Kinetic and Thermodynamic Behavior of Selenium on Modified Bentonite and Activated Carbon using Radiotracer Technique

Tuğrul, Beril; Erenturk, Sema; Haciyakupoglu, Sevilay; Karatepe, Nilgün; Altınsoy, N.; Baydoğan, Nilgün; Baytaş, F.; Büyük, B.; Demir, E.; Gedik, Şansal

doi:10.12693/aphyspola.128.b-180

Cited by 9 publications

(6 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In order to determine the kinetic parameters of MG adsorption on the AB, the pseudo-first-order, pseudosecond-order models were applied to fit the experimental data. The linear form of the pseudo-first order rate equation is given as [13,14]:…”

Section: Resultsmentioning

confidence: 99%

Sorptive Removal of Methyl Green from Aqueous Solutions using Activated Bentonite

2017

View full text Add to dashboard Cite

Bentonite clay from Maghnia (North West Algeria) has been acid-activated. The activated bentonite was employed as adsorbent for the removal of methyl green from aqueous solutions using adsorption method. The influence of several parameters (kinetics, contact time, sorbent amount, adsorbate concentration and pH) on the adsorption capacity was evaluated and discussed. The Langmuir adsorption model was applied to experimental equilibrium data and the isotherm constant was calculated. The results indicated that the adsorption was favourable at neutral pH. This model provided the best fit to the experimental data with high correlation coefficient (R 2 = 0.996). The monolayer adsorption capacity of activated bentonite found to be 353.33 mg/g. It was seen that pseudo-first order equation describes the adsorption kinetics. The results indicated that this bentonite-type clay is potential to be used as an economical adsorbent for the removal of methyl green dye.

show abstract

Section: Resultsmentioning

confidence: 99%

Sorptive Removal of Methyl Green from Aqueous Solutions using Activated Bentonite

2017

View full text Add to dashboard Cite

show abstract

“…In addition, the pretreated RHAs are porous and have high surface areas. Thus pretreated RHAs could be good candidates for adsorbents [12] for the removal of dyes and heavy metals, and adsorbents in air pollution and water purification systems [13,14].…”

Section: Discussionmentioning

confidence: 99%

Preparation and Characterization of High Purity Silica Obtained from Rice Husks

Şimşek

2017

Acta Phys. Pol. A

View full text Add to dashboard Cite

Although SiO2 is produced mostly from mineral sources like quartz, it has recently been obtained from lignocellulosic natural resources, such as rice husk (hull). Several methods for extracting silica (SiO2) from rice husks are available in the literature. These methods are based essentially on heat treatment and/or extraction. This study represents a thorough account of heat treatment and acid-base extraction, to obtain silica from rice husks with a high purity and to eliminate other inorganic impurities. Rice husks, considered to be a potential silica source, were pretreated with various acids, base and water and then thermally degraded in a fixed bed reactor under an inert gas atmosphere (N2). The materials produced in these conditions were characterized by BraunerEmmett-Teller analysis, for surface area and pore volume, by Fourier transform infrared spectroscopy, powder X-ray diffraction, X-ray fluorescence, and scanning electron microscopy.

show abstract

“…The Lagergren pseudo first-order and pseudo-second-order models were applied to determine the sorption mechanism [9,[11][12][13][14][15].…”

Section: Characterization Techniquesmentioning

confidence: 99%

Poly(2-acrylamido-2-methyl-1-propane sulfonic acid-co-1-vinyl-2-pyrrolidone) Hydrogel and its use in the Removal of Cd(II), Pb(II) and Cu(II)

Çavuş

Çakal

2017

Acta Phys. Pol. A

View full text Add to dashboard Cite

Poly(2-acrylamido-2-methyl-1-propanesulfonic acid-co-1-vinyl-2-pyrrolidone), P(AMPS-co-VP), hydrogel was prepared by free radical cross-linking polymerization method. Prepared hydrogel was used in the competitive removal of Cd(II), Pb(II) and Cu(II) ions from aqueous solution. The characterization of P(AMPS-co-VP) before and after sorption was carried out by the Fourier transform infrared spectroscopy, thermogravimetric analysis and scanning electron microscopy. Atomic absorption spectrometer was used to found the concentration of metal ions in the aqueous solution. The selectivity of P(AMPS-co-VP) was as follows: Cd(II)>Pb(II)>Cu(II). Kinetic study showed that competitive removal of heavy metal ions on poly(AMPS-co-VP) was in accordance with a pseudosecond-order model.

show abstract

Kinetic and Thermodynamic Behavior of Selenium on Modified Bentonite and Activated Carbon using Radiotracer Technique

Cited by 9 publications

References 4 publications

Sorptive Removal of Methyl Green from Aqueous Solutions using Activated Bentonite

Sorptive Removal of Methyl Green from Aqueous Solutions using Activated Bentonite

Preparation and Characterization of High Purity Silica Obtained from Rice Husks

Poly(2-acrylamido-2-methyl-1-propane sulfonic acid-co-1-vinyl-2-pyrrolidone) Hydrogel and its use in the Removal of Cd(II), Pb(II) and Cu(II)

Contact Info

Product

Resources

About