f83cc4fa78f22574a64ec7878cbd2d7d pmc_33673298.pdf 906e370c4c2c445fe439d71ec565720a7200637d pmc_33673298.pdf 096ece26b31a08de5add5674b4974c20d721dd7c425597f5a9bb05593d6cd7e0 pmc_33673298.pdf Title: Preparation and Characterization of Nanoparticle-Doped Polymer Inclusion Membranes. Application to the Removal of Arsenate and Phosphate from Waters Subject: Nanoparticle-doped polymer inclusion membranes (NP-PIMs) have been prepared and characterized as new materials for the removal of arsenate and phosphate from waters. PIMs are made of a polymer, cellulose triacetate (CTA), and an extractant, which interacts with the compound of interest. We have used the ionic liquid (IL) trioctylmethylammonium chloride (Aliquat 336) as the extractant and have investigated how the addition of nanoparticles can modify membrane properties. To this end, inorganic nanoparticles, such as ferrite (Fe3O4), SiO2 and TiO2, and multiwalled carbon nanotubes (MWCNTs), were blended with the polymer/extractant mixture. Scanning electron microscopy (SEM), infrared spectroscopy (FT-IR), and contact angle measurements have been used to characterize the material. Moreover, PIM stability was checked by measuring the mass loss during the experiments. Since Aliquat 336 acts as an anion exchanger, the NP-PIMs have been explored in two different applications: (i) as sorbent materials for the extraction of arsenate and phosphate anions; (ii) as an organic phase for the separation of arsenate and phosphate in a three-phase system. The presence of oleate-coated ferrite NP in the PIM formulation represents an improvement in the efficiency of NP-PIMs used as sorbents; nevertheless, a decrease in the transport efficiency for arsenate but not for phosphate was obtained. The ease with which the NP-PIMs are prepared suggests good potential for future applications in the treatment of polluted water. Future work will address three main aspects: firstly, the implementation of the Fe3O4-PIMs for the removal of As(V) in real water containing complex matrices; secondly, the study of phosphate recovery with other cell designs that allow large volumes of contaminated water to be treated; and thirdly, the investigation of the role of MWCNTs in PIM stability. Keywords: polymer inclusion membranes; nanoparticles; multiwalled carbon nanotubes; arsenate; phosphate; removal Author: Enriqueta Anticó, Ruben Vera, Francisco Vázquez, Clàudia Fontàs, Changyong Lu and Josep Ros Creator: LaTeX with hyperref Producer: pdfTeX-1.40.21 CreationDate: Mon Feb 22 11:38:34 2021 CET ModDate: Mon Feb 22 11:52:04 2021 CET Custom Metadata: no Metadata Stream: no Tagged: no UserProperties: no Suspects: no Form: none JavaScript: no Pages: 14 Encrypted: no Page size: 595.276 x 841.89 pts (A4) Page rot: 0 File size: 3205109 bytes Optimized: no PDF version: 1.7 name type encoding emb sub uni object ID ------------------------------------ ----------------- ---------------- --- --- --- --------- AHNCQQ+VnURWPalladioL Type 1 Custom yes yes no 10 0 NYOKAY+URWPalladioL-Ital Type 1 Custom yes yes no 15 0 XQBSJD+URWPalladioL-Bold Type 1 Custom yes yes no 20 0 EHEKTT+URWPalladioL-Roma Type 1 Custom yes yes no 24 0 NEBEKD+VnURWPalladioL-Bold Type 1 Custom yes yes no 28 0 YOTXCC+TimesNewRomanPS-BoldItalicMT Type 1C WinAnsi yes yes no 37 0 MCBCCI+SourceSansRoman-Regular Type 1C Custom yes yes no 59 0 MCBCCM+SourceSansRoman.613wght Type 1C Custom yes yes no 63 0 MCBCCO+SourceSansRoman-Bold Type 1C Custom yes yes no 67 0 HHBSSZ+CMSY10 Type 1 Builtin yes yes no 79 0 OVNEXW+EURM10 Type 1 Builtin yes yes no 83 0 CZKGAS+CMR10 Type 1 Builtin yes yes no 105 0 Jhove (Rel. 1.28.0, 2023-05-18) Date: 2024-10-02 03:28:12 CEST RepresentationInformation: pmc_33673298.pdf ReportingModule: PDF-hul, Rel. 1.12.4 (2023-03-16) LastModified: 2023-03-31 12:09:06 CEST Size: 3205109 Format: PDF Version: 1.7 Status: Well-Formed and valid SignatureMatches: PDF-hul MIMEtype: application/pdf PDFMetadata: Objects: 315 FreeObjects: 1 IncrementalUpdates: 0 DocumentCatalog: PageLayout: SinglePage PageMode: UseNone Outlines: Item: Title: Introduction Destination: section.1 Item: Title: Materials and Methods Destination: section.2 Children: Item: Title: Reagents and Solution Destination: subsection.2.1 Item: Title: Nanoparticles Destination: subsection.2.2 Item: Title: NP-PIMs Preparation Destination: subsection.2.3 Item: Title: NP-PIMs Characterization Destination: subsection.2.4 Item: Title: Procedures Destination: subsection.2.5 Children: Item: Title: NP-PIM Stability Measurements Destination: subsubsection.2.5.1 Item: Title: Sorption Experiments Destination: subsubsection.2.5.2 Item: Title: Transport Experiments Destination: subsubsection.2.5.3 Item: Title: Instruments and Apparatus Destination: subsection.2.6 Item: Title: Results and Discussion Destination: section.3 Children: Item: Title: NP-PIM Characterization Destination: subsection.3.1 Item: Title: Stability of the NP-PIMs Destination: subsection.3.2 Item: Title: NP-PIMs as Sorbents: Removal of Arsenate and Phosphate Destination: subsection.3.3 Item: Title: Selective Transport of Arsenate and Phosphate Destination: subsection.3.4 Item: Title: Conclusions Destination: section.4 Item: Title: References Destination: section.4 Info: Title: Preparation and Characterization of Nanoparticle-Doped Polymer Inclusion Membranes. Application to the Removal of Arsenate and Phosphate from Waters Author: Enriqueta Anticó, Ruben Vera, Francisco Vázquez, Clàudia Fontàs, Changyong Lu and Josep Ros Subject: Nanoparticle-doped polymer inclusion membranes (NP-PIMs) have been prepared and characterized as new materials for the removal of arsenate and phosphate from waters. PIMs are made of a polymer, cellulose triacetate (CTA), and an extractant, which interacts with the compound of interest. We have used the ionic liquid (IL) trioctylmethylammonium chloride (Aliquat 336) as the extractant and have investigated how the addition of nanoparticles can modify membrane properties. To this end, inorganic nanoparticles, such as ferrite (Fe3O4), SiO2 and TiO2, and multiwalled carbon nanotubes (MWCNTs), were blended with the polymer/extractant mixture. Scanning electron microscopy (SEM), infrared spectroscopy (FT-IR), and contact angle measurements have been used to characterize the material. Moreover, PIM stability was checked by measuring the mass loss during the experiments. Since Aliquat 336 acts as an anion exchanger, the NP-PIMs have been explored in two different applications: (i) as sorbent materials for the extraction of arsenate and phosphate anions; (ii) as an organic phase for the separation of arsenate and phosphate in a three-phase system. The presence of oleate-coated ferrite NP in the PIM formulation represents an improvement in the efficiency of NP-PIMs used as sorbents; nevertheless, a decrease in the transport efficiency for arsenate but not for phosphate was obtained. The ease with which the NP-PIMs are prepared suggests good potential for future applications in the treatment of polluted water. Future work will address three main aspects: firstly, the implementation of the Fe3O4-PIMs for the removal of As(V) in real water containing complex matrices; secondly, the study of phosphate recovery with other cell designs that allow large volumes of contaminated water to be treated; and thirdly, the investigation of the role of MWCNTs in PIM stability. Keywords: polymer inclusion membranes; nanoparticles; multiwalled carbon nanotubes; arsenate; phosphate; removal Creator: LaTeX with hyperref Producer: pdfTeX-1.40.21 CreationDate: Mon Feb 22 11:38:34 CET 2021 ModDate: Mon Feb 22 11:52:04 CET 2021 ID: 0x494bc422915623c29e7cadfbf51f90ed, 0x494bc422915623c29e7cadfbf51f90ed Filters: FilterPipeline: FlateDecode Fonts: Type1: Font: BaseFont: OVNEXW+EURM10 FontSubset: true FirstChar: 22 LastChar: 22 FontDescriptor: FontName: OVNEXW+EURM10 Flags: Symbolic FontBBox: -32, -243, 1060, 720 FontFile: true Font: BaseFont: XQBSJD+URWPalladioL-Bold FontSubset: true FirstChar: 3 LastChar: 122 FontDescriptor: FontName: XQBSJD+URWPalladioL-Bold Flags: Symbolic FontBBox: -152, -301, 1000, 935 FontFile: true EncodingDictionary: Differences: true Font: BaseFont: EHEKTT+URWPalladioL-Roma FontSubset: true FirstChar: 2 LastChar: 252 FontDescriptor: FontName: EHEKTT+URWPalladioL-Roma Flags: Symbolic FontBBox: -166, -283, 1021, 943 FontFile: true 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