Sorption of strontium ions from aqueous solutions by oxidized multiwall carbon nanotubes

Yavari, R.; Huang, Yudong; Mostofizadeh, Ali

doi:10.1007/s10967-010-0600-y

Cited by 50 publications

(12 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In all of these studies, sorption capacity increased with increasing pH-values and with increasing concentration of metal ions. Again, the Langmuir isotherms were found as the corresponding theoretical model suggesting that monolayers of metal ions were formed on the adsorbent surface Lu et al, 2008Lu et al, , 2009El-Sheikh et al, 2011;Yavari et al, 2010).…”

Section: Adsorption Of Heavy Metal Ions and Aromatic Compounds On Cntmentioning

confidence: 76%

Interactions of carbon nanotubes with aqueous/aquatic media containing organic/inorganic contaminants and selected organisms of aquatic ecosystems – A review

et al. 2015

View full text Add to dashboard Cite

Section: Adsorption Of Heavy Metal Ions and Aromatic Compounds On Cntmentioning

confidence: 76%

Interactions of carbon nanotubes with aqueous/aquatic media containing organic/inorganic contaminants and selected organisms of aquatic ecosystems – A review

et al. 2015

View full text Add to dashboard Cite

“…In general, with pH increasing, the adsorption capacity of Sr 2+ and Co 2+ increased. Based on the speciation of Sr, Co, and Cs, when pH value ranged from 1 to 11, Sr 2+ is the dominant species in solution; at pH value above 11, the species of Sr(OH) + is the predominant species . Co 2+ is the dominant species when pH < 7 and the Co(OH) 2 is predominant species when pH above 7.…”

Section: Resultsmentioning

confidence: 99%

Removal of Sr²⁺, Co²⁺, and Cs⁺ from aqueous solution by immobilized Saccharomyces cerevisiae with magnetic chitosan beads

Yin

Wang

2017

Env Prog and Sustain Energy

View full text Add to dashboard Cite

In this article, a novel biomaterial, the immobilized Saccharomyces cerevisiae with magnetic chitosan was prepared, characterized, and applied for the removal of Sr2+, Co2+, and Cs+ from aqueous solution in single and binary component systems. The results demonstrated that initial pH values had significant influence on the removal of Sr2+, Co2+, and Cs+. The maximum sorption capacity (qm) for Sr2+, Co2+, and Cs+ in single system was calculated to be 36.97 mg/g, 30.92 mg/g, and 16.67 mg/g from the Langmuir model, respectively. The presence of the competitive metal ions could inhibit the adsorption of the primary metal ions. The order of sorption capacity for Sr2+, Co2+, and Cs+ in both single and binary component systems was Sr2+> Co2+ > Cs+. The immobilized S. cerevisiae had higher affinity to Sr2+ than to Co2+ and Cs+, which was potential biosorbent for removing Sr2+, Co2+, and Cs+ from radioactive wastewater. © 2017 American Institute of Chemical Engineers Environ Prog, 36: 989–996, 2017

show abstract

“…ions by CuO NPs/Agclinoptilolite zeolite composite has been investigated. [38]. To gain the most selectivity and removal efficiency, pH of 8.5 was considered for the further modifications and more than 97 % adsorption yield.…”

Section: Effect Of Phmentioning

confidence: 99%

Effective removal of radioactive 90Sr by CuO NPs/Ag-clinoptilolite zeolite composite adsorbent from water sample: isotherm, kinetic and thermodynamic reactions study

et al. 2016

View full text Add to dashboard Cite

In this research, the natural zeolite named clinoptilolite (NCp) was considered as an applicable base structure for subsequent preparation and modification by pre-selected chemical agents to use for removal/adsorption goals in progress. To make Na-clinoptilolite form, the mentioned zeolite undergoes variations by treating with NaCl salt. Ion exchange procedure was utilized to imprint silver ions (Ag ? ) from silver (I) nitrate solution as silver precursor on the modified clinoptilolite zeolite structure to attain Ag-clinoptilolite zeolite. Tenorite (CuO) NPs have been then dispersed and deposited on the external surface of the pre-prepared Ag-clinoptilolite zeolite through impregnation method to prepare the CuO NPs/Ag-clinoptilolite zeolite as a novel composite adsorbent. A series of analyses techniques including SEM-EDAX, XRD and FT-IR were applied for characterization and identification of crystal structure, morphology and elemental composition of the synthesized samples. The removal and adsorption process of radioactive strontium-90 ( 90 Sr) by CuO NPs/Agclinoptilolite zeolite composite adsorbent was exploited under various experimental conditions including pH, amount of adsorbent and the contact time at room temperature and the final optimized procedure used for removal of probable presence of 90 Sr in water sample of Bushehr city. Adsorption isotherm models including Langmuir, Freundlich, Temkin, D-R, H-J and Hasley have been applied and equilibrium adsorption data was better fitted to the Freundlich, Temkin, H-J and Halsey isotherms. The reaction kinetic information was studied by utilizing pseudo first and second orders, Elovich and Intra particle diffusion kinetic models. The adsorption kinetics is finely described by the pseudo second-order model. The energy of activation E a calculated using the Arrhenius equation was found to be 44.75 kJ/mol. Further, the evaluation of the thermodynamic parameters such as DG 0 , DH 0 and DS 0 , denoted that adsorption process of 90 Sr was spontaneous and illustrates a chemical adsorption properties and exothermic nature of the adsorption. The obtained results revealed that 90 Sr ions were removed by CuO NPs/Agclinoptilolite zeolite composite under optimized conditions after 6 h with a yield more than 97 %.

show abstract

Sorption of strontium ions from aqueous solutions by oxidized multiwall carbon nanotubes

Cited by 50 publications

References 31 publications

Interactions of carbon nanotubes with aqueous/aquatic media containing organic/inorganic contaminants and selected organisms of aquatic ecosystems – A review

Interactions of carbon nanotubes with aqueous/aquatic media containing organic/inorganic contaminants and selected organisms of aquatic ecosystems – A review

Removal of Sr²⁺, Co²⁺, and Cs⁺ from aqueous solution by immobilized Saccharomyces cerevisiae with magnetic chitosan beads

Effective removal of radioactive 90Sr by CuO NPs/Ag-clinoptilolite zeolite composite adsorbent from water sample: isotherm, kinetic and thermodynamic reactions study

Contact Info

Product

Resources

About

Sorption of strontium ions from aqueous solutions by oxidized multiwall carbon nanotubes

Cited by 50 publications

References 31 publications

Interactions of carbon nanotubes with aqueous/aquatic media containing organic/inorganic contaminants and selected organisms of aquatic ecosystems – A review

Interactions of carbon nanotubes with aqueous/aquatic media containing organic/inorganic contaminants and selected organisms of aquatic ecosystems – A review

Removal of Sr2+, Co2+, and Cs+ from aqueous solution by immobilized Saccharomyces cerevisiae with magnetic chitosan beads

Effective removal of radioactive 90Sr by CuO NPs/Ag-clinoptilolite zeolite composite adsorbent from water sample: isotherm, kinetic and thermodynamic reactions study

Contact Info

Product

Resources

About

Removal of Sr²⁺, Co²⁺, and Cs⁺ from aqueous solution by immobilized Saccharomyces cerevisiae with magnetic chitosan beads