Hoping resolve uranium release caused many harmful environmental impacts
by genetic engineering bacteria, which is considered desirable and an
innovative environmental-friendly water remediation strategy. Here, we
report the great U deoxygenation potential of E. coli. DH5α W1 which was
introduced the Dsr A gene of sulfate-reducing bacteria to strengthen its
deoxygenation performance for deoxygenating U (VI) to U (IV) and
reducing it’s toxic. In static adsorption, the bacteria will undergo a
release phenomenon immediately after a super-adsorption stage, but the
process of U(VI) deoxygenation was not affected. Through TEM, XPS and
FTIR, infer feature of U(Ⅵ) how to migration and deoxygenation in the
cell. The cells can reach up to 23.65 mmol of U per g of bacterial wet
biomass through active biosorption to enrich U, at 90min, the U (IV)
content in the bacteria can account for as high as 94% of the
bio-immobilized U (VI). Results presented in this work will help to
understand bioaccumulation characteristics better of strong
deoxygenation bacteria and create an effective material to remove U.