L -lysine and EDTA polymer mimics as resins for the quantitative and reversible removal of heavy metal ion water pollutants

Nicolò Mauro, Manuela Rossi, Francesco Colombo, Nicolò Mauro, Riccardo Bruni, Francesco Colombo, Elisabetta Ranucci, Paolo Ferruti, Patrizia Mussini, Amedea Manfredi, Elena Ferrari

Risultato della ricerca: Articlepeer review

6 Citazioni (Scopus)

Abstract

Traditional precipitation methods for inorganic micropollutant removal from waters are increasingly being replaced by sorption methods based on both natural and synthetic materials. In this context, two novel effective heavy metal ions absorbers are presented. These resins, LYMA and LMT85, were crosslinked poly(amidoamine)s carrying amine and carboxyl groups in their repeating units. In particular, the LYMA-repeating unit contains one carboxyl and two amine groups and is a mimic of L-lysine, whereas LMT85 contains two amine and five carboxyl groups and is a mimic of EDTA. Both resins were prepared at moderate cost by simple eco-friendly procedures. The heavy metal ion set adopted as benchmark was Cu 2+, Cd 2+, Pb 2+, Zn 2+, Ni 2+, and Co 2+. LYMA proved selective for Cu 2+ and Ni 2+, the other ions tested being negligibly absorbed, whereas LMT85 proved capable of rapidly and quantitatively absorbing all the ions tested either singly or in mixed solution. The absorption process was reversible, and the resins were easily regenerated by acidification. The absorption of several metal ions imparted intense coloring to the resins, a feature possibly exploitable for analytical purposes. © 2012 Wiley Periodicals, Inc.
Lingua originaleEnglish
pagine (da-a)5000-5010
Numero di pagine11
RivistaJOURNAL OF POLYMER SCIENCE. PART A, POLYMER CHEMISTRY
Volume50
Stato di pubblicazionePublished - 2012

All Science Journal Classification (ASJC) codes

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  • ???subjectarea.asjc.1600.1605???
  • ???subjectarea.asjc.2500.2505???

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