efc071ceebff9e2979087791e1944a2f water_a2022v14n11p1796.pdf 578fcf9cdce569ba662e6209d5d322d89475f561 water_a2022v14n11p1796.pdf 1d1afcdb46d73619a6ede5aa7c9084e14003a6884a9ca55061292b821064f037 water_a2022v14n11p1796.pdf Title: Coffee Husk and Lignin Revalorization: Modification with Ag Nanoparticles for Heavy Metals Removal and Antifungal Assays Subject: This study presents the use of the modified coffee husk and coffee lignin as sorbents in the heavy metal ions sorption of Pb(II), Cd(II), Cr(III), and Cu(II) in an aqueous solution. The modification of sorbents was carried out by the impregnation method, using silver nitrate (AgNO3) and sodium borohydride (NaBH4) as a nanoparticles’ (NPs) precursor, and reducing agent, respectively. The obtained nanocomposite material was morphologically characterized by electron microscopy. In addition, an evaluation of metal ions’ sorption, pseudo-first-order, and pseudo-second-order kinetics modeling was performed. Finally, antifungal activity was evaluated on different Candida species. Coffee and lignin modified with AgNPs increased the extraction capacity with the highest sorption for Pb ions with 2.56 mg/g and 1.44 mg/g, respectively. Keywords: coffee husk; lignin; heavy metals; silver nanoparticles; sorption; antifungal activity Author: Daniel Fernando Guevara-Bernal, Marlon Yesid Cáceres Ortíz, Jorge Andrés Gutiérrez Cifuentes, Julio Bastos-Arrieta, Cristina Palet and Angélica María Candela Creator: LaTeX with hyperref Producer: pdfTeX-1.40.21 CreationDate: Tue Jun 7 15:44:45 2022 CEST ModDate: Tue Jun 7 15:47:52 2022 CEST Tagged: no UserProperties: no Suspects: no Form: none JavaScript: no Pages: 17 Encrypted: no Page size: 595.276 x 841.89 pts (A4) Page rot: 0 File size: 5628456 bytes Optimized: no PDF version: 1.7 name type encoding emb sub uni object ID ------------------------------------ ----------------- ---------------- --- --- --- --------- IYDCBB+VnURWPalladioL Type 1 Custom yes yes no 10 0 PCEMTA+URWPalladioL-Bold Type 1 Custom yes yes no 15 0 FNOIDC+URWPalladioL-Roma Type 1 Custom yes yes no 20 0 OQBLSW+URWPalladioL-Ital Type 1 Custom yes yes no 24 0 IOJCNK+VnURWPalladioL-Bold Type 1 Custom yes yes no 28 0 FSIJLB+TimesNewRomanPS-BoldItalicMT Type 1C WinAnsi yes yes no 46 0 SCAGSR+CMSY10 Type 1 Builtin yes yes no 68 0 OVNEXW+EURM10 Type 1 Builtin yes yes no 72 0 GIGFZE+CMR10 Type 1 Builtin yes yes no 79 0 RAYMXS+URWPalladioL-BoldItal Type 1 Custom yes yes no 122 0 DMNREI+VnURWPalladioL-Italic Type 1 Custom yes yes no 149 0 Jhove (Rel. 1.22.1, 2019-04-17) Date: 2023-05-05 02:31:26 CEST RepresentationInformation: water_a2022v14n11p1796.pdf ReportingModule: PDF-hul, Rel. 1.12.1 (2019-04-17) LastModified: 2022-06-21 12:07:13 CEST Size: 5628456 Format: PDF Version: 1.7 Status: Well-Formed and valid SignatureMatches: PDF-hul MIMEtype: application/pdf PDFMetadata: Objects: 355 FreeObjects: 1 IncrementalUpdates: 0 DocumentCatalog: PageLayout: SinglePage PageMode: UseNone Outlines: Item: Title: Introduction Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@44c8afef Item: Title: Materials and Methods Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@7b69c6ba Children: Item: Title: Chemical Reagents and Solutions Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@46daef40 Item: Title: Coffee Husk Preparation and Lignin Obtention Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@12f41634 Item: Title: Sorbents Modification with AgNPs Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@13c27452 Item: Title: Sorption Experiments Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@262b2c86 Item: Title: Kinetic Modeling Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@371a67ec Item: Title: Antifungal Assays Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@5ed828d Item: Title: Infrared Spectroscopy Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@50d0686 Item: Title: Electron Microscopy Characterization Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@7a3d45bd Item: Title: Results and Discussion Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@1e7c7811 Children: Item: Title: Characterization of Sorbents Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@77ec78b9 Item: Title: Sorption Kinetics of Raw Materials and Nanocomposite Materials Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@1a3869f4 Item: Title: Evaluation of Sorption Capacity Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@a38d7a3 Item: Title: Kinectic Modeling Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@77f99a05 Item: Title: Antifungal Assays Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@63440df3 Item: Title: Conclusions Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@3aeaafa6 Item: Title: References Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@76a3e297 Info: Title: Coffee Husk and Lignin Revalorization: Modification with Ag Nanoparticles for Heavy Metals Removal and Antifungal Assays Author: Daniel Fernando Guevara-Bernal, Marlon Yesid Cáceres Ortíz, Jorge Andrés Gutiérrez Cifuentes, Julio Bastos-Arrieta, Cristina Palet and Angélica María Candela Subject: This study presents the use of the modified coffee husk and coffee lignin as sorbents in the heavy metal ions sorption of Pb(II), Cd(II), Cr(III), and Cu(II) in an aqueous solution. The modification of sorbents was carried out by the impregnation method, using silver nitrate (AgNO3) and sodium borohydride (NaBH4) as a nanoparticles’ (NPs) precursor, and reducing agent, respectively. The obtained nanocomposite material was morphologically characterized by electron microscopy. In addition, an evaluation of metal ions’ sorption, pseudo-first-order, and pseudo-second-order kinetics modeling was performed. Finally, antifungal activity was evaluated on different Candida species. Coffee and lignin modified with AgNPs increased the extraction capacity with the highest sorption for Pb ions with 2.56 mg/g and 1.44 mg/g, respectively. 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