Sorption properties of cellulose filters with covalently immobilized thiosemicarbazide

Темердашев, З. А.; Konshina, Dzh. N.; Logacheva, E. Yu.; Коншин, В. В.

doi:10.1134/s1061934811100157

Cited by 12 publications

(6 citation statements)

References 2 publications

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“…It consists of a large number of hydroxyl groups, which are used for metal adsorption and can be attractive as a starting material since it is cheap and an abundant natural biopolymer on earth. − In recent years researchers have tried to increase the adsorption efficiency by grafting chelating agents in the biopolymer which enhances their chemical strength and metal chelation. Hence, the adsorption property was enhanced by the inclusion of thiosemicarbazide in chitosan and cellulose filters − used for the removal of Cu(II) ions from wastewater. In this work CMC was selected as a biopolymer.…”

Section: Introductionmentioning

confidence: 99%

Preparation, Kinetics, Thermodynamics, and Mechanism Evaluation of Thiosemicarbazide Modified Green Carboxymethyl Cellulose as an Efficient Cu(II) Adsorbent

et al. 2018

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Thiosemicarbazide-modified carboxymethyl cellulose adsorbent (TCMC) was synthesized by the oxidation reaction of carboxymethyl cellulose with sodium periodate followed by a condensation reaction with thiosemicarbazide and stabilized with sodium borohydride. TCMC was characterized by field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD), thermogravimetric analyzer (TGA), X-ray photoelectron spectroscopy (XPS), and Fourier-transform infrared spectroscopy (FTIR). FTIR and XPS analysis successfully shows inclusion of the sulfur and Cu(II) adsorption mechanism onto TCMC. It was also confirmed that the maximum adsorption of Cu(II) ions was achieved by the presence of NH2, OH, and COOH groups. The effects of aldehyde content, pH, time, and concentration of Cu(II) ions were analyzed. Kinetics and error analysis suggested that the pseudo-second-order was best fitted for the adsorption of Cu(II) ions than the other models. The maximum Cu(II) ion adsorption was obtained by the Langmuir model is 144.92 (mg g–1) which is greater than the other adsorbents. Furthermore, TCMC also showed a higher regeneration and Cu(II) ion recovery, and the adsorbent can be regenerated without the loss of adsorption efficiency after various adsorption/desorption cycles.

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Section: Introductionmentioning

confidence: 99%

Preparation, Kinetics, Thermodynamics, and Mechanism Evaluation of Thiosemicarbazide Modified Green Carboxymethyl Cellulose as an Efficient Cu(II) Adsorbent

et al. 2018

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“…MTC had the lowest adsorption time (for 30 min) with the capacity of 106.3829 mg g –1 , which was lower than only thiosemicarbazide carboxymethyl cellulose. Under the same conditions, there was no significant difference in the adsorption capacity of MTC compared to the N (4)-nonsubstituted TSC cellulose. − Therefore, it can be concluded that the heterocyclic substitute as the morpholine moiety at the N (4) position of thiosemicarbazide does not affect the adsorption capacity of TSC cellulose.…”

Section: Resultsmentioning

confidence: 85%

“…The adsorption of cellulose can be improved by condensation with nonsubstituted thiosemicarbazide (TSC) − and phenyl group-substituted ones . In Vietnam, many studies showed the modified cellulose possessed the greater adsorption performance than activated carbons, zeolites, for removing heavy metal ions. , In this research, cotton from India (Gossypium hirsutum L.) was the main raw material that was collected from the GLE Logistics warehouse.…”

Section: Introductionmentioning

confidence: 99%

Thiosemicarbazone-Modified Cellulose: Synthesis, Characterization, and Adsorption Studies on Cu(II) Removal

Nguyen

Tran

et al. 2020

ACS Omega

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Thiosemicarbazide-modified cellulose (MTC) has been studied for removing heavy metals in the water source or for extracting some precious metals. The conditions of synthesis of MTC and Cu(II) removal were optimized by single-variable analysis through oxidation–reduction on titration and photometry. The results of Fourier-transform infrared spectroscopy, Brunauer–Emmett–Teller, and thermogravimetric analyses show that MTC exists in the thioketone form with a high surface area and heat durability. The Cu(II) removal was of pseudo-second order and the isotherm equation correlated best with the Langmuir equation. MTC has the maximum capacity of adsorption, which is q m = 106.3829 mg g–1. Furthermore, MTC can be regenerated without the loss of adsorption efficiency after ten cycles of adsorption and desorption.

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“…These magnetic hybrid hydrogel having high adsorption capacities for various heavy metal ions such as Cu(II), Pb(II) and Fe(II) ions and the consistent equilibrium adsorption capacity was found to be 44.7 ± 5 mgg -1 , 28.1 ± 3 mgg -1, and 94.1 ± 7 mgg -1 respectively 68 . A novel type cellulose adsorbent bearing chemically grafted thiosemicarbazide was used for adsorption of Co(II), Hg(II) and Cd(II) ions 69 . Hydroxylamine was used for the Introduction of amidoxime group in cellulose-graft polyacrylonitrile (C-g-PAN).…”

Section: Fig 1: Shows the Extraction Of Cellulose From Different Wood Sourcesmentioning

confidence: 99%

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2015

IJPSR

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Rapid industrialization and modernization have introduced substantial amounts of toxic heavy metals into the aquatic and terrestrial environment which possess a severe threat to flora and fauna. In recent years, considerable research work has been done and is currently underway on some natural biopolymers and their modifications to remove different kinds of heavy metal ions. Chitosan and cellulose, both naturally occurring polysaccharides are the most effective adsorbents for the removal of heavy metal ions from wastewater. This review is aimed to provide relevant and recent information on the application of chitosan, cellulose and their respective derivatives for the removal of toxic heavy metal ions. INTRODUCTION:Majority of industries and mainly the mining operations, tanneries, and metal plating play a vital role in contaminating the environment with heavy metals 1 . Heavy metals particularly mercury (Hg), chromium (Cr), lead (Pb) and cadmium (Cd) have lethal effects on all forms of life even at low concentrations. Various methods including chemical precipitation 2 , nanofiltration 3 , solvent extraction 4 , ion exchange 5 , reverse osmosis 6, and adsorption 7 have been extensively studied in recent decade to decontaminate the polluted waters. Out of all these methods, adsorption is particularly attracting scientific focus mainly because of its high efficiency, low cost, easy handling and high availability of different adsorbents.

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Sorption properties of cellulose filters with covalently immobilized thiosemicarbazide

Cited by 12 publications

References 2 publications

Preparation, Kinetics, Thermodynamics, and Mechanism Evaluation of Thiosemicarbazide Modified Green Carboxymethyl Cellulose as an Efficient Cu(II) Adsorbent

Preparation, Kinetics, Thermodynamics, and Mechanism Evaluation of Thiosemicarbazide Modified Green Carboxymethyl Cellulose as an Efficient Cu(II) Adsorbent

Thiosemicarbazone-Modified Cellulose: Synthesis, Characterization, and Adsorption Studies on Cu(II) Removal

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