Special Issue 2, December 2018
Article Number: 04
Download [PDF]

Treatment of Uranium and Heavy Metals on Soil and in Groundwater

Choi, J.
Pages 495-498

Abstract—The adsorption of heavy metals and uranium by the samples was influenced by soil constituents, and increased with
increasing Pb, Ni, Zn, Cd, and U concentrations. Microorganisms were also compared with these abiotic soil constituents for
their ability to adsorb these metals. Dead cells adsorbed the largest quantity of all heavy metals than live cells and other soil
components. At pH 6.0, the uptake percentage of U(VI) by dead cells was higher than that of any of the other metal ions. On
the basis of amounts of adsorption on adsorbents, the selectivity sequences were varied. The most common sequences were U
>> Pb > Cd ≈ Zn > Ni. The results verified the importance of geochemical parameters of soils such as type of clay mineral,
oxide mineral content, and organic content, for controlling metal uptake. The results also suggest that bacterial membrane cells
can be successfully used in the treatment of mixed metal-contaminated wastes.

Keywords—heavy metal, uranium, Vertisol, smectite, kaolinite, microorganism, adsorption