Strippable Polymeric Nanocomposites Comprising 'Green' Chelates, for the Removal of Heavy Metals and Radionuclides
| Autor: | Florin Marian Dîrloman, Daniela Pulpea, Mihai Ionuț Ungureanu, Traian Rotariu, Florentina Alexe, Lucia Leonat, Aurel Diacon, Alice Podaru, Sorina Aurora Bajenaru, Edina Rusen, Ovidiu Iorga, Raluca Ginghina, Andreea Elena Moldovan, Bogdan Pulpea, Gabriela Toader |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Polymers and Plastics Environmental remediation surface decontamination Organic chemistry Polyvinyl alcohol Article Metal chemistry.chemical_compound QD241-441 Chelation radionuclide Nanocomposite radioactive material nanocomposite General Chemistry Human decontamination heavy metal Environmentally friendly chemistry Chemical engineering “green” chelates complexing agents strippable coating visual_art Bentonite visual_art.visual_art_medium |
| Zdroj: | Polymers Polymers, Vol 13, Iss 4194, p 4194 (2021) Polymers; Volume 13; Issue 23; Pages: 4194 |
| ISSN: | 2073-4360 |
| Popis: | The issue of heavy metal and radionuclide contamination is still causing a great deal of concern worldwide for environmental protection and industrial sites remediation. Various techniques have been developed for surface decontamination aiming for high decontamination factors (DF) and minimal environmental impact, but strippable polymeric nanocomposite coatings are some of the best candidates in this area. In this study, novel strippable coatings for heavy metal and radionuclides decontamination were developed based on the film-forming ability of polyvinyl alcohol, with the remarkable metal retention capacity of bentonite nanoclay, together with the chelating ability of sodium alginate and with “new-generation” “green” complexing agents: iminodisuccinic acid (IDS) and 2-phosphonobutane-1,2,4-tricarboxylic acid (PBTC). These environmentally friendly water-based decontamination solutions are capable of generating strippable polymeric films with optimized mechanical and thermal properties while exhibiting high decontamination efficiency (DF ≈ 95–98% for heavy metals tested on glass surface and DF ≈ 91–97% for radionuclides 241Am, 90Sr-Y and 137Cs on metal, painted metal, plastic, and glass surfaces). |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|