Tags

Type your tag names separated by a space and hit enter

The separation of uranium ions by natural and modified diatomite from aqueous solution.
J Hazard Mater. 2010 Sep 15; 181(1-3):700-7.JH

Abstract

In this work the natural and the surfactant modified diatomite has been tested for ability to remove uranium ions from aqueous solutions. Such controlling factors of the adsorption process as initial uranium concentration, pH, contact time and ionic strength have been investigated. Effect of ionic strength of solution has been examined using the solutions of NaCl, Na(2)CO(3) and K(2)SO(4). The pseudo-first order and the pseudo-second order models have been used to analyze the adsorption kinetic results, whereas the Langmuir and the Freundlich isotherms have been used to the equilibrium adsorption data. The effects of the adsorbent modification as well as uranium adsorption on the diatomite surface have been studied using X-ray powder diffraction, scanning electron microscopy and FTIR spectroscopy. The maximum adsorption capacities of the natural and the modified diatomite towards uranium were 25.63 micromol/g and 667.40 micromol/g, respectively. The desorptive solutions of HCl, NaOH, Na(2)CO(3), K(2)SO(4), CaCO(3), humic acid, cool and hot water have been tested to recover uranium from the adsorbent. The highest values of uranium desorption (86%) have been reached using 0.1M HCl.

Authors+Show Affiliations

Department of Environmental Chemistry and Bioanalytics, Faculty of Chemistry, Nicolaus Copernicus University, Torun, Poland. sprynsky@yahoo.comNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

20542374

Citation

Sprynskyy, Myroslav, et al. "The Separation of Uranium Ions By Natural and Modified Diatomite From Aqueous Solution." Journal of Hazardous Materials, vol. 181, no. 1-3, 2010, pp. 700-7.
Sprynskyy M, Kovalchuk I, Buszewski B. The separation of uranium ions by natural and modified diatomite from aqueous solution. J Hazard Mater. 2010;181(1-3):700-7.
Sprynskyy, M., Kovalchuk, I., & Buszewski, B. (2010). The separation of uranium ions by natural and modified diatomite from aqueous solution. Journal of Hazardous Materials, 181(1-3), 700-7. https://doi.org/10.1016/j.jhazmat.2010.05.069
Sprynskyy M, Kovalchuk I, Buszewski B. The Separation of Uranium Ions By Natural and Modified Diatomite From Aqueous Solution. J Hazard Mater. 2010 Sep 15;181(1-3):700-7. PubMed PMID: 20542374.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The separation of uranium ions by natural and modified diatomite from aqueous solution. AU - Sprynskyy,Myroslav, AU - Kovalchuk,Iryna, AU - Buszewski,Bogusław, Y1 - 2010/06/12/ PY - 2010/02/20/received PY - 2010/05/08/revised PY - 2010/05/16/accepted PY - 2010/6/15/entrez PY - 2010/6/15/pubmed PY - 2010/10/29/medline SP - 700 EP - 7 JF - Journal of hazardous materials JO - J Hazard Mater VL - 181 IS - 1-3 N2 - In this work the natural and the surfactant modified diatomite has been tested for ability to remove uranium ions from aqueous solutions. Such controlling factors of the adsorption process as initial uranium concentration, pH, contact time and ionic strength have been investigated. Effect of ionic strength of solution has been examined using the solutions of NaCl, Na(2)CO(3) and K(2)SO(4). The pseudo-first order and the pseudo-second order models have been used to analyze the adsorption kinetic results, whereas the Langmuir and the Freundlich isotherms have been used to the equilibrium adsorption data. The effects of the adsorbent modification as well as uranium adsorption on the diatomite surface have been studied using X-ray powder diffraction, scanning electron microscopy and FTIR spectroscopy. The maximum adsorption capacities of the natural and the modified diatomite towards uranium were 25.63 micromol/g and 667.40 micromol/g, respectively. The desorptive solutions of HCl, NaOH, Na(2)CO(3), K(2)SO(4), CaCO(3), humic acid, cool and hot water have been tested to recover uranium from the adsorbent. The highest values of uranium desorption (86%) have been reached using 0.1M HCl. SN - 1873-3336 UR - https://www.unboundmedicine.com/medline/citation/20542374/The_separation_of_uranium_ions_by_natural_and_modified_diatomite_from_aqueous_solution_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(10)00652-7 DB - PRIME DP - Unbound Medicine ER -