Adsorptive removal of uranium ions from liquid waste solutions by phosphorylated chitosan

Morsy, A. M. A.

doi:10.1016/j.eti.2015.10.002

Cited by 42 publications

(16 citation statements)

References 31 publications

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“…Due to the high affinity of phosphoryl groups to uranium (Zhou et al 2015), phosphorylated materials such as lignin (Bykov and Ershov 2009), pine wood sawdust (Zhou et al 2015), graphene oxide (Liu et al 2015b;Chen et al 2017), carbon spheres (Yu et al 2014), chitosan (Sakaguchi et al 1981;Morsy 2015), cactus fibers (Prodromou and Pashalidis 2013), polyethylene (Shao et al 2017), zirconium (Um et al 2007), and mesoporous silica (Sarafraz et al 2017;Xue et al 2017), have been demonstrated for uranium removal. Phosphorous-based functional groups act as chelating agents and thus favor binding of uranyl species (Xie et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Phosphorylated cellulose nanofibers exhibit exceptional capacity for uranium capture

et al. 2020

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We investigate the adsorption of hexavalent uranium, U(VI), on phosphorylated cellulose nanofibers (PHO-CNF) and compare the results with those for native and TEMPO-oxidized nanocelluloses. Batch adsorption experiments in aqueous media show that PHO-CNF is highly efficient in removing U(VI) in the pH range between 3 and 6. Gelling of nanofiber hydrogels is observed at U(VI) concentration of 500 mg/L. Structural changes in the nanofiber network (scanning and transmission electron microscopies) and the surface chemical composition (X-ray photoelectron spectroscopy) gave insights on the mechanism of adsorption. The results from batch adsorption experiments are fitted to Langmuir, Freundlich, and Sips isotherm models, which indicate a maximum adsorption capacity of 1550 mg/g, the highest value reported so far for any bioadsorbent. Compared to other metals (Zn, Mn, and Cu) and typical ions present in natural aqueous matrices the phosphorylated nanofibers are shown to be remarkably selective to U(VI). The results suggest a solution for the capture of uranium, which is of interest given its health and toxic impacts when present in aqueous matrices.

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Section: Introductionmentioning

confidence: 99%

Phosphorylated cellulose nanofibers exhibit exceptional capacity for uranium capture

et al. 2020

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“…C-H stretching peak was observed at around 2900 cm À1 and at 1631 cm À1 for C-H and C]C bonds. 37 Additional peaks obtained for PCNF at 1739 cm À1 , This conrms the successful modication of the nanober with phosphate group which is responsible for the efficient binding with U(VI).…”

Section: Preparation Of the Adsorbentmentioning

confidence: 95%

Prospective application of phosphorylated carbon nanofibers with a high adsorption capacity for the sequestration of uranium from ground water

2022

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“…Their high affinity for metals, organic and inorganic particles coupled with the higher surface area makes them promising materials for the removal of contaminants from wastewater (Chen et al 2013;Schwarz et al 2016;Singh et al 2019;Suri 2020;Suri et al 2021;Upadhyay et al 2021). In combination with graphene oxide (GO) and inorganic nanoparticles such as ZnO, Fe3O4, GO, and TiO2, it is possible to introduce additional functional groups that can increase their chelation capacity, improve the surface area and active sites, and assist in further modification of their properties (Kyzas and Bikiaris 2015;Morsy 2015;Salam 2017;ZabihiSahebi et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Chitosan and graphene oxide-based nanocomposites for water purification and medical applications: A review

Khandegar

Kaur

Chanana

2021

BioRes

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Chitosan (CS) is a natural polysaccharide isolated from insects, molluscs, and fungi. The specific properties of chitosan can be enhanced using physicochemical processes. The composites prepared using CS and graphene oxide (GO) contain active functional groups such as epoxide, carboxyl, and hydroxyl, which possess excellent biocompatibility, high adsorption capacity, and biodegradability. Their low cost and ease of scale-up make them employable for multiple applications in water-treatment plants, electronics, solar cells, and pharmaceuticals. This review provides an overview of sources, types, and properties of chitin, chitosan, and graphene oxide. The use of these composites for the preparation of anti-microbial drugs has been discussed here. The article also explores the applicability of such composites for removal of heavy metals (lead, copper, chromium, cobalt, mercury, etc.), dyes (methylene blue and other reactive dyes), and organic and inorganic contaminants (ofloxacin, naphthanol, phenol, and oil, etc.). The article highlights various knowledge gaps in the field and the scope of future work.

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Adsorptive removal of uranium ions from liquid waste solutions by phosphorylated chitosan

Cited by 42 publications

References 31 publications

Phosphorylated cellulose nanofibers exhibit exceptional capacity for uranium capture

Phosphorylated cellulose nanofibers exhibit exceptional capacity for uranium capture

Prospective application of phosphorylated carbon nanofibers with a high adsorption capacity for the sequestration of uranium from ground water

Chitosan and graphene oxide-based nanocomposites for water purification and medical applications: A review

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