Magnetic adsorption separation (MAS) process: An alternative method of extracting Cr(VI) from aqueous solution using polypyrrole coated Fe 3 O 4 nanocomposites

Muliwa, Anthony M.; Leswifi, Taile Y.; Onyango, Maurice S.; Maity, Arjun

doi:10.1016/j.seppur.2015.12.021

Cited by 70 publications

(30 citation statements)

References 48 publications

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“…The chemistry between adsorbents and analyte properties must be considered to ensure a good adsorbent–adsorbate interaction. C18‐bonded silica , magnetite , and zeolite are some of the commonly used adsorbents that offer diverse properties for the extraction of different kinds of analytes in many applications such as biomedical field , food analysis , etc. .…”

Section: Application Of Organic–inorganic Hybrid‐based Adsorbents In mentioning

confidence: 99%

Advances in organic–inorganic hybrid sorbents for the extraction of organic and inorganic pollutants in different types of food and environmental samples

Kamaruddin

Ibrahim

et al. 2017

J of Separation Science

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The efficiency of the extraction and removal of pollutants from food and the environment has been an important issue in analytical science. By incorporating inorganic species into an organic matrix, a new material known as an organic-inorganic hybrid material is formed. As it possesses high selectivity, permeability, and mechanical and chemical stabilities, organic-inorganic hybrid materials constitute an emerging research field and have become popular to serve as sorbents in various separaton science methods. Here, we review recent significant advances in analytical solid-phase extraction employing organic-inorganic composite/nanocomposite sorbents for the extraction of organic and inorganic pollutants from various types of food and environmental matrices. The physicochemical characteristics, extraction properties, and analytical performances of sorbents are discussed; including morphology and surface characteristics, types of functional groups, interaction mechanism, selectivity and sensitivity, accuracy, and regeneration abilities. Organic-inorganic hybrid sorbents combined with extraction techniques are highly promising for sample preparation of various food and environmental matrixes with analytes at trace levels.

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Section: Application Of Organic–inorganic Hybrid‐based Adsorbents In mentioning

confidence: 99%

Advances in organic–inorganic hybrid sorbents for the extraction of organic and inorganic pollutants in different types of food and environmental samples

Kamaruddin

Ibrahim

et al. 2017

J of Separation Science

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“…These heavy metals can seriously affect the ecological environment and human health. Heavy metals are not biodegradable, which are different from organic pollutants . Nowadays, water pollution has become an important environmental issue.…”

Section: Introductionmentioning

confidence: 99%

Preparation of PEI nanofiber membrane based on in situ and solution crosslinking technology and their adsorption properties

Song

Wang

et al. 2019

J of Applied Polymer Sci

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Two kinds of PEI (Polyethyleneimine) nanofibers membrane were successfully prepared by electrospinning and crosslinking technology, which were insoluble in water. One Polyethyleneimine/ Epichlorohydrin/ Polyacrylonitrile nanofibrous films (abbreviated as PEI/ EPI/ PAN NFs) was prepared by in situ crosslinking of PEI/PAN nanofiber containing of EPI, and the other PEI/ PAN/ EPI NFs was prepared by crosslinking PEI/ PAN nanofibers using EPI solution. The composition and morphology of nanofibers before and after crosslinking were investigated by infrared spectroscopy and scanning electron microscopy. PEI/EPI/PAN nanofibers exhibited excellent adsorption properties toward heavy metal ions and methyl orange dyes, which can also be reused multiple times. The adsorption rate of methyl orange remained around 75% after 4 cycles, meanwhile, the adsorption rate of copper and lead still remained around 90% after 5 cycles. In addition, we found that PEI/ PAN/ EPI nanofibers prepared by solution crosslinking technology solved the problem of easy gel formation in in situ crosslinking technology and facilitated the continuous production of PEI/ EPI/ PAN nanofibers, which is better than in situ crosslinking technology.

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“…Magnetic separation is a promising strategy to promote easy and fast recovery for valuable adsorbents and further reuse. 16 Currently, Fe 3 O 4 is widely studied in separation technology researches due to its excellent chemical stability, simple surface modification, cost-effective preparation, high surface area and biocompatibility, which is highly suitable in the adsorption technology for environmental protection. 17 In addition, CoFe 2 O 4 shows an interesting magnetic property among ferrites, which is attributed to its excellent chemical stability, moderate saturation magnetization and mechanical hardness.…”

Section: Introductionmentioning

confidence: 99%

FUNCTIONALIZED CELLULOSE BEADS WITH ACTIVATED CARBON Fe3O4/CoFe2O4 FOR CATIONIC DYE REMOVAL

Moosavi

Gan

Zakaria³

2019

Cellulose Chem. Technol.

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Modified regenerated cellulose beads functionalized with activated carbon (AC), as well as magnetic cellulose beads of AC-Fe 3 O 4 and AC-CoFe 2 O 4 , were synthesized. The AC was further used as adsorbent for the removal of cationic methylene blue (MB) dye from aqueous solution. The magnetic cellulose beads possessed a high magnetic response to an external magnetic field and their ease of recovery could be facilitated with the aid of a magnetic field. The synthesized adsorbents were characterized using a Field Emission Scanning Electron Microscope (FESEM), as well as by energy dispersive X-ray (EDX) spectrometry and thermogravimetric analysis (TGA). In comparison with the synthesized magnetic cellulose beads, the maximum adsorption capacity of the adsorbent beads assisted with AC, AC-Fe 3 O 4 and AC-CoFe 2 O 4 was of 54, 53 and 50 mg/g, respectively. The kinetic study of the adsorption of MB dye onto the adsorbents was performed at different parameters (initial dye concentration and temperature). The kinetics of the adsorption fit well with the pseudo-second-order model.

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Magnetic adsorption separation (MAS) process: An alternative method of extracting Cr(VI) from aqueous solution using polypyrrole coated Fe 3 O 4 nanocomposites

Cited by 70 publications

References 48 publications

Advances in organic–inorganic hybrid sorbents for the extraction of organic and inorganic pollutants in different types of food and environmental samples

Advances in organic–inorganic hybrid sorbents for the extraction of organic and inorganic pollutants in different types of food and environmental samples

Preparation of PEI nanofiber membrane based on in situ and solution crosslinking technology and their adsorption properties

FUNCTIONALIZED CELLULOSE BEADS WITH ACTIVATED CARBON Fe3O4/CoFe2O4 FOR CATIONIC DYE REMOVAL

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