From Figure 2 d, with the first injection, it is evident that acetate levels increased to 341 mg L −1 before following a decreasing trend, indicating that the injection of Sn caused a temporary increase in acetogenic activity.
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The Effect of Bismuth and Tin on Methane and Acetate Production in a Microbial Electrosynthesis Cell Fed with Carbon Dioxide.
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The cathode is highly significant as it acts as the site for microorganism growth, electron transfer, and electron uptake by the biofilm.