| http://www.w3.org/ns/prov#value | - In some embodiments, the hydrogen utilization system is separate from the hydrogen recovery system, while in other embodiments, the hydrogen recovery system may contain a hydrogen utilization system, such as a fuel cell, to utilize some or all of the recovered hydrogen. [0063] A fuel cell is a device that combines hydrogen and oxygen, for example from the air, to produce electric power without com
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