Fig. 5: A tentative model for U removal and δ238U during U flow in granite fracture network in the Äspö HRL. | Communications Earth & Environment

Fig. 5: A tentative model for U removal and δ238U during U flow in granite fracture network in the Äspö HRL.

From: Deep anoxic aquifers could act as sinks for uranium through microbial-assisted mineral trapping

Fig. 5: A tentative model for U removal and δ238U during U flow in granite fracture network in the Äspö HRL.

The degradation of PVC plasticizer is promoted by SRB resulting in the formation of bicarbonate and sulfide. Formation of sulfides in water (HS-(aq) and subsequently as FeS precipitates) is followed by several U removal pathways, including U immobilization on the surface of FeS and pyrite and U(IV) co-precipitation with calcite through structural incorporation.

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