Removal of dye and heavy metal ion using a novel synthetic polyethersulfone nanofiltration membrane modified by magnetic graphene oxide/metformin hybrid

By Gisya Abdi, A. Alizadeh, S. Zinadini, G. Moradi. 2018

240 citations recorded by the source corpus.

Abstract In this research, active groups of biguanide were grafted to the surface of graphene oxide sheets through covalent functionalization and combined with magnetic nanoparticles to produce a magnetic graphene-based composite (MMGO). Then, the fabricated MMGO hybrid was introduced into the polyethersulfone (PES) polymer through phase inversion induced by immersion precipitation method. The prepared MMGO embedded PES membranes were examined for pure water flux permeability, salt rejection, antifouling, copper removal, and dye retention capability. The effect of MMGO hybrid on the cross-sectional morphology, hydrophilicity, and roughness of the PES membrane was investigated as well. Embedding MMGO hybrid was eventuated in a significant increase in the pure water flux because of changes in surface roughness and hydrophilicity of the membranes. Besides, the copper and dye removal capability of the prepared membranes remarkably raised due to the presence of hydrophilic functional groups on the surface of MMGO hybrid. The fabricated nanofiltration membrane with 0.5 wt% MMGO hybrid had the highest affinity for copper ions removal (92%). Dye rejection of the MMGO embedded PES membranes at different concentrations of MMGO hybrid was almost the same (about 99%) while the value of the bare PES membrane was 91%. Flux reduction of the MMGO embedded PES membranes was lower than that of the bare PES membrane during repeated filtration.

Subfields: Biomedical Engineering, Materials Chemistry, Water Science and Technology

View Paper: https://www.semanticscholar.org/paper/411fc687829d1299156cd9959a2ae3fdbe33196b

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In Biomedical Engineering

1. N. Madima
2. Ajay Kumar Mishra
3. S. Mishra
4. I. Inamuddin

In Materials Chemistry

1. N. Madima
2. Ajay Kumar Mishra
3. S. Mishra
4. I. Inamuddin

In Water Science and Technology

1. N. Madima
2. Ajay Kumar Mishra
3. S. Mishra
4. I. Inamuddin

Citations in the corpus

• Carbon-based nanomaterials for remediation of organic and inorganic pollutants from wastewater. A review (2020, background): “Most of them are non-biodegradable, highly toxic, and carcinogenic in nature (Malik et al. 2016; Talaiekhozani and Rezania 2017; Abdi et al. 2018).”