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    • 35. 发明申请
    • REMOVAL OF METALS FROM WATER
    • 从水中去除金属
    • WO2010120882A1
    • 2010-10-21
    • PCT/US2010/031033
    • 2010-04-14
    • OHIO UNIVERSITYBOTTE, Gerardine, G.
    • BOTTE, Gerardine, G.
    • C02F1/461
    • C02F1/4678C02F2101/16C02F2101/20C02F2201/46135C02F2201/4618C02F2209/02C02F2209/06Y02W10/37
    • A method of purifying water is provided that includes applying a voltage to an electrolytic cell (10) that includes an anode (14), a cathode (16) and an alkaline electrolyte composition having a pH value of about (11) or less. The alkaline electrolyte composition (13) includes at least one waste metal ion to be reduced, and a sacrificial reductant, such as urea, ammonia or a combination thereof, to be oxidized. According to the disclosed method, the voltage is applied across the cathode (16) and the anode (14) and is sufficient to reduce the at least one waste metal ion to form at least one elemental metal species at the cathode (16), and to oxidize the sacrificial reductant at the anode (14). Additionally, the applied voltage does not affect the generation of hydrogen at the cathode (16) and/or oxygen at the anode (14).
    • 提供了一种净化水的方法,其包括向包括阳极(14),阴极(16)和pH值为约(11)或更小的碱性电解质组合物的电解池(10)施加电压。 碱性电解质组合物(13)包括至少一种待还原的废金属离子,以及待氧化的牺牲还原剂,例如脲,氨或其组合。 根据所公开的方法,电压跨过阴极(16)和阳极(14)施加,并且足以减少至少一种废金属离子以在阴极(16)处形成至少一种元素金属物质,以及 以在阳极(14)处氧化牺牲还原剂。 此外,施加的电压不影响阴极(16)和/或阳极(14)处的氧气的产生。