Journal ArticleDOI
Some ion exchange properties of exfoliated vermiculite
D.J. Seaborn,G.J. Jameson +1 more
TLDR
In this paper, a commercial exfoliated vermiculite was used as an ion exchange medium for the removal of transition metal ions from dilute aqueous solutions, and a simple favorable-equilibrium model for the breakthrough curve was found to fit the data provided the flow rate was less than 1.5 ml/cm2 min.About:
This article is published in Hydrometallurgy.The article was published on 1976-12-01. It has received 13 citations till now. The article focuses on the topics: Vermiculite & Ion exchange.read more
Citations
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Journal ArticleDOI
Removal of Cu(II) in fixed bed and batch reactors using natural zeolite and exfoliated vermiculite as adsorbents
TL;DR: In this paper, the ability of natural zeolite (clinoptilolite) and exfoliated vermiculite to remove copper from aqueous solutions was studied in fixed bed column and batch reactors.
Journal ArticleDOI
Formation and characterization of polyurethane-vermiculite clay nanocomposite foams
TL;DR: In this paper, the authors synthesize rigid polyurethane foam with unmodified vermiculite clay, and the clay is dispersed either in polyol or isocyanate before blending.
Journal ArticleDOI
Two-phase homogeneous diffusion model for the fixed bed sorption of heavy metals on natural zeolites
TL;DR: In this paper, a non-dimensional homogeneous solid diffusion model including axial dispersion and equipped with a universal double-selectivity equilibrium model is developed and applied for fixed bed removal in natural zeolites.
Journal ArticleDOI
Experimental studies and modeling of clinoptilolite and vermiculite fixed beds for Mn2+, Zn2+, and Cr3+ removal
TL;DR: In this paper, batch and fixed bed experiments were conducted in order to compare clinoptilolite and vermiculite for the removal of Mn2+, Zn2+, and Cr3+ from aqueous solutions under the same experimental conditions.
Journal ArticleDOI
Revitalization of EDTA-remediated soil by fertilization and soil amendments
TL;DR: In this article, the effect of soil remediation on fractionation of soil metals was assessed using modified Tessier sequential extraction procedure, and the soil was further amended with fertilizer (N, K, Mn and Mg), manure, hydrogel, vermiculite, apatite, and commercial absorbent (Slovakite) and subjected to spinach cultivation in a column experiment.
References
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Journal ArticleDOI
Ion Exchange Kinetics. A Nonlinear Diffusion Problem
F. Helfferich,M. S. Plesset +1 more
TL;DR: In this paper, ideal limiting laws for the kinetics of particle diffusion controlled ion exchange processes involving ions of different mobilities between spherical ion exchanger beads of uniform size and a well-stirred solution are calculated.
Journal Article
Vermiculite and its relation to biotite as revealed by base exchange reactions, x-ray analyses, differential thermal curves, and water content
Journal ArticleDOI
Infrared Absorption Evidence on Exchange Reaction Mechanism of Copper and Zinc with Layer Silicate Clays and Peat
L. E. DeMumbrum,M. L. Jackson +1 more
TL;DR: In this article, the degree to which cations which form weak bases are sorbed in excess of strong bases is shown to be about 10% in montmorillonite and 40% in peat.
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Cation-exchange equilibria with vermiculite
TL;DR: In this paper, the exchange of Na, Mg, Ca, Sr, and Ba ions has been studied in the temperature range 25° C-70° C and the preference is less marked between divalent ions.