Accumulation of thorium ion using various microoganisms.

Accumulation of Thorium and Uranium by Microbes – the Effect of pH, Concentration of Metals, and Time Course on the Accumulation of Both Elements Using Streptomyces levoris

The removal of radionuclides, such as uranium (U) and thorium (Th) from aqueous solutions, especially from contaminated sources, seems to be a significantly useful subject for exploiting unused or abandoned energy resources. In this regard, efforts have been especially concentrated on studying the accumulation of U using microorganisms, such as the actinomycetes, bacteria, fungi, and yeasts. 14...

Application of response surface methodology for thorium(IV) removal using Amberlite IR-120 and IRA-400: Ion exchange equilibrium and kinetics

In this work, thorium (IV) removal from aqueous solutions was investigated in batch systems of cationic and anionic resins of Amberlite IR-120 and IRA-400. In this way, the effects of pH, initial Th(IV) concentration and the amount of adsorbent were investigated. A Central Composite Design (CCD) under Response Surface Methodology (RSM) was employed to determine the optimized condition. The resu...

assessment of the efficiency of s.p.g.c refineries using network dea

data envelopment analysis (dea) is a powerful tool for measuring relative efficiency of organizational units referred to as decision making units (dmus). in most cases dmus have network structures with internal linking activities. traditional dea models, however, consider dmus as black boxes with no regard to their linking activities and therefore do not provide decision makers with the reasons...

Relationship Between Ion Accumulation and Plant Biomass of Alfalfa Under Salt Stress

Abstract Salinity is one of the major abiotic challenges influencing plant productivity worldwide. To examine the response of two alfalfa cultivars (Bami and Hamedani) to six levels of water salinity (0, 25, 50, 75, 100, 125 mM L-1 NaCl), a glasshouse experiment was conducted at the College of Agriculture, Shiraz University, Shiraz, Iran in 2008. The results showed that in Bami (which appeared...

Arsenic accumulation in various plant types