Modeling of the adsorption kinetics of zinc onto granular activated carbon and natural zeolite LJILJANA T. MARKOVSKA, 2 Zn(II) – Natural zeolite Rc 2 q m mg g1 K L dm3 mg q m mg g1 K L dm3 mg 8.325 0.689 0.975 3.644 0.117 0.997 Comparingthevaluesof qm fortheadsorptionofZn(II)ontoGACandnaturalzePublished in: Journal of The Serbian Chemical Society · 2006Authors: Ljiljana T Markovska · Vera Meshko · Mirko MarinkovskiAbout: Sorption isotherm · Computer program · Adsorption · Diffusion · Aqueous solution · Kin
We investigated the effectiveness of natural zeolite (NZ) and sand (SD) as a capping material to block the release of heavy metals (Cd, Cr, Cu, and Zn) from heavily contaminated marine sediments and stabilize these heavy metals in the sediments.
Two natural zeolites, clinoptilolite and chabazite, have been evaluated with respect to their selectivity and removal performance for the treatment of effluents con taminated with mixed heavy metals, namely Pb, Cd, Cu, Zn, Cr, Ni and Co. Parameters such as metal concentration, pH and presence of competing ions were examined and removal performance was determined in terms of the zeolites, ion
WOAR Journals Page 3 Erdem et al.  examined the adsorption of Zn2+ on natural zeolite for varying initial metal concentration and found that the adsorption efficiency decreased with
Zeolita Natural ZN AQUA ® ZN Aqua® is a high quality zeolite specifically selected for use in water treatment and filtration appliions. It is a very hard zeolite which is activated (dried) at 350ºC, milled, seived and separated into the sizes shown below.
This paper investigates Zn 2+ adsorption characteristics of two natural zeolites found in the regions of Gordes and Bigadic, in western Turkey. The results show that the Zn 2+ adsorption behavior of both zeolites is highly dependent on the pH.
The alytic selective reduction of NO over metalexchanged (Zn II, Ag I) natural zeolites (mordenite and clinoptilolite) from Cuba using NH 3 as a reducing agent in the presence of excess oxygen was studied. Both transition metals slightly improve the alytic performance for the NO reduction.Published in: Zeitschrift für anorganische und allgemeine Chemie · 2005Authors: Ramon Morenotost · Jose Santamariagonzalez · Enrique Rodriguezcastellon · Enrique Affiliation: Spanish National Research Council · University of MalagaAbout: Clinoptilolite · Ammonia · Catalysis · Mordenite · Selective alytic reduction · Nitric o
In the present study, clinoptilolite rich local natural zeolite was proposed as an ionexchanger for the removal of heavy metals (Pb 2+, Cu 2+, Zn 2+ ) from wastewaters. Natural zeolite samples were exposed to a simple pretreatment process which included
of natural zeolite chemical modifiion was obtained in the range of 5.4 to 24.0%, with an average value of 9.2 %. Iodine number was selected as a parameter for natural zeolite
"Feasibility of using natural zeolites to remove sodium from CBM produced water." MS thesis, Dept. of Environmental Engineering, New Mexico Tech, Socorro, N.M. New Mexico Energy, Minerals and Natural Resources Department (EMNRD).
exchange reaction by natural Zeolite which has a special structure enable to displace exchange ions (Mg +,K +,Ca +2, Na + ) by heavy metal ions such as Pb +2, V +5, Zn +2, Fe +2, and Ni +2 .
The zeolite characterization analysis included some variables i.e. mineral types, morphologyand pH, CEC (Cation Exchange Capacity), BSP (Base Saturation Point), Cu and Zn content of zeolite. Analysis of natural zeolite adsorption characteristics were done by Batch System.
Znexchanged zeoliteA based on natural aluminosilies and their potential appliions Emmanuel Nyankson 1, Johnson Kwame Efavi *, Abu Yaya, Gloria Manu 1, Kingsford Asare, Joseph
Selective Removal of Metal Ions from Crude Oil using Synthetic Zeolites the selective contributions of the natural zeolites in the removal of these poisonous metals from crude oil . There is therefore Ba2+ and Zn2+ ions by zeolite3A, J. Radioanal. Nucl. Chem. Lett. 94,17–24.
In this study, we investigated the removal of Fe, Pb, Cd, and Zn from synthetic mine waters by a natural zeolite. The emphasis was given to the zeolite's behavior toward a
the natural zeolite could remove different heavy metals from drinking water.Cadmium content (6ppm) in the rearing water of Mozambique tilapia could be reduced after 45 Days exposure
CYCLISATIONACETYLATION KINETIC OF (R)(+)CITRONELLAL BY Zn2+–NATURAL ZEOLITE AS SOLID SOLVENT CATALYST Zn2+natural zeolite, kinetic INTRODUCTION Citronellal is a monoterpene in citronella oil (Cymbopogon winterianusJava type) that has two optical isomeric with molecular weight of 154.25. ThePublished in: Indonesian Journal of Chemistry · 2010Authors: Edy Cahyono · M Muchalal · Triyono Triyono · Harno Dwi PranowoAffiliation: Gadjah Mada University
The aim of this study is to use natural zeolite, clinoptilolite, as an adsorbent for the removal of copper, zinc, manganese and lead ions from synthetic aqueous solutions. [Show full abstract
were pure zeolites and natural ones contain other mineral impu rities such as Ca, Mg, Fe and K  which could interfere in the exchange of zinc with sodium ions.
Sorption and desorption of zinc on two natural zeolites – clinoptilolite and mordenite was studied using batch technique. The sorbed Zn quantity was studied as a function of its concentration in solutions.
Two types of zeolites—natural clinoptilolite (NZ) and synthetic zeolite A (A)—were enriched with approx. 0.25 mmol of Cu(II), Zn(II), or Ag(I) ions, and the obtained materials (MZ) were tested against three different isolates of Escherichia coli. Two isolates were environmental isolates from
(Fe, Zn, Mn, Cu and B) by natural zeolite minerals is almost scarce in the literature, despite the relative importance of zeolite as natural carrier for nutrients. The objectives of this research included (1) the evaluation of Zn and Mn sorption
Zeolita Natural ZN MICRO ® Micronized natural zeolites are opening up a whole new range of innovative appliion areas. It is being used increasingly in health care products, particularly as a natural detoxifying mineral, but also in many personal care products.
EFFECT OF COMPETING CATIONS (Cu, Zn, Mn, Pb) ADSORBED BY NATURAL ZEOLITE 1AFRODITA ZENDELSKA, 2MIRJANA GOLOMEOVA 1, 2 Faculty of Natural and Technical Sciences, Goce Delcev University, Stip, Macedonia Email: [email protected] ABSTRACT The aim of this work was to investigate the influence of the presence of competing
The sorption equilibria in natural zeolite – aqueous solutions systems J. Perića, M. Trgoa, −.CerjanStefanovićb aFaculty of Chemical Technology, Teslina 10/V, 21000 Split, Croatia bFaculty of Chemical Engineering and Technology, Marulićev trg 20, 10000 Zagreb, Croatia Equilibrium properties of the hydrolysis and ion exchange process have been
Removal from Mine Waste by Natural Zeolite Amanda L. Ciosek, Grace K. Luk Department of Civil Engineering, Faculty of Engineering and Architectural Science, Ryerson University >Cu >Zn. 2+ >Ni the zeolite mineral exhibits the greatest preference towards the Pb. 2+ ion in all parameter trends. Overall, the removal efficiency
The natural zeolite has shown three times higher removal efficiency for Zn 2+ ion than alumina. On the other hand, alumina exhibited comparable but smaller removal efficiency for As 3+ as with that of natural zeolite.
Antimicrobial results clearly indied that Agbased zeolites exhibited more antimicrobial activity than Cu and Znbased zeolites. Interestingly, the multiionic zeolite, that is, the ternary AgCuZnzeolite, was the most efficient antimicrobial sample in terms of the amount of added silver.
efficiency of two natural zeolites from Turkey, which consist mainly of clinoptilolite, in the removal of zinc ions from aqueous solutions. The adsorption behavior of both zeolites was
Papaioannou et al studied the long term effect of natural zeolite with and without the antibacterial chlortetracycline upon the concentrations of certain vitamins (vitamin A and vitamin E) and minerals (K, Na, P, Ca, Mg, Cu and Zn) in blood and body tissues of the sow.
The removal of heavy metal ions by natural zeolites E. Erdem a, N. Karapinar b,R.Donat a, ∗ a Department of Chemistry, Faculty of Science and Arts, Pamukkale University, 20017 Denizli, Turkey
Apr 02, 2015 · There are so many natural zeolites in existence that it is virtually impossible to provide a reliable single comparative analysis between all zeolites vs. AZOMITE®, but below is a comparison of some of the trace minerals in AZOMITE® vs. one example of a natural zeolite currently on the market.