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- Title
Hydrous ferric oxide nanoparticles hosted porous polyethersulfone adsorptive membrane: chromium (VI) adsorptive studies and its applicability for water/wastewater treatment.
- Authors
Abdullah, Norfadhilatuladha; Yusof, Norhaniza; Abu Shah, Muhammad Hafiz; Wan Ikhsan, Syarifah Nazirah; Ng, Zhi-Chien; Maji, Subrata; Lau, Woei Jye; Jaafar, Juhana; Ismail, Ahmad Fauzi; Ariga, Katsuhiko
- Abstract
In this present study, adsorptive membranes for Cr(VI) ion removal were prepared by blending polyethersulfone (PES) with hydrous ferric oxide (HFO) nanoparticles (NPs). The effects of HFO NPs to PES weight ratio (0–1.5) on the physicochemical properties of the resultant HFO/PES adsorptive membranes were investigated with respect to the surface chemistry and roughness as well as structural morphologies using different analytical instruments. The adsorptive performance of the HFO NPs/PES membranes was studied via batch adsorption experiments under various conditions by varying solution pH, initial concentration of Cr(VI), and contact time. The results showed that the membrane made of HFO/PES at a weight ratio of 1.0 exhibited the highest adsorption capacity which is 13.5 mg/g. Isotherm and kinetic studies revealed that the mechanism is best fitted to the Langmuir model and pseudo-second-order model. For filtration of Cr(VI), the best promising membranes showed improved water flux (629.3 L/m2 h) with Cr(VI) ion removal of 75%. More importantly, the newly developed membrane maintained the Cr(VI) concentration below the maximum contamination level (MCL) for up to 9 h.
- Subjects
FERRIC oxide; WATER filtration; WASTEWATER treatment; CHROMIUM; SURFACE chemistry; ADSORPTION capacity
- Publication
Environmental Science & Pollution Research, 2019, Vol 26, Issue 20, p20386
- ISSN
0944-1344
- Publication type
Article
- DOI
10.1007/s11356-019-05208-9