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Abstract
Iicroorgani ”111S are the first forms of appeared lite 011 the earth.
Phosphorou i an ssential and non-substituted macrouutrient element
for the urvival of all living forms of life. Pho phate rocks are nonrenewable
re erve of phosphorus which feed pho pilate fertilizer industry
The phosphate deposit of Abu-Tartur area in southern ” estern Desert is
the bigger pho pbete depo itt in Egypt \ here it P20s content range
from about _2-_ -%.
The phosphate rocks contain 11 ually gangue minerals other than
francolite which is the main bearing mineral of phosphorus which include
calcite. dolomite. quartz and clay minerals. Many rar and toxic elements
are frequently incorporated in the pho phate rock .uch as As. d 11,
Cr, Zn, U, Th and RE . The biological pr essing of Abu-Tartur
pho phate rock, for P105 upgrading and minimizing the toxic and
radioactive element ill rhe fioal product i the main target of the current
rudy.
llaborative mineralogical and chemical analytical technique are
used III the current . rudy to iuve ugate the original and biologically
treated amples a well a obtained tractions. The analytical techniqu s
include XRD. JR, SEM-DX, lCP- IS and wet-chemical analysis. The
mineralogical constituents of the phosphate sampl s and fractions are
determin d by XRD analy i whereas anion group are investigated by
infrared method. The EDX analysi attached to the ’canning electron
microscope are usually applied for semi-quantitative quality control
during experimeural work. The obtained re ulrs are rec ufirm d through
chemical aualy 1 by usiug spectrophorometer and JC’P-M techniques.