Sorption of cadmium ions with chemisorbing polymer fibers

Druzhinina, T. V.; Kilyushik, Yu. A.; Plotnikov, D. P.

doi:10.1134/s0040579510051082

Cited by 6 publications

(2 citation statements)

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“…The alkyl chain lengths of DGA moieties can be altered as per need but even such a versatile ligand has its limitations like adduct and micelle formation in high acidity. Researchers have tried to counter this disadvantage by using ligand facilitated adsorption [30][31][32][33][34], grafted polymeric resins or sorbents [35][36][37][38], using dendritic polymers [39][40], blending of extractants [41][42] or altering the structure of DGA (Diglycolamide) functionalties [4], [24], [29], [43][44][45][46].…”

Section: Introductionmentioning

confidence: 99%

Covalent grafting of Diglycolamide functionalities over Merrifield resin for the uptake of trivalent f-block metal ions from acidic aqueous feed

Patwardhan

2023

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In the present work, N, N-Dibutyl diglycolamide functionalities were covalently grafted over Merrifield resin by following novel green chemistry principles during the entire process of synthesis. Minimal use of hazardous chemicals, improved yields and moderate reaction conditions were the bedrocks throughout the process. This grafted resin was used as an adsorbent for the uptake of trivalent f-block elements from aqueous nitric acid feed (3M HNO3). The synthesized resin MRBB (N, N-Dibutyl diglycolamide grafted over n-butyl aminated Merrifield resin) was characterized with grafting percentage of >66%. Am 3+ an actinide was used as a radiotracer for preliminary studies to check the efficacy of synthesized polymeric adsorbent. After optimization of synthesis parameters, Eu 3+ salt, a surrogate lanthanide ion was used in an aqueous feed to optimize the operating parameters of adsorption. The distribution coefficients KD for different conditions were in the range of thousands but for a similar kind of work with malonamides the range was just in hundreds as reported in the available literature. The adsorption kinetics predominantly follows pseudo-second order reaction with k2 = 6.3 x 10 -5 g/(mg-min). The work is an important contribution in sustainable organic, polymer and nuclear chemistry.

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Section: Introductionmentioning

confidence: 99%

Covalent grafting of Diglycolamide functionalities over Merrifield resin for the uptake of trivalent f-block metal ions from acidic aqueous feed

Patwardhan

2023

Preprint

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“…There are a large number of types of sorbents, including oxide minerals [9], zeolite [14], biosorbent [15], agricultural wastes [16,17], organic/inorganic composite [18], activated carbon [10,19], resin [20], fiber [21] and modified silica gel [10,22], which have been applied to remove or enrich trace amounts of cadmium (II) ion from aqueous solutions. However, it is necessary to develop further to get cheaper and more available adsorbent with good performance for improving the efficiency of the adsorption process.…”

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confidence: 99%