Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/112106
Title: Rare Earth Group Separation after Extraction Using Sodium Diethyldithiocarbsamate/Polyvinyl Chloride from Lamprophyre Dykes Leachate
Authors: Allam, E. M.
Lashen, T. A.
El-Enein, S. A. A.
Hassanin, M. A.
Sakr, A. K.
Cheira, M. F.
Almuqrin, A.
Hanfi, M. Y.
Sayyed, M. I.
Issue Date: 2022
Publisher: MDPI
MDPI AG
Citation: Rare Earth Group Separation after Extraction Using Sodium Diethyldithiocarbsamate/Polyvinyl Chloride from Lamprophyre Dykes Leachate / E. M. Allam, T. A. Lashen, S. A. A. El-Enein et al. // Materials. — 2022. — Vol. 15. — Iss. 3. — 1211.
Abstract: This study presents the first application of sodium diethyldithiocarbamate/polyvinyl chloride (DdTC/PVC) as a novel adsorbent for rare earth element (REE) sorption from leach liquors. DdTC/PVC has higher adsorption properties than other sorbents, the synthesis of DdTC/PVC is more accessible than other resins, and it is considered a more affordable sorbent. The three-liquid-phase extraction technique (TLPE) was applied to separate REEs into light, middle, and heavy rare earth elements as groups. The TLPE is an excellent achievable technique in the separation of REEs. DdTC/PVC was prepared as a sorbent to sorb rare-earth ions in chloride solution. It was described by XRD, SEM, TGA, and FTIR. The factors pH, initial rare-earth ion concentration, contact time, and DdTC/PVC dose were also analyzed. The ideal pH was 5.5, and the ideal equilibration time was found to be 45 min. The rare-earth ion uptake on DdTC/PVC was 156.2 mg/g. The rare-earth ion sorption on DdTC/PVC was fitted to Langmuir and pseudo-2nd-order models. The rare-earth ions’ thermodynamic adsorption was spontaneous and exothermic. In addition, rare-earth ion desorption from the loaded DdTC/PVC was scrutinized using 1 M HCl, 45 min time of contact, and a 1:60 S:L phase ratio. The obtained rare earth oxalate concentrate was utilized after dissolving it in HCl to extract and separate the RE ions into three groups—light (La, Ce, Nd, and Sm), middle (Gd, Ho, and Er), and heavy (Yb, Lu, and Y)—via three-liquid-phase extraction (TLPE). This technique is simple and suitable for extracting REEs. © 2022 by the authors. Licensee MDPI, Basel, Switzerland.
Keywords: DESORP-TION
POLYVINYL CHLORIDE
RARE EARTH IONS
RE CONCENTRATE
SODIUM DIETHYLDITHIOCARBAMATE
SORPTION
CHLORINE COMPOUNDS
EXTRACTION
METAL IONS
POLYVINYL CHLORIDES
RARE EARTH ELEMENTS
RARE EARTHS
DESORP-TION
DIETHYLDITHIOCARBAMATE
EXTRACTION TECHNIQUES
GROUP SEPARATION
LAMPROPHYRE
RARE EARTH IONS
RARE-EARTHS
RE CONCENTRATE
SODIUM DIETHYLDITHIOCARBAMATE
THREE-LIQUID-PHASE EXTRACTIONS
SORPTION
URI: http://hdl.handle.net/10995/112106
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85124256670
PURE ID: 29634387
ISSN: 1996-1944
metadata.dc.description.sponsorship: The authors express their gratitude to the Princess Nourah bint Abdulrahman University Researchers Supporting Project (PNURSP2022R2), Princess Nourah bint Abdulrahman University, Riyadh, Saudi ArabiaAcknowledgments: The authors express their gratitude to the Princess Nourah bint Abdulrahman University Researchers Supporting Project (PNURSP2022R2), Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia.
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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