Novel carbon-based composites enriched with Fe and Mn as effective and eco-friendly adsorbents of heavy metals in multicomponent solutions

Medykowska, Magdalena; Wiśniewska, Małgorzata; Galaburda, Mariia; Szewczuk-Karpisz, Katarzyna

doi:10.1016/j.chemosphere.2023.139958

Cited by 9 publications

(5 citation statements)

References 49 publications

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“…These materials have previously been used to remove lead(II) and zinc(II) ions from the single and mixed solutions. [11] The following results were obtained: C/Mn/SiO 2 adsorbed 211.60 mg/g of Pb(II). C/ SiO 2 and C/Fe/SiO 2 bound 137.40 and 168.95 mg/g of this metal ions, respectively.…”

Section: Introductionmentioning

confidence: 84%

“…Their detailed characterization was presented in the previous paper. [11] The non-steroidal anti-inflammatory drug -diclofenac, and the polymer -poly(acrylic acid) with the weight average molecular weight 2 000 Da, were applied as adsorbates. In addition, sodium chloride was used as a supporting electrolyte, as well as hydrochloric acid and sodium hydroxide were used to adjust the appropriate pH values of the examined samples.…”

Section: Methodsmentioning

confidence: 99%

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Adsorption Capacity of Carbon‐Silica Composites Towards Diclofenac in Poly(acrylic acid) Containing Systems: A Crucial Study on Common Wastewater Contaminants

Medykowska,

Wiśniewska,

Szewczuk‐Karpisz

et al. 2024

ChemPhysChem

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Diclofenac is one of the most popular over‐the‐counter non‐steroidal anti‐inflammatory drug and poly(acrylic acid) is a frequently used as thickener, filler or stabilizer. For these reasons, they are common organic contaminants in raw wastewater. The purpose of the presented studies was to compare the adsorption capacity of three carbon‐silica composites ‐ metal‐free C/SiO2, iron‐enriched C/Fe/SiO2 and manganese‐enriched C/Mn/SiO2 towards diclofenac. The studies were carried out in single, and mixed systems in the presence of poly(acrylic acid) polymer. Adsorption, desorption and kinetics of the adsorption process were investigated. The concentration of diclofenac in the supernatants was determined using high‐performance liquid chromatography. The solids were also characterized with an ASAP apparatus using low‐temperature nitrogen desorption adsorption isotherms at liquid nitrogen temperature. In addition, potentiometric titrations and electrophoretic mobility measurements, as well as stability tests of the studied suspensions were carried out. The most efficient composite among investigated ones proved to be C/Fe/SiO2 removing diclofenac at the level of 46.68 mg/g for its initial concentration of 90 ppm. The results obtained clearly demonstrated that the carbon‐silica composites are effective in separation of drugs from aqueous solutions and can be successfully used in the future for the removal of organic pollutants from water environment.

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Section: Introductionmentioning

confidence: 84%

Section: Methodsmentioning

confidence: 99%

Adsorption Capacity of Carbon‐Silica Composites Towards Diclofenac in Poly(acrylic acid) Containing Systems: A Crucial Study on Common Wastewater Contaminants

Medykowska,

Wiśniewska,

Szewczuk‐Karpisz

et al. 2024

ChemPhysChem

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“…The weight ratio of PFP-SiO 2 was 1:1 and the metal content in the samples was 3 mmol/g SiO 2 . In the second stage, pyrolysis of the prepared mixture was carried out at 800 • C under an argon atmosphere [19]. The texture parameters of the solids were measured on an ASAP 2020 instrument (Micromeritics Instrument Corporation, Norcross, GA, USA) using low temperature nitrogen adsorption-desorption isotherms and are listed in Table 1.…”

Section: Methodsmentioning

confidence: 99%

“…The adsorption isotherms and kinetics of heavy metals on Na-X and C/Mn/SiO2 were presented elsewhere [19]. In turn, the results of adsorption data modeling using Langmuir and Freundlich models are summarized in Table 2.…”

Section: Comparison Of Adsorption/desorption Of Heavy Metal Ions On T...mentioning

confidence: 99%

“…On the other hand, the ion adsorption on C/Mn/SiO2 was best fitted to the Freundlich model (R 2 = 0.976-0.994). This model describes the adsorption of metal ions on The adsorption isotherms and kinetics of heavy metals on Na-X and C/Mn/SiO 2 were presented elsewhere [19]. In turn, the results of adsorption data modeling using Langmuir and Freundlich models are summarized in Table 2.…”

Section: Comparison Of Adsorption/desorption Of Heavy Metal Ions On T...mentioning

confidence: 99%

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Green Synthesis and Efficient Adsorption: Na-X Zeolite vs. C/Mn/SiO2 Composite for Heavy Metals Removal

Medykowska,

Wiśniewska,

Szewczuk-Karpisz

et al. 2024

Materials

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The studies aimed to test the adsorption capacity of two silica-enriched porous materials, synthetic Na-X zeolite and Mn-containing carbon composite, towards Pb(II) and Zn(II) ions in single and mixed systems and in the presence of diclofenac (DCF) and (or) poly(acrylic acid) (PAA). The synthetic zeolite was characterized by a well-developed surface area of 728 m2/g and a pore diameter of 1.73 nm, while the carbon composite exhibited 268 m2/g and 7.37 nm, respectively. Na-X was found to be more efficient than the carbon composite (75–212 mg/g) in adsorbing heavy metal ions in both single and bimetallic systems (322–333 mg/g). In turn, the C/Mn/SiO2 composite was more effective in removing Pb(II) ions from the systems that simultaneously contained DCF or PAA (480 and 476 mg/g, respectively). The Na-X zeolite demonstrated the greatest stability in all the systems studied. The highest stability was observed in the DCF + Pb(II) mixture, in contrast to the carbon composites where the stability was much lower. To evaluate the possibility of regeneration of the solids, HCl proved to be the best desorbent for heavy metal ions (efficiency of 99%). In general, both adsorbents offer promising potential for solving environmental problems.

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Insight into immobilization mechanisms of metal/metalloid ions and herbicide molecules on waste-derived Na-X zeolite covered with macromolecules

Grygorczuk-Płaneta,

Panek,

Kuśmierz

et al. 2024

Applied Surface Science

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Novel carbon-based composites enriched with Fe and Mn as effective and eco-friendly adsorbents of heavy metals in multicomponent solutions

Cited by 9 publications

References 49 publications

Adsorption Capacity of Carbon‐Silica Composites Towards Diclofenac in Poly(acrylic acid) Containing Systems: A Crucial Study on Common Wastewater Contaminants

Adsorption Capacity of Carbon‐Silica Composites Towards Diclofenac in Poly(acrylic acid) Containing Systems: A Crucial Study on Common Wastewater Contaminants

Green Synthesis and Efficient Adsorption: Na-X Zeolite vs. C/Mn/SiO2 Composite for Heavy Metals Removal

Insight into immobilization mechanisms of metal/metalloid ions and herbicide molecules on waste-derived Na-X zeolite covered with macromolecules

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