Inorganic<b>Ba–Sn</b>nanocomposite materials for sulfate sequestration from complex aqueous solutions

Johnson, Isaac; Chatterjee, Sayandev; Hall, Gabriel B.; Burton, Sarah D.; Campbell, Emily L.; Conroy, Michele; Du, Yingge; Fujimoto, Meghan S.; Varga, Tamás; Kruger, Albert A.; Levitskaia, Tatiana G.

doi:10.1039/c7en01241a

Cited by 6 publications

(3 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Among the sulfate minerals, barite (BaSO 4 ) is the most thermally stable and has excellent chemical durability. A series of Ba-Sn nanocomposite materials (e.g., BaSn(OH) 6 , Ba 2 Sn 2 O 2 (OH) 4 ⋅10H 2 O) have recently been prepared using hydrothermal synthesis by Johnson et al 19 to sequester sulfate anions as BaSO 4 from simulated Hanford LAW solutions. In our previous work, 20,21 SO 4 2− ions present in the simulated HLW as Na 2 SO 4 can be sequestrated in the form of BaSO 4 by adding Ba(NO 3 ) 2 solution, and the formation of the yellow phase can be effectively reduced during vitrification.…”

Section: Introductionmentioning

confidence: 99%

“…Among the sulfate minerals, barite (BaSO 4 ) is the most thermally stable and has excellent chemical durability. A series of Ba–Sn nanocomposite materials (e.g., BaSn(OH) 6 , Ba 2 Sn 2 O 2 (OH) 4 ·10H 2 O) have recently been prepared using hydrothermal synthesis by Johnson et al 19 . to sequester sulfate anions as BaSO 4 from simulated Hanford LAW solutions.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

In situ study of microstructural evolution of borosilicate glass–sulfate mixture at high temperatures

Lian,

Yao,

Jiang

et al. 2024

J Am Ceram Soc.

View full text Add to dashboard Cite

Microstructural evolution of borosilicate glass–sulfate (BaSO4 or Na2SO4) mixture was observed in situ using a high‐temperature confocal scanning laser microscope. The phase compositions and sulfate retention of the mixture at different temperatures were also examined. The results indicate that for the glass–BaSO4 sample (abbreviated as BS), the borosilicate glass begins to melt at about 900°C, and the triangular BaSO4 crystals grow obviously between 900°C and 1100°C. At temperatures above 1100°C, the BaSO4 crystals gradually melt and decompose. For the glass–Na2SO4 sample (abbreviated as NS), strip‐shaped BaSO4 crystals begin to form at about 820°C after the borosilicate glass melting, and then gradually melt with further increasing temperature. When the temperature increases to 1000°C, the upper layer of the NS sample possesses Na2SO4, LiNaSO4, and BaSO4 phases, while the lower layer possesses an amorphous phase. Moreover, the SO3 retention in the BS sample remains almost unchanged with temperature increases from 900°C to 1100°C, and then decreases with further increasing temperature. The SO3 retention retained in the NS sample decreases rapidly at temperatures above 900°C. These findings can provide a guidance for vitrifying sulfur‐rich high‐level liquid waste.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

In situ study of microstructural evolution of borosilicate glass–sulfate mixture at high temperatures

Lian,

Yao,

Jiang

et al. 2024

J Am Ceram Soc.

View full text Add to dashboard Cite

show abstract

“…In the past several decades, there has been extensive focus in the field of anion recognition and sensing due to their importance in biological functioning and environmental processes. − Porous frameworks based on metal organic frameworks, ,− layered-double hydroxides, ,− zeolitic imidazole frameworks, − and covalent organic frameworks to a limited extent, − have been used as probes that can selectively recognize and capture anions due to preferential interactions between the anions of interest and the pore surfaces. These materials have been demonstrated to preferentially select anions of interest through carefully tailoring the sizes of their pores, channels or interlayer spacing structures, and specific affinities and by decorating the pore surfaces with functionalities .…”

Section: Introductionmentioning

confidence: 99%

Redox-Based Electrochemical Affinity Sensor for Detection of Aqueous Pertechnetate Anion

Chatterjee

Fujimoto

et al. 2020

ACS Sens.

Self Cite

View full text Add to dashboard Cite

Rapid, selective, and in situ detection of pertechnetate (TcO 4 − ) in multicomponent matrices consisting of interfering anions such as the ubiquitous NO 3 − and Cl − or the isostructural CrO 4 2− is challenging. Present sensors lack the selectivities to exclude these interferences or the sensitivities to meet detection limits that are lower than the drinking water standards across the globe. This work presents an affinity-based electrochemical sensor for TcO 4 − detection that relies on selective reductive precipitation of aqueous TcO 4 − induced by a 1,4-benzenedimethanethiol capture probe immobilized on an electrode platform. This results in a direct decrease in the electron transfer current, the magnitude of the decrease being proportional to the amount of TcO 4 − added. Using this approach, a detection limit of 1 × 10 −10 M was achieved, which is lower than the drinking water standard of 5.2 × 10 −10 M set by United States Environmental Protection Agency. The proposed approach shows selectivity to the TcO 4 − anion, allowing detection of TcO 4 − from a multicomponent groundwater sample obtained from a well at the Hanford site in Washington (well 299-W19-36) that also contained NO 3 − , Cl − , and CrO 4 2− , without discernably affecting the detection limits.

show abstract

Modification of Y‐Zeolite with Zirconium for Enhancing the Active Component Loading: Preparation and Sulfate Adsorption Performance of ZrO(OH)₂/Y‐Zeolite

Zhang

Wang

et al. 2019

ChemistrySelect

View full text Add to dashboard Cite

Nowadays, several techniques have been utilized to remove sulfate from industrial sewage. The method using ZrO(OH)2 to adsorb sulfate is highly efficient and environmentally friendly, however, nano‐powdered ZrO(OH)2 is hard to be recycled owing to its great loss in the adsorption process, which brings enormous difficulties to industrial applications. In this research, to prevent adsorbents from losing, Y‐zeolite was modified with zirconium, including the incorporation of zirconium as heteroatoms into zeolite frameworks and ion‐exchange of Zr4+ into the cages of zeolite, and then used as carrier to load ZrO(OH)2 to fabricate adsorbent via the stepwise impregnation treatment. The as‐prepared supported adsorbent ZrO(OH)2/Y‐zeolite has a high SO42− adsorption capacity, a strong adsorption selectivity to SO42− and good adsorption‐regeneration circulation performances. The saturated SO42− adsorption capacity of 284.22 mg/g can be obtained under the following adsorption conditions: SO42− concentration of 10 g/L, the pH value of 1.5, the temperature of 25 °C. After five adsorption‐regeneration circulations, its adsorption capacity has decreased only about 10%. The adsorption‐ desorption of sulfate over ZrO(OH)2/Y‐zeolite adsorbent proceeds according to the ion‐exchange mechanism between sulfate and the surface hydroxyl groups.

show abstract

InorganicBa–Snnanocomposite materials for sulfate sequestration from complex aqueous solutions

Abstract: Novel functionalBa–Snnanomaterials for separation orin situsequestration of sulfate from complex aqueous carbonate solutions were developed.

Cited by 6 publications

References 53 publications

In situ study of microstructural evolution of borosilicate glass–sulfate mixture at high temperatures

In situ study of microstructural evolution of borosilicate glass–sulfate mixture at high temperatures

Redox-Based Electrochemical Affinity Sensor for Detection of Aqueous Pertechnetate Anion

Modification of Y‐Zeolite with Zirconium for Enhancing the Active Component Loading: Preparation and Sulfate Adsorption Performance of ZrO(OH)₂/Y‐Zeolite

Contact Info

Product

Resources

About

InorganicBa–Snnanocomposite materials for sulfate sequestration from complex aqueous solutions

Abstract: Novel functionalBa–Snnanomaterials for separation orin situsequestration of sulfate from complex aqueous carbonate solutions were developed.

Cited by 6 publications

References 53 publications

In situ study of microstructural evolution of borosilicate glass–sulfate mixture at high temperatures

In situ study of microstructural evolution of borosilicate glass–sulfate mixture at high temperatures

Redox-Based Electrochemical Affinity Sensor for Detection of Aqueous Pertechnetate Anion

Modification of Y‐Zeolite with Zirconium for Enhancing the Active Component Loading: Preparation and Sulfate Adsorption Performance of ZrO(OH)2/Y‐Zeolite

Contact Info

Product

Resources

About

Modification of Y‐Zeolite with Zirconium for Enhancing the Active Component Loading: Preparation and Sulfate Adsorption Performance of ZrO(OH)₂/Y‐Zeolite