IQUIMEFA   05518
INSTITUTO QUIMICA Y METABOLISMO DEL FARMACO
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Metal Organic Framework advanced adsorbents to revalorize metal ions from mining and industrial wastewater sources
Autor/es:
G. J. COPELLO; G. I. TOVAR; E. LARRERA; R. FERNÁNDEZ DE LUIS; P. GONZALEZ-SAINZ; A. VALDEVERDE DE MINGO; M. I. ARRIORTUA; A. GARCIA; D. I. TORRES; A. FIDALGO
Lugar:
Barcelona
Reunión:
Simposio; Goldschmidt; 2019
Resumen:
Metal Organic Frameworks (MOFs) have emerged ashigh surface area chemical versatile adsorbents with highordered crystal structures able to overcome the performanceof classic adsorbent materials over organic and inorganicpollutant capture [1]. Regarding the metal ion revalorizationfrom polluted or mining wastewater sources, several studieshave revealed the MOFs capacity to capture low concentratedmetal ions/radioactive isotopes from complex multi-elementsolutions, even in the presence of competing ions at highconcentrations [2].In this work, we are currently exploring the potential ofMOF emerging technology. Indeed, selecting severalmicro/mesoporous MOF adsorbents, we have decorated themwith natural amino-acid motifs, shifting their adsorptionaffinity towards metal ions with different acidity strength.Despite the promising initial results obtained in slight acidicsolutions, the low chemical stability of the natural amino-acidgroups at acidic conditions (pH< 4) induce their release fromthe porous framework, and hence, the loss of the metal-ionspecificity of the designed adsorbent. To overcome this issue,a new functionalization pathway based on phosphonate andsulfonate groups is currently being applied to MOF materials,which will enable the application of these materials in highlyacidic conditions, such as bio-leachates or mining/industrialacid water sources, avoiding any metal ion specificity lossduring the adsorption process