Application of nanofiltration membrane and ethyleneimine oligomer mixture for selective separation of Strontium from a simulated nuclear waste solution

Sujish, D.; Mohanakrishnan, G.; Sharma, Bal Krishan; Babu, C. Anand; Rajan, K.K.

doi:10.1080/19443994.2013.808789

Cited by 9 publications

(4 citation statements)

References 10 publications

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“…Better results were obtained by using MWCNTs-interconnected GO hybrid membranes [ 16 ]. Ethylenimine oligomer mixture can be used for increasing the strontium rejection by complexing the oligomer with wastewater before using the nanofiltration [ 17 ]; also, new adsorbents derived from almond green hull were used for enhancing the separation of strontium [ 18 ], To decrease fouling caused by scales formed from divalent cations such as (Mg 2+ , Ca 2+ , Sr 2+ , and Ba 2+ ), polyelectrolyte multilayer NF can be employed as a preliminary step before reverse osmosis [ 19 ]. The filtration efficiency of TiO 2 -doped ZrO 2 nanofiltration membranes reached 99.2% [ 20 ]; Shaban et al designed a nanofiltration membrane made of polyethersulfone (PES) and titanium dioxide nanoribbons/multi-walled carbon nanotube nanocomposite, which had high efficiency in water desalination, with a NaCl salt rejection rate of 99% [ 21 ].…”

Section: Introductionmentioning

confidence: 99%

Polyethersulfone Blended with Titanium Dioxide Nanoribbons/Multi-Wall Carbon Nanotubes for Strontium Removal from Water

et al. 2022

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Nanofiltration methods were used and evaluated for strontium removal from wastewater. The phase inversion method was used to create a variety of polyethersulfone (PES)/TiO2 nanoribbons (TNRs)–multi-walled carbon nanotubes (MWCNTs) membranes with varied ratios of TNR-MWCNT nanocomposite. The hydrothermal technique was applied to synthesize the nanocomposite (TNRs-MWCNTs), which was then followed by chemical vapor deposition (CVD). The synthesized membranes were characterized by scanning electron microscopy (SEM), transmission electron microscopy, and FTIR. TNR macrovoids are employed as a support for the MWCNT growth catalyst, resulting in a TNR-MWCNT network composite. The hydrophilicity, mechanical properties, porosity, filtration efficiency of the strontium-containing samples, water flux, and fouling tendency were used to assess the performance of the synthesized membranes. The effect of feed water temperature on water flux was investigated as well as its effect on salt rejection. As the temperature increased from 30 to 90 °C, the salt rejection decreased from 96.6 to 82% for the optimized 0.7 PES/TNR-MWCNT membrane, whereas the water flux increased to ≈150 kg/m2. h. Double successive filtration was evaluated for its high efficiency of 1000 ppm strontium removal, which reached 82.4%.

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Section: Introductionmentioning

confidence: 99%

Polyethersulfone Blended with Titanium Dioxide Nanoribbons/Multi-Wall Carbon Nanotubes for Strontium Removal from Water

et al. 2022

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“…To dispose of the radioactive wastewater in nuclear power plants, scientists and engineers developed many dispose methods, including sorption (Avramenko et al 2016), (co) precipitation (Valsala et al 2011), ion exchange (Aleman 2008), solidification (Osmanlioglu 2014), and membrane separation (Sujish et al 2014). Among these methods, sorption is considered as one of the most cost-effective methods for removing radionuclides from radioactive wastewater.…”

Section: Introductionmentioning

confidence: 99%

Effects of phase, strain, pressure, vacancy, and doping on the adsorption of metallic radionuclides on monolayer 2H-MoS2

et al. 2020

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How to remove radionuclides from the radioactive wastewater quickly and efficiently is of great significance for mitigating the adverse effects of nuclear accident. Our previous researches have shown that metallic radionuclides (Cs + , Sr 2+ , and Ba 2+ ) can be chemisorbed on monolayer 2H-MoS 2 . To enhance the adsorption capacity of the monolayer 2H-MoS 2 to the metallic radionuclides, the effects of phase, strain, pressure, vacancy, and doping on the adsorption of the metallic radionuclides on the monolayer 2H-MoS 2 were investigated by using the first principles calculation method in this paper. The calculation results show that the adsorption energy of the metallic radionuclides on the monolayer 2H-MoS 2 is decreased by phase, strain, vacancy, and doping, while the pressure has little effect on the adsorption energy. The adsorption energy change indicates that the adsorption of the metallic radionuclides on the monolayer 2H-MoS 2 is enhanced by phase, strain, vacancy, and doping. The adsorption energy change is mainly contributed by the electron structure change, which caused by phase, strain, vacancy, and doping. Especially, the change of charge transfer between the metallic radionuclides and their nearest atoms on the monolayer 2H-MoS 2 is a very critical factor.

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“…Among these methods, membrane adsorption exhibited obvious advantages over the others [5, 8]. However, the theoretical fundamentals of membrane adsorption for strontium removal were conducted insufficiently.…”

Section: Introductionmentioning

confidence: 99%

“…To delete or restrain the potential danger caused by strontium ions, various innovative strategies are recently designed to remove strontium ions from water [ 1 , 2 , 6 – 8 ]. Among these methods, membrane adsorption exhibited obvious advantages over the others [ 5 , 8 ]. However, the theoretical fundamentals of membrane adsorption for strontium removal were conducted insufficiently.…”

Section: Introductionmentioning

confidence: 99%

Fundamental Studies of Novel Zwitterionic Hybrid Membranes: Kinetic Model and Mechanism Insights into Strontium Removal

Zhu

Liu

2014

The Scientific World Journal

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A series of zwitterionic hybrid membranes were prepared via the ring opening of 1,3-propanesultone with the amine groups in the chains of TMSPEDA and a subsequent sol-gel process. Their kinetic models for strontium removal were investigated using three two-parameter kinetic equations (i.e., Lagergren pseudo-first order, pseudo-second order, and Elovich models). Adsorption mechanism was evaluated using intraparticle diffusion model, diffusion-chemisorption model, and Boyd equation. It was found that the adsorption of strontium ions on these zwitterionic hybrid membranes fitted well with the Lagergren pseudo-second order model. Mechanism insights suggested that diffusion-chemisorption was one of the main adsorption mechanisms. Boyd equation exhibited that film-diffusion mechanism might be the control process during the starting period. These findings are very useful in strontium removal from the stimulated radioactive wastewater.

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Application of nanofiltration membrane and ethyleneimine oligomer mixture for selective separation of Strontium from a simulated nuclear waste solution

Cited by 9 publications

References 10 publications

Polyethersulfone Blended with Titanium Dioxide Nanoribbons/Multi-Wall Carbon Nanotubes for Strontium Removal from Water

Polyethersulfone Blended with Titanium Dioxide Nanoribbons/Multi-Wall Carbon Nanotubes for Strontium Removal from Water

Effects of phase, strain, pressure, vacancy, and doping on the adsorption of metallic radionuclides on monolayer 2H-MoS2

Fundamental Studies of Novel Zwitterionic Hybrid Membranes: Kinetic Model and Mechanism Insights into Strontium Removal

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