Characterizations of strontium(II) and barium(II) adsorption from aqueous solutions using dolomite powder

Ghaemi, Ahad; Torab‐Mostaedi, Meisam; Ghannadi‐Maragheh, Mohammad

doi:10.1016/j.jhazmat.2011.04.006

Cited by 231 publications

(64 citation statements)

References 32 publications

(35 reference statements)

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“…The obtained water adsorption isotherms represented type II instead of type III isotherms, which can be explained in the same way as explained in the "BET Adsorption Isotherms" section. These results were also observed by Halasz et al (2002), who found that less hydrophobic zeolites give rise to a type II isotherm, indicating that water adsorption does not take place in its microchannels. This means that the higher water adsorption of zeolites BEA and FAU can be the result of higher external surface areas.…”

Section: Freundlich Adsorption Isothermssupporting

confidence: 79%

Removal of Pesticides from Aqueous Solutions by Adsorption on Zeolites as Solid Adsorbents

Smedt

Ferrer

Leus

et al. 2015

Adsorption Science & Technology

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ABSTRACT:To prevent the contamination of groundwater and surface water by pesticides, appropriate measures should be taken to treat the contaminated water before discharge. Zeolites seem to be a promising material to adsorb pesticides. This paper deals with the removal of mobile pesticides from water on different types of zeolites. Experiments were performed to understand the adsorption mechanisms of bentazon, clopyralid, imidacloprid, isoproturon and metalaxyl-m on zeolites and to determine the most efficient adsorbent for the purification of water contaminated by these pesticides. More immobile pesticides (imidacloprid, isoproturon and metalaxyl-m) tended to associate with the zeolites, whereas more mobile pesticides (bentazon and clopyralid) partitioned in water. According to the adsorption percentage, zeolite of the types BEA and FAU showed the best results for adsorbing the pesticides. Two different kinetic models, namely, pseudo-first-order and pseudo-second-order models, were used to fit the kinetics data. The experimental data were best described by the pseudo-second-order model. The rate of adsorption was also in line with the mobility of the pesticides. The adsorption isotherms were determined and modelled based on the observed types according to International Union of Pure and Applied Chemistry. The type III isotherm was most frequently observed in this case. The Freundlich model, which describes this type of isotherm, gave a good fit for the adsorption of the pesticides. Different assumptions, that could describe the meaning of these type III isotherms, are discussed in this paper. These assumptions are based on the particle size of the adsorbates, the water adsorption on the zeolites and the modifications of the crystal structures.

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Section: Freundlich Adsorption Isothermssupporting

confidence: 79%

Removal of Pesticides from Aqueous Solutions by Adsorption on Zeolites as Solid Adsorbents

Smedt

Ferrer

Leus

et al. 2015

Adsorption Science & Technology

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“…Most combined approaches using MF/UF membranes and adsorbents have attempted to utilize this advantage. Ghaemi et al (2011) used absorption technique for strontium and barium removal from aqueous solution using dolomite powder. The results showed that the adsorption for both ions was feasible and exothermic.…”

Section: Nanosized Metal Oxides (Nmos)/nanomaterialsmentioning

confidence: 99%

Removal of heavy metals and pollutants by membrane adsorption techniques

2018

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Application of polymeric membranes for the adsorption of hazardous pollutants may lead to the development of next-generation reusable and portable water purification appliances. Membranes for membrane adsorption (MA) have the dual function of membrane filtration and adsorption to be very effective to remove trace amounts of pollutants such as cationic heavy metals, anionic phosphates and nitrates. In this review article, recent progresses in the development of MA membranes are surveyed. In addition, recent progresses in the development of advanced adsorbents such as nanoparticles are summarized, since they are potentially useful as fillers in the host membrane to enhance its performance. The future directions of R&D in this field are also shown in the conclusion section.

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“…Therefore, the separation of Sr 2+ ions from waste solutions is very important. [3]- [5] A new trend in the treatment of the radioactive waste solutions is the use of the ionic liquids (IL) due to their "green" properties [6]- [11]. Instead of the liquid-liquid extraction, was found, that the immobilization of the ionic liquids in a suitable solid supports is more suitable for the metal ions removal from aqueous solutions because is avoid the loss of ionic liquid, and the generation of a great amount of organic waste resulting from the hydrolytic and radiolytic degradation of the extractants and diluents [8], [9], [11].…”

Section: Introductionmentioning

confidence: 99%

Characterization of Strontium Adsorption from Aqueous Solutions Using Inorganic Materials Impregnated with Ionic Liquid

Negrea¹,

Lupa²,

Ciopec³

et al. 2013

IJCEA

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Characterizations of strontium(II) and barium(II) adsorption from aqueous solutions using dolomite powder

Cited by 231 publications

References 32 publications

Removal of Pesticides from Aqueous Solutions by Adsorption on Zeolites as Solid Adsorbents

Removal of Pesticides from Aqueous Solutions by Adsorption on Zeolites as Solid Adsorbents

Removal of heavy metals and pollutants by membrane adsorption techniques

Characterization of Strontium Adsorption from Aqueous Solutions Using Inorganic Materials Impregnated with Ionic Liquid

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