There are no files associated with this item.
Full metadata record
DC Field | Value | Language |
---|---|---|
dc.citation.endPage | 106 | - |
dc.citation.startPage | 97 | - |
dc.citation.title | CHEMICAL ENGINEERING JOURNAL | - |
dc.citation.volume | 255 | - |
dc.contributor.author | Dwivedi, Amarendra Dhar | - |
dc.contributor.author | Dubey, Shashi Prabha | - |
dc.contributor.author | Hokkanen, Sanna | - |
dc.contributor.author | Fallah, Rahimeh Naviri | - |
dc.contributor.author | Sillanpaa, Mika | - |
dc.date.accessioned | 2023-12-22T02:07:34Z | - |
dc.date.available | 2023-12-22T02:07:34Z | - |
dc.date.created | 2014-07-30 | - |
dc.date.issued | 2014-11 | - |
dc.description.abstract | The aim of the study was to develop green techniques to recover precious gold by the taurine-modified cellulose (TDAC samples) from the aqueous solution. Adsorption, followed by reduction offered a method for the recovery of ionic and zerovalent gold. The spherical gold nanoparticles (5. nm average size) were investigated in the nanoparticle-embedded gel. Potential rate controlling steps of chemical reactions are modeled by the best-fit of thermodynamic (an endothermic process), kinetic curve (pseudo second order), and isotherm (Sips and 34.5. mg/g Langmuir adsorption capacity) parameters. The pH (2-6) and competing heavy metals (Cd, Co, Cr, Ni, and As) showed least interference, however, gold recovery altered at the high ionic strength (as NaCl). A complexing agent (acidic thiourea) desorbed 86% of ionic gold and pyro-crystallization technique yielded 90% metallic gold. The characterization including X-ray photoelectron spectroscopy detected metallic gold on the surface of TDAC, supporting the adsorptive-reduction mechanism. Performance characteristic of TDAC to concentrate gold in various forms can be viewed as a controllable technique in the water treatment applications. | - |
dc.identifier.bibliographicCitation | CHEMICAL ENGINEERING JOURNAL, v.255, pp.97 - 106 | - |
dc.identifier.doi | 10.1016/j.cej.2014.06.017 | - |
dc.identifier.issn | 1385-8947 | - |
dc.identifier.scopusid | 2-s2.0-84903711203 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/5271 | - |
dc.identifier.url | http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84903711203 | - |
dc.identifier.wosid | 000341470800013 | - |
dc.language | 영어 | - |
dc.publisher | ELSEVIER SCIENCE SA | - |
dc.title | Recovery of gold from aqueous solutions by taurine modified cellulose: An adsorptive-reduction pathway | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Engineering, Environmental; Engineering, Chemical | - |
dc.relation.journalResearchArea | Engineering | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Tel : 052-217-1404 / Email : scholarworks@unist.ac.kr
Copyright (c) 2023 by UNIST LIBRARY. All rights reserved.
ScholarWorks@UNIST was established as an OAK Project for the National Library of Korea.