Nanochitin/manganese oxide-biodegradable hybrid sorbent for heavy metal ions

Krivoshapkin, Pavel V.; Иванец, А. И.; Торлопов, М. А.; Mikhaylov, Vasily I.; Srivastava, Varsha; Sillanpää, Mika; Prozorovich, Vladimir; Kouznetsova, T. F.; Koshevaya, Ekaterina D.

doi:10.1016/j.carbpol.2019.01.045

Cited by 47 publications

(13 citation statements)

References 39 publications

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“…There is still a need for developing alternative sorbents to synthetic petro-sourced resins. Activated carbon, 9 inorganic supports such as biosorbents have retained a great attention for the last decades; [10][11][12][13][14] they are based on renewable resources bearing similar reactive groups to the functional groups held on synthetic resins. Biopolymers such as cellulose, 15,16 and alginate 17,18 or chitosan 19,20 have been widely investigated for their sorption properties making benefit of the presence of carboxylic groups and amino functional groups, respectively.…”

Section: Introductionmentioning

confidence: 99%

Uranium(VI) and zirconium(IV) sorption on magnetic chitosan derivatives – effect of different functional groups on separation properties

Hamza

Gamal

Hussein

et al. 2019

J of Chemical Tech & Biotech

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BACKGROUND The recovery of metal ions from aqueous solutions for environmental preservation or resource saving requires the development of new sorbents with enhanced separation properties. A new process has been designed for the functionalization of magnetic chitosan microparticles with grafting of either amidoxime (AO‐AHC) or hydrazinyl amine (HZ‐AHC). Their sorption properties have been tested for the recovery of uranium(VI) and zirconium(IV) from aqueous solutions. RESULTS A wide range of analytical tools is used for characterizing not only the chemical modifications but also the interaction mode between the sorbent and target metal ions; including elemental analysis and titration, Fourier‐transform infrared (FTIR) spectroscopy and X‐ray photoelectron spectroscopy (XPS) characterizations, transmission electron microscopy (TEM) and scanning electron microscopy (SEM) observations, energy‐dispersive X‐ray spectroscopy (EDX) analysis and textural characterization. The optimum pH values were found in the range 4–5. The maximum sorption capacities depend on the metal and the kind of functionalization: up to 1.38 mmol U g−1 for AO‐AHC and up to 1.96 mmol Zr g−1 for HZ‐AHC. The small size of magnetic particles limits the contribution of diffusion mechanisms in the overall control of uptake kinetics and the equilibrium is reached within 40–60 min. Metal desorption is highly effective (almost quantitative over five successive cycles of sorption and desorption) using 0.3 M hydrochloric acid solutions. CONCLUSION AO‐AHC sorbent is more selective than HZ‐AHC in terms of separation of uranium(VI) from zirconium(IV), especially at pH close to 4. The results obtained in the treatment of acidic ore leachates confirm these trends. © 2019 Society of Chemical Industry

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Section: Introductionmentioning

confidence: 99%

Uranium(VI) and zirconium(IV) sorption on magnetic chitosan derivatives – effect of different functional groups on separation properties

Hamza

Gamal

Hussein

et al. 2019

J of Chemical Tech & Biotech

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“…Within 10 h, the FPCC magnetic microfibers (adsorbent dosage: 1 g, pH: 4.1, and temperature: 293 K) could adsorb 99.7% Ni (II), after which the hybridized microfibers were shown to be readily isolated from the aqueous solution by a magnetic separation process. The manufacture of nanochitin/manganese oxide-biodegradable composite adsorbent for heavy metal ions was also documented by Krivoshapkin et al where it was found that the use of organomineral composite sorbents adopted the Ni 2+ > Cu 2+ > Sr 2+ pattern for removal of heavy metal ions, with a sorption efficiency of 114.0 ± 1.1 mg/g for Ni 2+ [122]. The harvested biodegradable sorbents were aimed at addressing ecological problems correlated with radioactive metallic ions polluting natural water.…”

Section: Formmentioning

confidence: 79%

Extraction of Nanochitin from Marine Resources and Fabrication of Polymer Nanocomposites: Recent Advances

Joseph

Sam²,

Balakrishnan

et al. 2020

Polymers

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Industrial sea food residues, mainly crab and shrimp shells, are considered to be the most promising and abundant source of chitin. In-depth understanding of the biological properties of chitin and scientific advancements in the field of nanotechnology have enabled the development of high-performance chitin nanomaterials. Nanoscale chitin is of great economic value as an efficient functional and reinforcement material for a wide range of applications ranging from water purification to tissue engineering. The use of polymers and nanochitin to produce (bio) nanocomposites offers a good opportunity to prepare bioplastic materials with enhanced functional and structural properties. Most processes for nanochitin isolation rely on the use of chemical, physical or mechanical methods. Chitin-based nanocomposites are fabricated by various methods, involving electrospinning, freeze drying, etc. This review discusses the progress and new developments in the isolation and physico-chemical characterization of chitin; it also highlights the processing of nanochitin in various composite and functional materials.

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“…Currently, porous materials, such as zeolite [ 8 ], mesoporous carbon [ 9 , 10 ], and metal organic frameworks (MOFs) [ 11 ], are popular absorbent choices to remove uraemic toxins, due to their high adsorption performance to bind PBUTs (i.e., via the physical adsorption). Meanwhile, chitosan, a non-porous polysaccharide used in water purification [ 12 , 13 ], was found to reduce the indoxyl sulfate concentration in aqueous solution via the non-physical interactions between chitosan and indoxyl sulfate [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

Sponge-like Chitosan Based Porous Monolith for Uraemic Toxins Sorption

et al. 2021

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More than three million patients are treated for kidney failure world-wide. Haemodialysis, the most commonly used treatment, requires large amounts of water and generates mountains of non-recyclable plastic waste. To improve the environmental footprint, dialysis treatments need to develop absorbents to regenerate the waste dialysate. Whereas conventional dialysis clears water-soluble toxins, it is not so effective in clearing protein-bound uraemic toxins (PBUTs), such as indoxyl sulfate (IS). Thus, developing absorption devices to remove both water-soluble toxins and PBUTs would be advantageous. Vapour induced phase separation (VIPS) has been used in this work to produce polycaprolactone/chitosan (PCL/CS) composite symmetric porous monoliths with extra porous carbon additives to increase creatinine and albumin-bound IS absorption. Moreover, these easy-to-fabricate porous monoliths can be formed into the required geometry. The PCL/CS porous monoliths absorbed 436 μg/g of albumin-bound IS and 2865 μg/g of creatinine in a single-pass perfusion model within 1 h. This porous PCL/CS monolith could potentially be used to absorb uraemic toxins, including PBUTs, and thus allow the regeneration of waste dialysate and the development of a new generation of environmentally sustainable dialysis treatments, including wearable devices.

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Nanochitin/manganese oxide-biodegradable hybrid sorbent for heavy metal ions

Cited by 47 publications

References 39 publications

Uranium(VI) and zirconium(IV) sorption on magnetic chitosan derivatives – effect of different functional groups on separation properties

Uranium(VI) and zirconium(IV) sorption on magnetic chitosan derivatives – effect of different functional groups on separation properties

Extraction of Nanochitin from Marine Resources and Fabrication of Polymer Nanocomposites: Recent Advances

Sponge-like Chitosan Based Porous Monolith for Uraemic Toxins Sorption

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