I noticed that the open cell voltage of a single chamber Plant MFC seems to drop significantly when I water the plants. Why does this occur?
Some details about the configuration are:
Plant MFC is contained in a pot
Anode- carbon felt
Cathode- Stainless Steel Wool
Plants- Vigna radiate
Anode and cathode distance is 3cm of compacted soil
Cheers in advance
Normally, there is a proportional relationship between humidity and voltage generation with a P-MFC. Moqsud et al. (2015), reported that the humidity factor influences the generation of electricity with P-MFCs. When the plants are under water stress, the performance of the voltage is reduced (Apollon et al., 2020). https://authors.elsevier.com/a/1bh-l15eiez%7EsH
Hi Choong,
I think the sudden drop in OCV after watering might be due to some disturbance in the biosystem or in connection. But OCV normally get recovered after some period once biosytem is stable. Make sure cathode is not too dipped.
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