Removal of sodium from mineral acid solutions by adsorption on modified polyantimonic(V) acid ion-exchanger

Caletka, R.; Konecny, C.; Šimková, M

doi:10.1007/bf02518760

Cited by 18 publications

(7 citation statements)

References 8 publications

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“…19 Different adsorbents have been used so far for removal of sodium ions from aqueous solutions, which some of them are included zeolites, 4 chitosan, 20 activated carbon made from rice husk 21 and polyantimonic acid. 22 This study aims to compare the ability of cheap adsorbents like AC made from Moringa oleifera leaf, eggshell-derived CaO nanoparticles, and CaO/Fe 3 O 4 composite in the removal of sodium ion from synthetic wastewater, which these adsorbents have not been used to remove sodium ions in previous studies. Different analyses such as X-ray diffraction (XRD), scanning electron microscope (SEM), Brunauer-Emmett-Teller (BET), and Fourier-transform infrared spectroscopy (FTIR) were used to determine the surface properties of the activated carbon.…”

Section: Introductionmentioning

confidence: 99%

Selective Removal of Sodium Ions from Aqueous Media Using Effective Adsorbents: Optimization by RSM and Genetic Algorithm

Yao

Hong²,

Dashtifard

et al. 2021

ACSi

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This study aimed to determine the best adsorbent among Moringa oleifera-derived activated carbon (AC), eggshell-derived CaO nanoparticles and CaO/Fe3O4 for sodium (Na+) removal from aqueous media. In the first step, the appropriate adsorbent for sodium adsorption was determined among the three adsorbents, which the results showed that the AC had the highest sorption efficiency. Then, response surface methodology (RSM) was used to evaluate the impact of different factors on the Na+ ion sorption efficiency using the AC. The highest removal efficiency was obtained to be 95.91% at optimum conditions such as pH of 11, contact time of 45 min, temperature of 25 °C, sodium ion concentration of 900 mg/L, and adsorbent dosage of 5 g/L. Also, the best conditions using the genetic algorithm was obtained at contact time of 94.97 min, adsorbent dosage of 3.52 g/L, Na+ ion concentration of 939.92 mg/L and pH value of 10.92. Moreover, the maximum sorption capacity using the Langmuir model was obtained to be 249.67 mg/g, which was a significant value. Besides, the equilibrium and kinetic studies indicated that the experimental data of sodium adsorption process were fitted well with the Langmuir isotherm model and the pseudo-second-order kinetic model, respectively. Furthermore, the thermodynamic study indicated that the sorption process was endothermic. Generally, among the three adsorbents used, activated carbon with a high removal efficiency and significant sorption capacity can be considered as a promising adsorbent for the removal of sodium from wastewater on an industrial scale.

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Section: Introductionmentioning

confidence: 99%

Selective Removal of Sodium Ions from Aqueous Media Using Effective Adsorbents: Optimization by RSM and Genetic Algorithm

Yao

Hong²,

Dashtifard

et al. 2021

ACSi

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“…Out of these, the phosphates are the most studied. Phosphates of zirconium (6), titanium (7), tin (8), cerium (9), chromium (lo), tantalum (1 l), and antimony (12) have been synthesized and used for various separations in analytical chemistry. Few ion exchange studies on iron salts have been made.…”

Section: Introductionmentioning

confidence: 99%

Studies on inorganic ion exchangers. I. Preparation, properties, and applications of ferric phosphate

Rawat¹,

Thind²

1976

Can. J. Chem.

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Eight samples of ferric phosphates have been prepared at different pH values under different conditions. This material shows cation exchange properties. Ferric phosphate prepared by ferric nitrate and ammonium dihydrogen phosphate at pH 1 is the most stable and shows the maximum ion exchange capacity, hence, this sample is studied in detail. The mole ratio of Fe3+:PO43− is 1:2. The ion exchange capacity depends upon temperature and hydrated radii, and these relations are discussed. Certain important separations are achieved on the ferric phosphate column. Its oxidation properties are also qualitatively investigated with some reducing agents.

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“…In direct contradiction to Girardi and Sabbioni is a report which stated that sodium could be eluted from HAP with either nitric acid or ammonium nitrate (155). Konecny and Hartl reported a significantly lower selectivity of HAP for sodium over the other alkali metals (158).…”

Section: Decontamination and Concentrationmentioning

confidence: 80%

“…Konecny and Hartl reported a significantly lower selectivity of HAP for sodium over the other alkali metals (158). The high capacity of HAP for sodium has been verified by Caletka et al (155), but has been contradicted by Baestle and Huys (159), and Ralston and' Sato (157).…”

Section: Decontamination and Concentrationmentioning

confidence: 93%

“…Since the initial report, HAP has been extensiveiy studied, and inconsistencies and disputations abound (145,(153)(154)(155)(156)(157)(158)(159)(160)(161). Krishnan and Crapper, while trying to extend the work of Gira.rdi and Sabbioni to different concentrations of hydrochloric acid and different acids, found that scandium, silver, and potassium were also adsorbed to a limited extent from 12M hydrochloric acid solutions (156).…”

Section: Decontamination and Concentrationmentioning

confidence: 99%

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Evaluation of some procedures relevant to the determination of trace elemental components in biological materials by destructive neutron activation analysis

Berry

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Nonessential elements are, conversely, those trace elements detected in the human body which have not been found to serve in any physiological capacity. It should be noted that in 1971 there were roughly twelve trace elements recognized as essential (1), and presently some sixteen trace elements are so classified (5). With the de•velopment of more sensitive analytical techniq~es, the number of essential trace elements is expected to increase.The body regulates the levels of the various elements, both essential and nonessential, within specific limits. Abnormalities associated with the essential trace elements may be caused by a specific deficiency (from dietary inadequacies, imbalances, or the result of other diseases) or. accumulation of innately toxic concentrations of trace elements from the environment. While disease states due to the deficiency, as opposed to the excess of an essential trace element, are more prevalent, practically all concern with nonessential trace elements is with respect to the physiological effects of accumulating excesses. Since excursions in the concentrations of trace elements outside of normal ranges are theoretically detectable by an appropriately .sensitive technique, the diagnosis and treatment of human disorders based on changes in the levels of trace elements in the body is feasible. aUnderlined elements are considered causal factors in the diseases.

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Removal of sodium from mineral acid solutions by adsorption on modified polyantimonic(V) acid ion-exchanger

Cited by 18 publications

References 8 publications

Selective Removal of Sodium Ions from Aqueous Media Using Effective Adsorbents: Optimization by RSM and Genetic Algorithm

Selective Removal of Sodium Ions from Aqueous Media Using Effective Adsorbents: Optimization by RSM and Genetic Algorithm

Studies on inorganic ion exchangers. I. Preparation, properties, and applications of ferric phosphate

Evaluation of some procedures relevant to the determination of trace elemental components in biological materials by destructive neutron activation analysis

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