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Kwon, Young-Nam
Superior Membrane-based Advanced Research & Technology (SMART) Lab
Research Interests
  • Membrane, Reverse(Forward) osmosis, Membrane distillation, Hydrate-induced ice desalination

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Hollow-fiber mixed-matrix membrane impregnated with glutaraldehyde-crosslinked polyethyleneimine for the removal of lead from aqueous solutions

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Title
Hollow-fiber mixed-matrix membrane impregnated with glutaraldehyde-crosslinked polyethyleneimine for the removal of lead from aqueous solutions
Author
Kim, DaheeLim, Da-SeulLee, Hye-JinKim, In-ChulKwon, Young-NamMyung, Suwan
Issue Date
2022-12
Publisher
Elsevier BV
Citation
JOURNAL OF MEMBRANE SCIENCE, v.663, pp.121031
Abstract
Removing heavy-metal ions from wastewater is essential for public health and natural resource management. In this study, we developed an adsorptive hollow-fiber mixed-matrix membrane (MMM) composed of polyethersulfone (PES), as the polymer matrix, and glutaraldehyde-crosslinked (GA-crosslinked) polyethyleneimine (PEI), as the adsorbent, for removing Pb2+. The effect of the impregnated GA-crosslinked PEI on the structural and chemical properties of the membrane was investigated. The introduction of the adsorbent resulted in a sponge-like structure of the membrane and imparted it with hydrophilic properties. Furthermore, it resulted in a positively charged membrane surface at most pH values. Dynamic adsorption–desorption experiments were conducted to evaluate Pb2+-adsorption efficiency. The GA-crosslinked PEI membrane presented a high adsorption capacity (7.81 mg/g) and desorption efficiency (92.8%) in the first cycle. Furthermore, it showed excellent reusability, with no significant change in Pb2+-desorption efficiency (approximately 92%) even after three usage cycles. This study demonstrated the applicability of hollow-fiber MMMs impregnated with GA-crosslinked PEI for the efficient removal of Pb2+.
URI
https://scholarworks.unist.ac.kr/handle/201301/59580
DOI
10.1016/j.memsci.2022.121031
ISSN
0376-7388
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