Selenium content of rice,mixed plant foods and fish from Bangladesh |
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| Authors: | Julian E Spallholz PhD L Mallory Boylan M Mahmububur Rahman Daniel Katz J David Robertson A B M Zakaria |
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| Institution: | 1. Texas Tech University , Lubbock, Texas, 79409julian.spallholz@ttu.edu;3. Texas Tech University , Lubbock, Texas, 79409;4. University of Dhaka , Dhaka 1000, Bangladesh;5. Department of Chemistry and the Research Reactor , University of Missouri , Columbia, Missouri, 65211;6. Exonics Technology Center , Dhaka 1215, Bangladesh |
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| Abstract: | Static and dynamic adsorption studies of Co (II) ions have been undertaken at fixed pH and ionic strength taking binary biopolymeric beads of cross-linked calcium alginate and carboxy methylcellulose as biosorbents. The adsorption data were applied to Langmuir and Freundlich isotherm equations and various static parameters were calculated. The dynamic nature of adsorption process was quantified in terms of several kinetic constants such as rate constants for adsorption (K) and Lagergreen rate constant (K ad). The influence of various experimental parameters such as solid-to-liquid ratio, pH, and temperature, the presence of salts and chemical composition of biopolymeric beads were investigated on the adsorption of cobalt ions. |
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| Keywords: | Selenium arsenic diet rice fish Bangladesh |
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