Biosorption Of Uranium from Trachytic Rocks
Algae are efficient and cheap bio-sorbents as the requirement of nutrient by algae is little. Based on
statistical analysis on algae potentiality in
biosorption, it has been reported that algae
absorb about 15.3% -84.6%, which is higher as compared to other microbial
bio- sorbents. Biosorption of metal ions occurs on the
cell surface by means of ion exchange method.
Marine algae has the capacity to absorbed metals
like Cd, Ni, Pb through chemical groups on their
surface.
Biosorption by algae requires high metal uptake and selectivity by substrate and suitable mechanical properties. Of all the algae, brown algae have been proven the most effective and promising. Their basic biochemical constitution is responsible for this enhanced
performance. More specifically, it is the properties of
their cell wall constituents which are chiefly
responsible for metal uptake. Biosorption of the
metallic cations to the algal cell wall
component is essentially a surface process.
The field and radiometric survey indicate that the trachytic rocks are
the main rock type in the investigated area, which contains secondary uranium minerals. Ulva
lactuca are used to capture the uranium elements from the trachytic rocks where
the analysis indicate that it leaching
the uranium content by 91% to 98% as well as, it change in the chemical
composition of the
mineral content, as some elements disappear or decreased while other elements
are increased, such as columbite (Fe,Mn)Nb2O6.The
columbite contains Nb more than Ta because it carry Uranium, the treatment of
samples with Ulva luctuca led to
decreasing of Nb and U from 7.24% to 0.23% because Nb and U adsorbed on the Ulva luctuca.
The above Article originally got published at SciFedJournal of Fermentation & Microbial Technology in 2017, To have a glance
please visit: Click Here