Publication:
Recycling of precious materials by modified electrospun membranes

Simple item page
dc.contributor.authorAKTAŞ, SERDAR
dc.contributor.authorsZeytuncu-Gokoglu, Bihter; Tasdemir, Reyhan Sengur; Tanc, Beril; Aktas, Serdar; Koyuncu, Ismail
dc.date.accessioned2022-03-12T22:55:56Z
dc.date.available2022-03-12T22:55:56Z
dc.date.issued2021
dc.description.abstractIn this study, adsorption of gold (Au) and platinum (Pt) ions by electrospun polyacrylonitrile (PAN) natural keratin- modified membranes with high sulfur content and affinity toward precious metals were investigated. Different adsorption parameters, sorbent amount, contact time, temperature and pH of solution on adsorption (%) were studied in detail in batch sorption. First, a PAN nanofiber membrane was fabricated by an electrospinning technique as a low-cost method for producing nanofiber membranes and was then modified with the natural keratin (human hair) by hydrolysis in a basic solution. A PAN-keratin nanofiber membrane was characterized by Fourier-transform infrared spectroscopy and scanning electron microscopy (FTIR and SEM, respectively). FTIR verified the modification of PAN with keratin in which the spectrum of the resulting membrane showed significant changes, by using this modified nanofiber membrane, Au adsorption of 99% was achieved while the Pt adsorption showed a maximum of 37%. The reason for this finding may be because the electronegativity of Au is higher than Pt. When the adsorption isotherms were investigated, it was noted that the Langmuir isotherm fit better than the Freundlich isotherm. 1.0 M thiourea solution was used as a desorption reagent for both Au and Pt ions. Reusability studies showed that the adsorption capacity can remain up to 90 % after four times of usage. This finding indicates that the adsorption process of precious ions onto the electrospun membrane is a monolayer adsorption process.
dc.identifier.doi10.5004/dwt.2021.26748
dc.identifier.eissn1944-3986
dc.identifier.issn1944-3994
dc.identifier.urihttps://hdl.handle.net/11424/236858
dc.identifier.wosWOS:000651058900042
dc.language.isoeng
dc.publisherDESALINATION PUBL
dc.relation.ispartofDESALINATION AND WATER TREATMENT
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectElectrospinning
dc.subjectAdsorption
dc.subjectGold
dc.subjectPlatinum
dc.subjectNanofiber membrane
dc.subjectKeratin
dc.subjectADSORPTION
dc.subjectIONS
dc.subjectPLATINUM
dc.subjectOPTIMIZATION
dc.subjectCATALYSTS
dc.subjectRECOVERY
dc.subjectCHITOSAN
dc.subjectREMOVAL
dc.subjectWOOL
dc.titleRecycling of precious materials by modified electrospun membranes
dc.typearticle
dspace.entity.typePublication
local.avesis.id4bc2025b-582c-4fdd-9d71-debfdc2a6c4a
local.import.packageSS17
local.indexed.atWOS
local.indexed.atSCOPUS
local.journal.numberofpages9
oaire.citation.endPage447
oaire.citation.startPage439
oaire.citation.titleDESALINATION AND WATER TREATMENT
oaire.citation.volume211
relation.isAuthorOfPublication46159ed0-7c30-4490-a7db-8149b83bce7c
relation.isAuthorOfPublication.latestForDiscovery46159ed0-7c30-4490-a7db-8149b83bce7c

Files

Collections

Research Outputs