Characterization and Improvement of Ion Exchange Capacities of Mexican Clinoptilolite-rich Tuffs

Díaz-Nava, M. C.; Olguín, M. T.; Solache‐Ríos, M.; Alarcón-Herrera, María Teresa; Aguilar-Elguézabal, A.

doi:10.1007/s10847-004-6716-3

Cited by 38 publications

(8 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The materials were washed to achieve a Cl -free solution, using silver nitrate solution as an indicator. The resultant materials were dried at 110 o C for 24 h (Ming and Dixon, 1987;Diaz-Nava et al, 2005).…”

Section: Zeolite Treatmentsmentioning

confidence: 99%

Removal of cadmium and humic acid from aqueous solutions using surface modified nanozeolite A

Tashauoei

Attar

Amin

et al. 2010

Int. J. Environ. Sci. Technol.

View full text Add to dashboard Cite

ABSTRACT:The sorption of cadmium and humic acids from aqueous solutions using surface-modified nanozeolite A has been investigated under various examination conditions. The morphology of untreated and treated nanozeolite was studied under scanning electron microscope and transmission electron microscope. Isotherms of cadmium adsorption onto surfacemodified nanozeolite A were studied at different pH, solid to liquid ratio, adsorbate concentration and interaction time. Kinetic and equilibrium studies were conducted and the equilibrium data have been analyzed using Langmuir and Freundlich isotherm models. The study revealed that experimental results were in agreement with the Freundlich model. The Langmuir monolayer adsorption capacity was found to be 1666.67 g cadmium and 6.75 g humic acid per gram of modified nanozeolite A, which is higher than that of reported value for other zeolites. The sorption ability was enhanced by surface modification and reduction in size and enabled the zeolite to adsorb cadmium. The adsorption of cadmium and humic acid on nanozeolite was found to be the highest at pH 6 and 3, respectively. Results showed that solid to liquid ratio and pH are the most important factors for cadmium and humic acid removal, respectively. Effect of competitive ions was studied and results showed that there is no competition between cadmium and humic acid sorption and presence of these ions.

show abstract

Section: Zeolite Treatmentsmentioning

confidence: 99%

Removal of cadmium and humic acid from aqueous solutions using surface modified nanozeolite A

Tashauoei

Attar

Amin

et al. 2010

Int. J. Environ. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…The diffractograms were compared with clinoptilolite (JCPDS 039-1383), which was the principal component found in the zeolitic samples. Díaz-Nava et al (2005) reported the presence of mordenite, quartz and sodium anortite in this natural tuff.…”

Section: X-ray Diffractionmentioning

confidence: 80%

“…Sulfur was found only in the sample saturated with Brilliant Blue FCF dye, and this may indicate the presence of the dye on the tuff, since this element forms part of the structure of the dye. The external, internal, effective cation exchange capacities and a full characterization of the zeolitic tuff have been reported in a previous research (Díaz-Nava et al 2005).…”

Section: Scanning Electron Microscopymentioning

confidence: 83%

Sorption Behavior of Brilliant Blue FCF by a Fe-Zeolitic Tuff

Pinedo-Hernández

Díaz-Nava

Solache‐Ríos

2011

Water Air Soil Pollut

Self Cite

View full text Add to dashboard Cite

The adsorption of Brilliant Blue FCF from aqueous solution was evaluated using a Fe-zeolitic tuff. The adsorbent was characterized by scanning electron microscopy, IR spectroscopy and X-ray diffraction. Sorption kinetic, isotherms, dose and pH effects were determined and the adsorption behavior was analyzed. Kinetic pseudo-first order and linear isotherm models were successfully applied to the experimental results, indicating that the sorption mechanism is physisorption. Experiments in columns were performed and breakpoint was found in 100 min using a concentration of 5 mg/l.

show abstract

“…The characterization of the zeolitic tuff has been reported elsewhere [25]. In that previous work it was found that the clinoptilolite was the main component of the zeolitic tuff and in a minor amount mordenite, quartz and sodium anorthite were present.…”

Section: Methodsmentioning

confidence: 87%

Phenol sorption on surfactant-modified Mexican zeolitic-rich tuff in batch and continuous systems

Díaz-Nava

Olguín

Solache‐Ríos

et al. 2009

Journal of Hazardous Materials

Self Cite

View full text Add to dashboard Cite

Characterization and Improvement of Ion Exchange Capacities of Mexican Clinoptilolite-rich Tuffs

Cited by 38 publications

References 22 publications

Removal of cadmium and humic acid from aqueous solutions using surface modified nanozeolite A

Removal of cadmium and humic acid from aqueous solutions using surface modified nanozeolite A

Sorption Behavior of Brilliant Blue FCF by a Fe-Zeolitic Tuff

Phenol sorption on surfactant-modified Mexican zeolitic-rich tuff in batch and continuous systems

Contact Info

Product

Resources

About