Question

in a uranyl contaminated aquifer, there is sulfate, nitrate, and ferrihydrite. use thermodynamics calculations to predict the sequence of electron accepting processes in that aquifer.

After what terminal electron acceptor(s) and before what terminal electron acceptors would uranyl be reduced? In order to stimulate uranyl reduction

Answer 1

SOLUTION:-

The geochemistry at the U(VI)- sullied FRC site is mind boggling, and cocontaminants including nitrate, oil hydrocarbons, and chlorinated hydrocarbons (e.g., chlorinated solvents, polychlorinated biphenyls) are experienced .

Other vivaciously ideal terminal electron acceptors, for example, oxygen, nitrate, Fe(III), and chloro-natural mixes can meddle with proficient U(VI) decrease. For example, oxidized nitrogen species can repress U(VI) decrease and reoxidize lessened U(IV) to U(VI) . Fe(III) oxides influence uranium speciation and portability, and these unpredictable connections are under escalated examination.

Further, chloro-natural electron acceptors may influence U(VI) decrease, yet these cooperations have not been investigated.

Concentrates on bacterial uranium decrease have to a great extent concentrated on the outstanding metal-and sulfate-diminishing microscopic organisms. Proof for the nearness of Anaeromyxobacter spp. in FRC residue affected with uranium, nitrate, and chloro-natural mixes and their metabolic flexibility warrants investigation of uranium decrease by Anaeromyxobacter dehalogenans.

press hydroxides rival uranium as the terminal electron acceptor and retard its decrease and precipitation.

Examinations with Anaeromyxobacter dehalogenans strain 2CP-C demonstrated that U(VI) decrease happened at lessened rates following the expansion of Fe(III) oxide. Aggressive hindrance is likely the reason for the diminished U(VI) decrease rates in strain 2CP-C societies revised with Fe(III) oxide.

Expansion of acetic acid derivation to animate microbial breath. In stage I, Geobacter species are the prevalent living beings, Fe(III) is decreased, and microbial decrease of dissolvable U(VI) to insoluble U(IV) expels uranium from the groundwater. In stage II, Fe(III) is drained, sulfate is lessened, and sulfate-diminishing microbes prevail.