Enhancement of uranium bioaccumulation by a Citrobacter sp. via enzymically‐mediated growth of polycrystalline NH4UO2PO4

Abstract The objective of this work was to study the effect of pH and ionic matrix on product release and on the removal of uranyl ion by a Citrobacter . sp phosphatase enzyme‐catalysed reaction. An improvement in the efficiency of uranyl removal was obtained by incorporating ammonium acetate (NH 4 Ac) into the solution. It was confirmed using X‐ray diffraction (XRD), and other analytical techniques, that the insoluble, cell‐bound product was NH 4 UO 2 PO 4 .