| Diffusion models for adsorption kinetics of Zn(2+ ), Cd(2+ ) and Pb(2+ ) onto natural zeolite. | |
| | |
MedLine Citation:
|
PMID: 20818056 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
|
The kinetics of zinc, cadmium, and lead ions removal by natural zeolite-clinoptilolite has been investigated using an agitated batch adsorber. Batch experiments at constant temperature have been performed. The influence of agitation speed, initial heavy metals concentration and particle size of the sorbent on the removal efficiency of heavy metals from liquid phase have been studied. A decrease in the initial heavy metals concentration in aqueous solutions prolongs the time needed for equilibrium. Two kinetics models according to the Vermeulen's approximation and the parabolic diffusion model have been tested with the experimental data for adsorption of heavy metals onto natural zeolite. For the systems examined, the fit of the proposed models with the experimental data was shown to be equally good using both models. The diffusion coefficients are calculated from kinetic models of heavy metal ions and they are of the order from 10(-5) to 10(-6) cm(2)/min. The diffusion coefficients depend on initial concentration for both models. |
| | |
Authors:
|
Julija Taparcevska; Liljana Markovska; Bogdana Koumanova; Vera Meshko |
Related Documents
:
|
23346056 - A multi-scale modeling framework for individualized, spatiotemporal prediction of drug ... 22627076 - Comparison of methods for estimating the intraclass correlation coefficient for binary ... 22773076 - Supporting regenerative medicine by integrative dimensionality reduction. 22346626 - Improving prediction accuracy for wsn data reduction by applying multivariate spatio-te... 10803296 - Biophysical inputs into the software "mirdose". 15165866 - Homotypic variation of canine flexor tendons: implications for the design of experiment... |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: Water science and technology : a journal of the International Association on Water Pollution Research Volume: 62 ISSN: 0273-1223 ISO Abbreviation: Water Sci. Technol. Publication Date: 2010 |
Date Detail:
|
Created Date: 2010-09-06 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 9879497 Medline TA: Water Sci Technol Country: England |
Other Details:
|
Languages: eng Pagination: 1136-42 Citation Subset: IM |
Affiliation:
|
International Balkan University, Samoilova 10, 1000 Skopje, Republic of Macedonia. taparcevskajulija@yahoo.com |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Oil droplets and solid particles removal using circular separator with inclined coalescence mediums:...
Next Document: A comparative study of perchlorate degradation in acute toxicity and chronic toxicity.