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Title: Removal of iodine (I- and IO3-) from aqueous solutions using CoAl and NiAl layered double hydroxides

Journal Article · · Chemical Engineering Journal

The treatment of radioactive iodine released from nuclear power plants and radiological waste disposal sites is of great concern due to its high mobility and toxicity. In particular, iodide (I-) and iodate (IO3-) are the major iodine species of concern under various pHs and groundwater conditions. Herein, CoAl and NiAl layered double hydroxides (LDHs) were synthesized by a hydrothermal method and investigated to identify the removal mechanisms and efficiencies of both I- and IO3-. Both CoAl and NiAl LDHs exhibited rapid iodine removal processes within 20 min, following the pseudo-second-order model via ion-exchange with parent NO3- anion in the LDHs. The CoAl LDH’s maximum sorption capacities for I- and IO3- were about 1.67 and 2.16 mmol g-1, respectively, whereas for the NiAl LDH, these were about 2.10 and 2.26 mmol g-1, and they followed the Langmuir isotherm model. Interestingly, both the CoAl and NiAl LDHs showed a preferential ion-exchange affinity for IO3- over I-, which was attributed to the structural similarity of the IO3- and NO3- as well as new formation of secondary Co(or Ni)(IO3)2·2H2O phases. In addition, a desorption study indicated that the selectivity order was SO42- = IO3- = OH- > HCO3- > Cl- > NO3- = I- and demonstrated the higher retention of the IO3- than I- anion. This study provides insights into promising iodine sorbents and the different removal mechanisms of I- and IO3- using CoAl and NiAl LDHs.

Research Organization:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC05-76RL01830
OSTI ID:
1829684
Report Number(s):
PNNL-SA-167297
Journal Information:
Chemical Engineering Journal, Vol. 430, Issue Part 1
Country of Publication:
United States
Language:
English

References (61)

Facile synthesis of mesoporous Fe-based MOFs loading bismuth with high speed adsorption of iodide from solution journal January 2019
Nanometer mixed-valence silver oxide enhancing adsorption of ZIF-8 for removal of iodide in solution journal January 2019
Hierarchically porous bismuth oxide/layered double hydroxide composites: Preparation, characterization and iodine adsorption journal February 2017
Iodine Capture Using Zr-Based Metal–Organic Frameworks (Zr-MOFs): Adsorption Performance and Mechanism journal April 2020
Visualization of Iodine Chemisorption Facilitated by Aryl C–H Bond Activation journal June 2019
Iodine immobilization by materials through sorption and redox-driven processes: A literature review journal May 2020
Nanostructured MgFe and CoCr layered double hydroxides for removal and sequestration of iodine anions journal January 2020
Capture of I131 from medical-based wastewater using the highly effective and recyclable adsorbent of g-C3N4 assembled with Mg-Co-Al-layered double hydroxide journal May 2020
Radioiodine Biogeochemistry and Prevalence in Groundwater journal August 2014
Population exposures to I-131 releases from Hanford Nuclear Reservation and preterm birth, infant mortality, and fetal deaths journal January 2002
Chemical Durability and Dissolution Kinetics of Iodoapatite in Aqueous Solutions journal January 2019
Iodine speciation in cementitious environments journal April 2019
Evaluation of Getter Metals in Na–Al–Si–O Aerogels and Xerogels for the Capture of Iodine Gas journal April 2020
Novel synthesis of Bi-Bi2O3-TiO2-C composite for capturing iodine-129 in off-gas journal March 2019
Controllable Synthesis of Porous Cu-BTC@polymer Composite Beads for Iodine Capture journal October 2019
The rapid removal of iodide from aqueous solutions using a silica-based ion-exchange resin journal February 2019
A method for properties evaluation of activated charcoal sorbents in iodine capture under dynamic conditions journal April 2019
Enhanced removal of iodide ions by nano Cu2O/Cu modified activated carbon from simulated wastewater with improved countercurrent two-stage adsorption journal June 2018
A 3D Covalent Organic Framework with Exceptionally High Iodine Capture Capability journal December 2017
Iodine Adsorption in Metal Organic Frameworks in the Presence of Humidity journal March 2018
Rosette-like Layered Double Hydroxides: Adsorbent Materials for the Removal of Anionic Pollutants from Water journal July 2019
Sorption of iodide (I−) from aqueous solution using Mg/Al layered double hydroxides journal August 2017
Zr-containing layered double hydroxides: Synthesis, characterization, and evaluation of thermodynamic properties journal January 2018
Effects of layered double hydroxides incorporation on carbonation resistance of cementitious materials journal January 2019
A review of the removal of anions and oxyanions of the halogen elements from aqueous solution by layered double hydroxides journal March 2014
RedOx-controlled sorption of iodine anions by hydrotalcite composites journal January 2016
Competition between monovalent and divalent anions for calcined and uncalcined hydrotalcite: anion exchange and adsorption sites journal June 1996
Anion-Exchange Properties of Hydrotalcite-Like Compounds journal January 1983
Impregnation-induced memory effect of thermally activated layered double hydroxides journal June 1998
Iodine-129 and Iodine-127 Speciation in Groundwater at the Hanford Site, U.S.: Iodate Incorporation into Calcite journal August 2013
Simultaneous and efficient removal of fluoride and phosphate by Fe-La composite: Adsorption kinetics and mechanism journal July 2018
Bio-inspired, high, and fast adsorption of tetracycline from aqueous media using Fe3O4-g-CN@PEI-β-CD nanocomposite: Modeling by response surface methodology (RSM), boosted regression tree (BRT), and general regression neural network (GRNN) journal April 2020
A highly effective, recyclable, and novel host-guest nanocomposite for Triclosan removal: A comprehensive modeling and optimization-based adsorption study journal September 2019
Layer structured graphite oxide as a novel adsorbent for humic acid removal from aqueous solution journal May 2009
Adsorption of phosphate by sediments in a eutrophic lake: Isotherms, kinetics, thermodynamics and the influence of dissolved organic matter journal February 2019
EXAFS studies on adsorption irreversibility of Zn(II) on TiO2: Temperature dependence journal March 2008
Iodide removal using LDH technology journal July 2016
Ionic radii in aqueous solutions journal December 1988
Reappraisal of thermochemical radii for complex ions journal September 1979
The Molar Volumes of Ions in Solution, Part 7. Electrostriction and Hydration Numbers of Aqueous Polyatomic Anions at 25 °C journal February 2014
Structural Cohesion of M II -M III Layered Double Hydroxides Crystals: Electrostatic Forces and Cationic Polarizing Power journal August 2012
Role of Transition Metals in Layered Double Hydroxides for Differentiating the Oxygen Evolution and Nonenzymatic Glucose Sensing journal January 2020
Remarkable Bifunctional Oxygen and Hydrogen Evolution Electrocatalytic Activities with Trace-Level Fe Doping in Ni- and Co-Layered Double Hydroxides for Overall Water-Splitting journal November 2018
Synthesis and characterization of modified hydrotalcites and their ion exchange characteristics in chloride-rich simulated concrete pore solution journal March 2014
Intercomparison of surface analysis of thin aluminium oxide films journal November 1990
Solar absorptance of copper–cobalt oxide thin film coatings with nano-size, grain-like morphology: Optimization and synchrotron radiation XPS studies journal June 2013
Resolving surface chemical states in XPS analysis of first row transition metals, oxides and hydroxides: Cr, Mn, Fe, Co and Ni journal January 2011
X-ray photoelectron spectroscopic chemical state quantification of mixed nickel metal, oxide and hydroxide systems journal April 2009
New interpretations of XPS spectra of nickel metal and oxides journal May 2006
X-ray photoelectron spectroscopic studies of some iodine compounds journal January 1976
Enhanced photoelectrochemical and photocatalytic performance of iodine-doped titania nanotube arrays journal January 2015
Synthesis and characterization of iodosodalite journal March 2017
Controlled Fabrication of K 2 Ti 8 O 17 Nanowires for Highly Efficient and Ultrafast Adsorption toward Methylene Blue journal November 2019
Ni/Fe and Mg/Fe layered double hydroxides and their calcined derivatives: preparation, characterization and application on textile dyes removal journal July 2017
Core-shell ZnO@Cu2O encapsulated Ag NPs nanocomposites for photooxidation-adsorption of iodide anions under visible light journal May 2021
Cu-Zn bimetal ZIFs derived nanowhisker zero-valent copper decorated ZnO nanocomposites induced oxygen activation for high-efficiency iodide elimination journal August 2021
Cu/Cu2O-immobilized cellulosic filter for enhanced iodide removal from water journal May 2021
Sorption and removal of iodate from aqueous solution using dried duckweed (Landoltia punctata) powder journal April 2018
Nanosheets-built flowerlike micro/nanostructured Bi 2 O 2.33 and its highly efficient iodine removal performances journal April 2016
Efficient removal and immobilization of radioactive iodide and iodate from aqueous solutions by bismuth-based composite beads journal December 2021
Factors controlling mobility of 127I and 129I species in an acidic groundwater plume at the Savannah River Site journal September 2011