membranes (MMMs) were prepared for adsorptive removal of lead (Pb) (II) from aqueous solution. The morphologies and physiochemical properties of prepared HFO NPs and MMMs were characterized using TEM, BET, XRD, FTIR, SEM, AFM, pure water flux analysis, contact angle measurement and membrane porosity analysis. The results revealed that the self-synthesized HFO NPs possessed a specific surface area (SSA) of 233.49m2/g. Increasing weight ratio of HFO NPs in PSf membranes significantly enhanced membrane pure water flux from 229.5 L/m2h to 942.1 L/m2h, attributed by the improved membrane hydrophilicity (contact angle 8.0°) coupled with greater surface roughness (74.8nm) and overall porosity (88.8%). Adsorption study showed that removal of Pb(II) was strongly dependent on pH in which the optimum pH was 6.5-7.0. Membrane M-1.5 (mass ratio of 1.5 HFO NPs:PSf) possessed the highest adsorption capacity of Pb(II) which was 13.2mg/g. The adsorption mechanism of Pb(II) onto PSf/HFO MMMs was best fitted to Langmuir isotherm whereas the kinetic mechanism was best described by pseudo-second order model. The UF filtration study showed that this adsorptive MMMs produced permeate of high quality with Pb(II) content (<15μg/L). The recovery of 96% demonstrated by the MMMs confirmed the superior potential of dual-function membrane for heavy metals removal.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Contact angle, Heavy metals, Iron oxides, Isotherms, Lead, Membranes, Metal recovery, Porosity, Solutions, Surface roughness, Ultrafiltration, Ferric oxide nanoparticle, Heavy metals removals, Hydrous ferric oxides, Membrane hydrophilicity, Mixed matrix membranes, Physio-chemical properties, Pseudo-second order model, Specific surface area (SSA), Adsorption |
| Subjects: | T Technology > TP Chemical technology |
| Divisions: | Chemical Engineering |
| ID Code: | 72719 |
| Deposited By: | Siti Nor Hashidah Zakaria |
| Deposited On: | 27 Nov 2017 05:05 |
| Last Modified: | 27 Nov 2017 05:05 |
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