Nanoscale Iron Particles for Wastewater Decontamination

Panturu, Eugenia; Resources-ICPMRR, Radioactive; Panturu, Razvan Ioan; Jinescu, Gheorghiţa; Olteanu, Antoneta Filcenco; Radu, Aura Daniela; Honeywell, Romania

doi:10.21698/simi.2018.fp07

Cited by 6 publications

(12 citation statements)

References 10 publications

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“…The q m U values of FJSM-GAS-1 (196 mg/g) and FJSM-GAS-2 (144 mg/g) greatly exceed those of commercial resin products such as ARSEN-X np Purolite resin ( q m U = 47 mg/g), strong base AMBERSEP 920U Cl resin ( q m U = 50 mg/g), and Tulsion CH-96 ( q m U = 70 mg/g) . The q m Cs of FJSM-GAS-1 (164 mg/g) is also higher than that of commercial AMP-PAN ( q m Cs = 81 mg/g), which is currently marketed by UOP as IONSIV IE-910 .…”

Section: Resultsmentioning

confidence: 97%

Efficient Removal of [UO₂]²⁺, Cs⁺, and Sr²⁺ Ions by Radiation-Resistant Gallium Thioantimonates

Feng¹,

et al. 2018

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Unconventional ion exchangers can achieve efficient removal of [UO], Cs, and Sr ions from complex aqueous solutions and are of great interest for environmental remediation. We report two new gallium thioantimonates, [MeNH][GaSbS]·HO (FJSM-GAS-1) and [EtNH][GaSbS]·HO (FJSM-GAS-2), which present excellent ion exchange properties for [UO], Cs, and Sr ions. They exhibit high ion exchange capacities for [UO], Cs, and Sr ions ( q = 196 mg/g, q = 164 mg/g, and q = 80 mg/g for FJSM-GAS-1, q = 144 mg/g for FJSM-GAS-2) and short equilibrium times for [UO] ion exchange (5 min for FJSM-GAS-1 and 15 min for FJSM-GAS-2, respectively). Both compounds display active ion exchange with [UO] in the pH range of 2.9-10.5. Moreover, the sulfide compounds could maintain high distribution coefficients K even in the presence of excess Na, Ca, and HCO. The distribution coefficient K of 6.06 × 10 mL/g exhibited by FJSM-GAS-1 is the highest among the reported U adsorbents. The [UO]-laden products can be recycled by conveniently eluting the uranium with a low-cost method. These advantages combined with facile synthesis, as well as β and γ radiation resistance, make FJSM-GAS-1 and FJSM-GAS-2 promising for selective separations in nuclear waste remediation.

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Section: Resultsmentioning

confidence: 97%

Efficient Removal of [UO₂]²⁺, Cs⁺, and Sr²⁺ Ions by Radiation-Resistant Gallium Thioantimonates

Feng¹,

et al. 2018

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“…

{3Fe}^{+ 3} + {BH}_{4}^{-} + {3H}_{2} normalO + {1e}^{-} \to {3Fe}^{0} + H_{3} {BO}_{3} + {7H}^{+}

The Fe 0 formed received H + ions in a reversible manner to liberate H 2 gas. [ 31 ]

{2Fe}^{0} + {6H}^{+} \to {2Fe}^{+ 3} + {3H}_{2}

The entire procedure for the synthesis of CA@Fe 0 and ACA@Fe 0 NPs membranes are depicted in the inset of scheme 1.…”

Section: Methodsmentioning

confidence: 99%

“…The Fe 0 formed received H + ions in a reversible manner to liberate H 2 gas. [31] 2Fe 0 + 6H + ! 2Fe…”

Section: Synthesis Of Ca@fe 0 and Aca@fe 0 Membranesmentioning

confidence: 99%

Cellulose acetate composite films fabricated with zero‐valent iron nanoparticles and its use in the degradation of persistent organic pollutants

Johny

Ahmad

Shah

et al. 2020

Applied Organom Chemis

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Cellulose acetate (CA), and CA blended with Nicotiana tabacum ash (ACA) membranes have synthesized and fabricated with zero-valent Fe NPs (ZVI) and named as CA@Fe 0 and ACA@Fe 0. The as-synthesized membranes were inspected for the removal and detoxification of toxic organic pollutants. Comparative studies of CA@Fe 0 and ACA@Fe 0 NPs were investigated for five model pollutants, such as 4-nitrophenol (4NP), methyl orange (MO), Congo red (CR), methylene blue (MB), and bromocresol green (BCG). The kinetic model indicated that the apparent rate constant K app value of ACA@Fe 0 was highest for all model pollutants compared to CA@Fe 0 NPs. The K app value is derived from pseudo-first-order kinetics. The K app value of MO discoloration was 8.17 × 10 −1 min −1 with ACA@Fe 0 which is highest than CA@Fe 0 (3.08 × 10 −1 min −1). The turnover frequency (TOF) was highest for ACA@Fe 0 for all the pollutants compared to CA@Fe 0 and the highest TOF value was found for CR dye with ACA@Fe 0 which is 0.523 h −1. Both the membranes also showed promising antibacterial activity against Salmonella typhi. Furthermore, CA, ACA membrane and CA@Fe 0 and ACA@Fe 0 NPs were characterized through FESEM, EDS, XRD, FTIR and TGA analysis.

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“…The fractions are weighed on an analytical balance type Precisa XT220A (manufactured by Precisa Gravimetrics AG Moosmattstrasse 32 CH 8953 Dietikon). The mechanical resistance is expressed by equation 2 [28]:…”

Section: Experimental Methodologymentioning

confidence: 99%

“…In recent years the research regarding the application of ultrasounds in hydrometallurgy, in dissolution operations [24][25][26][27][28][29][30][31][32][33][34][35][36][37], ionic exchange [38][39][40][41][42][43][44][45][46][47], and solvent extraction [48][49][50][51][52][53] has expanded.…”

Section: Introductionmentioning

confidence: 99%

The influence of ultrasounds on the process of uranium desorption

et al. 2017

Self Cite

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In the present paper, we have studied the intensification of the desorption process of the complex anions of uranium U(VI), from ion exchange resins under the action of the ultrasonic field. The dynamics of uranium desorption from the anionic resins Purolite A600U/3472 and PM 611 was analyzed, both in standard conditions and with ultrasounds. The use of ultrasounds leads to the substantial growth of desorption kinetics and of the uranium recovery degree. The tests for stability of the resin grains size, mechanical resistance and the capacity of loading with uranium, after the repeated action of the ultrasounds field, emphasized the physical-chemical stability of resins used in the experiment (loading capacity of untreated resin 30.36 mgU/g resin and treated in continuous ultrasonic field 30.85 mgU/g resin).

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Nanoscale Iron Particles for Wastewater Decontamination

Cited by 6 publications

References 10 publications

Efficient Removal of [UO₂]²⁺, Cs⁺, and Sr²⁺ Ions by Radiation-Resistant Gallium Thioantimonates

Efficient Removal of [UO₂]²⁺, Cs⁺, and Sr²⁺ Ions by Radiation-Resistant Gallium Thioantimonates

Cellulose acetate composite films fabricated with zero‐valent iron nanoparticles and its use in the degradation of persistent organic pollutants

The influence of ultrasounds on the process of uranium desorption

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Nanoscale Iron Particles for Wastewater Decontamination

Cited by 6 publications

References 10 publications

Efficient Removal of [UO2]2+, Cs+, and Sr2+ Ions by Radiation-Resistant Gallium Thioantimonates

Efficient Removal of [UO2]2+, Cs+, and Sr2+ Ions by Radiation-Resistant Gallium Thioantimonates

Cellulose acetate composite films fabricated with zero‐valent iron nanoparticles and its use in the degradation of persistent organic pollutants

The influence of ultrasounds on the process of uranium desorption

Contact Info

Product

Resources

About

Efficient Removal of [UO₂]²⁺, Cs⁺, and Sr²⁺ Ions by Radiation-Resistant Gallium Thioantimonates

Efficient Removal of [UO₂]²⁺, Cs⁺, and Sr²⁺ Ions by Radiation-Resistant Gallium Thioantimonates