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What is it you're intending on doing with Geobacter sulfurreducens? They are extremophiles (I.E. it will be difficult for you to maintain the proper environment) who as you can tell from the name, reduce sulfur and other compounds into what they need to survive.
You mentioned something about them producing energy? I'll look into it, but off the top of my head if your objective is to generate energy this will be a very ineffective way of doing it as you'll likely put more electricity and money into providing an adequate environment than you'd get out of it.