Composite membranes based on polyvinyl alcohol and lamellar solids for water decontamination

Bastianini, Maria; Sisani, Michele; Naryyev, Eziz; Petracci, Annarita; Di Guida, Irene; Narducci, Riccardo

doi:10.1039/d3nj04942f

Cited by 2 publications

(1 citation statement)

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“…Physical processes include sedimentation, degasification, and filtration [ 24 , 25 ]. Chemical approaches provide flocculation/coagulation, ozonation, chemical precipitation, adsorption, and ion exchange [ 26 , 27 , 28 , 29 , 30 , 31 ]. Aerobic and anaerobic treatments and phytoremediation belong to biological methods [ 32 , 33 , 34 , 35 , 36 , 37 ].…”

Section: Introductionmentioning

confidence: 99%

Three-Dimensional Printed Filters Based on Poly(ethylene glycol) Diacrylate Hydrogels Doped with Silver Nanoparticles for Removing Hg(II) Ions from Water

Burratti,

Bertelà,

Sisani

et al. 2024

Polymers

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Nowadays, due to water pollution, more and more living beings are exposed to dangerous compounds, which can lead to them contracting diseases. The removal of contaminants (including heavy metals) from water is, therefore, a necessary aspect to guarantee the well-being of living beings. Among the most used techniques, the employment of adsorbent materials is certainly advantageous, as they are easy to synthesize and are cheap. In this work, poly(ethylene glycol) diacrylate (PEGDA) hydrogels doped with silver nanoparticles (AgNPs) for removing Hg(II) ions from water are presented. AgNPs were embedded in PEGDA-based matrices by using a photo-polymerizable solution. By exploiting a custom-made 3D printer, the filters were synthesized. The kinetics of interaction was studied, revealing that the adsorption equilibrium is achieved in 8 h. Subsequently, the adsorption isotherms of PEGDA doped with AgNPs towards Hg(II) ions were studied at different temperatures (4 °C, 25 °C, and 50 °C). In all cases, the best isotherm model was the Langmuir one (revealing that the chemisorption is the driving process and the most favorable one), with maximum adsorption capacities equal to 0.55, 0.57, and 0.61 mg/g, respectively. Finally, the removal efficiency was evaluated for the three temperatures, obtaining for 4 °C, 25 °C, and 50 °C the values 94%, 94%, and 86%, respectively.

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Section: Introductionmentioning

confidence: 99%

Three-Dimensional Printed Filters Based on Poly(ethylene glycol) Diacrylate Hydrogels Doped with Silver Nanoparticles for Removing Hg(II) Ions from Water

Burratti,

Bertelà,

Sisani

et al. 2024

Polymers

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Polyvinyl Alcohol Coatings Containing Lamellar Solids with Antimicrobial Activity

Bastianini,

Sisani,

Escudero García

et al. 2024

Physchem

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The design of an antimicrobial coating material has become important in the prevention of infections caused by the transmission of pathogens coming from human contact with contaminated surfaces. With that aim, layered single hydroxides (LSHs) and layered double hydroxides (LDHs) containing Zn and Cu intercalated with antimicrobial molecules were synthesized and characterized. Cinnamate and salicylate anions were chosen because of their well-known antimicrobial activity. Several coatings based on polyvinyl alcohol (PVA) and LDHs or LSHs with increasing amounts of filler were prepared and filmed on a polyethylene terephthalate (PET) substrate. The coatings were characterized, and their antimicrobial activity was evaluated against several pathogens that are critical in nosocomial infections, showing a synergistic effect between metal ions and active molecules and the ability to inhibit their growth.

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Composite membranes based on polyvinyl alcohol and lamellar solids for water decontamination

Abstract: The removal of pollutants from wastewater is of primary importance for the environment and human health. The materials that we propose for the first time for that application is a...

Cited by 2 publications

References 61 publications

Three-Dimensional Printed Filters Based on Poly(ethylene glycol) Diacrylate Hydrogels Doped with Silver Nanoparticles for Removing Hg(II) Ions from Water

Three-Dimensional Printed Filters Based on Poly(ethylene glycol) Diacrylate Hydrogels Doped with Silver Nanoparticles for Removing Hg(II) Ions from Water

Polyvinyl Alcohol Coatings Containing Lamellar Solids with Antimicrobial Activity

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