FIELD: oil and gas industry.
SUBSTANCE: invention can be used in gas and oil production industry for associated crude iodine production from iodine-lean confined groundwater. The method is implemented by a sequence of electrochemical iodide ion oxidation, molecular iodine sorption on carbon, electrochemical reduction of iodine to iodides, and desorption. All stages are performed in the same chemical reactor represented by a sorption column. Activated carbon with minimum iodine adsorption capacity of 1,000 mg/g is used as a sorbent. Graphite electrode at the column bottom is used as an anode, copper cathode in the form of plate at the column top is used as cathode. After the carbon is saturated with iodine, electrode polarity is reversed to desorb iodine from carbon in the form of iodide ions. Confined groundwater, including one with low iodine content, is used as iodine source.
EFFECT: enhanced iodine production efficiency.
2 cl, 1 dwg, 1 tbl, 1 ex
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