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Bioinspired Metal‐Organic Frameworks in Mixed Matrix Membranes for Efficient Static/Dynamic Removal of Mercury from Water
Author(s) -
Bruno Rosaria,
Mon Marta,
Escamilla Paula,
FerrandoSoria Jesus,
Esposito Elisa,
Fuoco Alessio,
Monteleone Marcello,
Jansen Johannes C.,
Elliani Rosangela,
Tagarelli Antonio,
Armentano Donatella,
Pardo Emilio
Publication year - 2021
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.202008499
Subject(s) - metal organic framework , mercury (programming language) , membrane , sorbent , materials science , adsorption , water treatment , aqueous solution , chemical engineering , pollutant , metal , chemistry , organic chemistry , environmental engineering , metallurgy , environmental science , computer science , biochemistry , engineering , programming language
The mercury removal efficiency of a novel metal‐organic framework (MOF) derived from the amino acid S ‐methyl‐ L ‐cysteine is presented and the process is characterized by single‐crystal X‐ray crystallography. A feasibility study is further presented on the performance of this MOF—and also that of another MOF derived from the amino acid L ‐methionine—when used as the sorbent in mixed matrix membranes (MMMs). These MOF‐based MMMs exhibit high efficiency and selectivity—in both static and dynamic regimes—in the removal of Hg 2+ from aqueous environments, due to the high density of thioalkyl groups decorating MOF channels. Both MMMs are capable to reduce different concentration of the pollutant to acceptable limits for drinking water (<2 parts per billion). In addition, a novel device, consisting of the recirculation and adsorption of contaminated solutions through the MOF–MMMs, is designed and successfully explored in the selective capture of Hg 2+ . Thus, filtration of Hg 2+ solutions with multiple passes through the permeation cell shows a gradual decrease of the pollutant concentration. These results suggest that MOF‐based MMMs can be implemented in water remediation, helping to reduce either contaminants from accidental unauthorized or deliberate metal industrial dumping and to ensure access for clean and potable freshwater.