Antibiofouling thin-film composite membranes (TFC) by in situ formation of Cu-(m-phenylenediamine) oligomer complex

Rodríguez, Bárbara; Öztürk, Deniz Gülfem; Rosales, Maibelín; Flores, Marcos; García, Alejandra

doi:10.1007/s10853-018-2039-4

Cited by 28 publications

(32 citation statements)

References 47 publications

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“…For instance, Rodriguez et al [ 22 ] studied the synthesis of modified membranes with copper salt added in situ during the interfacial polymerization process. In this case, they proposed a mechanism of formation of copper oligomer-complex in coordination with atoms of the polyamide layer of the membrane.…”

Section: Resultsmentioning

confidence: 99%

“…The PS support was fabricated using the phase-inversion method according to the previously reported synthesis [ 19 , 20 , 21 , 22 ]. A PS solution (15% weight) was prepared by dissolving a polysulfone pellet in DMF:NMP (4:1) mixture for 2 h at 65 °C.…”

Section: Methodsmentioning

confidence: 99%

“…Several studies oriented to the incorporation of inorganic and metallic nanoparticles (NPs) like Silver [ 11 , 14 , 15 ], Zinc oxide [ 16 , 17 ] or Titanium oxide [ 18 , 19 ] with antibacterial capacity in RO membranes have been developed. The incorporation of inorganic nanoparticles, with antimicrobial properties, has been reported as an effective route to enhance the antibiofouling capacity of the RO membranes [ 11 , 19 , 20 , 21 , 22 , 23 , 24 , 25 ]. In particular, studies on the incorporation of copper-based nanoparticles (copper-based NPs) show a great capacity to induce toxic effects in bacteria, fungi and algae without depleting its permeability and salt rejection [ 20 , 26 , 27 , 28 ].…”

Section: Introductionmentioning

confidence: 99%

“…In particular, studies on the incorporation of copper-based nanoparticles (copper-based NPs) show a great capacity to induce toxic effects in bacteria, fungi and algae without depleting its permeability and salt rejection [ 20 , 26 , 27 , 28 ]. B. Rodriguez et al [ 22 ] incorporated a copper oligomer complex in TFC-RO membranes in situ during the interfacial polymerization process, obtaining improved biocidal capacity, which was associated with the dissolution and release of copper ions. The membrane obtained good performance as a desalinization membrane.…”

Section: Introductionmentioning

confidence: 99%

“…In this regard, a study of the bactericidal capacity and its relation with the ion release capacity from copper-modified TFC membranes is needed. Likewise, a comparison between the different copper species with variations in their ability to generate anti-biofouling properties on TFC membranes has not been made [ 21 , 22 , 28 ].…”

Section: Introductionmentioning

confidence: 99%

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Understanding the Phenomenon of Copper Ions Release from Copper-Modified TFC Membranes: A Mathematical and Experimental Methodology Using Shrinking Core Model

et al. 2020

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Type of metal and metal-oxide NPs added to modify Thin-Film Composites Reverse Osmosis Membranes (TFC-RO) can alter their anti-biofouling properties by changing the dissolution process. The development of a mathematical model can facilitate the selection of these NPs. This work consists of a mathematical and experimental methodology to understand copper-based NPs dissolution of three copper species incorporated into TFC-RO membranes: Cu-NPs, CuO-NPs and Cu-Oligomer complexes formed in situ during the polymerization process. Biocidal capacity of copper species into the membrane was evaluated using colony forming unit method (CFU) over E. coli. In addition, copper ion release kinetics for both NPs and modified membranes were determined. A model based on the shrinking core model (SCM) was validated and applied to determine the limiting rate step in the dissolution process and simulate the ion release kinetics. Fitted curves reached a good adjustment with the experimental data, demonstrating the SCM can be applied to predict ion release process for copper-based NPs in suspension and the modified membranes. All membranes reached similar inhibition rate >50%, however, differences in the dissolution level of copper-based NPs in membrane were noted, suggesting a dual-type effect that defined the copper toxicity into the membrane, associated to the dissolution capacity and ROS production.

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Section: Resultsmentioning

confidence: 99%