Silver(I) recovery on sulfur-containing polymeric sorbents from chloride solutions

Pilśniak-Rabiega, Magdalena; Wolska, Joanna

doi:10.37190/ppmp/130400

Cited by 6 publications

(9 citation statements)

References 31 publications

(58 reference statements)

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“…For functional polymers with 2-mercapto-1-methylimidazole and guanylthiourea ligands, the maximum sorption capacity of AgCl4 3-obtained by those of the Elovich model was 40.7 and 194.2 [mg Ag/g], respectively (Pilśniak-Rabiega and Wolska, 2020).…”

Section: Isotherm Of Sorptionmentioning

confidence: 99%

“…The microwave-modified immobilization efficiency of heterocyclic groups in the VBC/DVB copolymer was 50-90% (Pilśniak-Rabiega et al, 2019;Pilśniak-Rabiega and Wolska, 2020;Pilśniak-Rabiega and Wolska, 2021). Resin I had small values of water regain (1.06 g of water/g of polymer) due to the presence of sulfur atoms, which showed hydrophobic properties.…”

Section: Synthesis and Characterization Of The Resinmentioning

confidence: 99%

“…The results of the Ag(I) sorption rate on functional polymers presented in the literature are comparable to those obtained on the thiomorpholine-modified resin. The maximum AgCl4 3-adsorption on resins with 2-mercapto-1-methylimidazole and guanylthiourea ligands was reached within 48 hours (Pilśniak-Rabiega and Wolska, 2020). For the 2-mercaptobenzimidazole derivative of chitosan, the maximum Ag(I) adsorption was obtained after 28 hours (Elwakeel et al, 2021).…”

Section: Effect Of Contact Timementioning

confidence: 99%

“…Table 7. Sorption of Ag(I) and Cu(II) on resin I from synthetic chloride solution (CAg = 60.0 mg/dm 3 (0.556 mmol/dm 3 ), CCu = 32.1 mg/dm 3 (0.505 mmol/dm 3 ), CHCl = 0.10 mol/dm 3 , CNaCl = 4.0 mol/dm 3 , time: 24 h, T: 23±2ºC ) The resins with the 2-mercapto-1-methylimidazole and guanylthiourea groups showed good selectivity for Ag(I) ions in the Ag(I)-Cu(II) binary system (Pilśniak-Rabiega et al, 2020). The values of the selectivity coefficient (αsel.)…”

Section: Ag(i) Sorption From Synthetic Chloride Solutionmentioning

confidence: 99%

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Silver(I) recovery on thiomorpholine - modified functional polymer

Pilśniak-Rabiega¹,

Wolska²

2022

Physicochem. Probl. Miner. Process.

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The functional polymer containing heterocyclic ligands was synthesized by microwave modification of a crosslinked poly(vinylbenzyl chloride–divinylbenzene) matrix with thiomorpholine. The modification yield was 89.3%. The sorbent was used to recover Ag(I) from the synthetic and real chloride solutions. The maximum sorption capacity of Ag(I) was approximately 180 mg Ag/g. The sorption kinetic data were well-fitted to the pseudo-first-order kinetic model. The degree of silver desorption was approximately 50.0% using a 1.0% potassium cyanide solution in a 0.50% hydrogen peroxide solution. The resin retained its capacity toward Ag(I) in five consecutive sorption/desorption cycles. The thiomorpholine modified resin was highly selective toward Ag(I) in relation to Cu(II), Pb(II), Co(II), Ni(II), and Zn(II) from the real chloride leaching solution.

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Section: Isotherm Of Sorptionmentioning

confidence: 99%

Section: Synthesis and Characterization Of The Resinmentioning

confidence: 99%

Section: Effect Of Contact Timementioning

confidence: 99%

Section: Ag(i) Sorption From Synthetic Chloride Solutionmentioning

confidence: 99%

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Silver(I) recovery on thiomorpholine - modified functional polymer

Pilśniak-Rabiega¹,

Wolska²

2022

Physicochem. Probl. Miner. Process.

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“…The 2-mercapto-1-methylimidazole resin was highly selective towards Ag(I) in relation to Pb(II) from real chloride leaching solution. The resins were selective for Ag(I) in real chloride solution and they did not sorb chloride complexes of Co(II), Ni(II), and Zn(II) (Pilśniak-Rabiega and Wolska, 2020).…”

Section: Introductionmentioning

confidence: 99%

Novel functional polymers for recovery of silver

Pilśniak-Rabiega¹,

Wolska²

2021

Physicochem. Probl. Miner. Process.

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In this study, the functional polymers containing heterocyclic ligands were synthesized by microwave modification of a crosslinked poly(vinylbenzyl chloride-divinylbenzene) matrix with 4-tertbutylpyridine, pyrrolidine, and 3-morpholinopropylamine. The sorbents were used to recover Ag(I) from the synthetic and real chloride solutions (4.00 mol/dm 3 of NaCl, 0.100 mol/dm 3 of HCl). The best Ag(I) sorption was achieved from synthetic and real chloride solutions in the case of pyrrolidine resin (16.2 and 16.7 mg/g, respectively). The sorption kinetic data were well fitted to the pseudo-first-order kinetic model. The degree of silver desorption was approximately 90% using a 1.0% potassium cyanide solution in a 0.50% hydrogen peroxide solution. All resins showed good selectivity for Ag(I) compared to Cu(II), Pb(II), Co(II), Ni(II), and Zn(II) in real chloride solution. On the basis of this study, it can be concluded that the obtained sorbents can be used to recover Ag from various sources such as ores, wastewater, and jewelry scraps.

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