Abstract
Micro photosynthetic power cell (µPSC) is an electrochemical device that generates electricity by harnessing electrons and protons from the electron transport chains of photosynthesis (in the presence of light), and respiration (in the absence of light). µPSC is a potential power source for low and ultra-low power applications. The electron transport mechanisms to harness electrons are classified as direct and mediated. The mechanisms for working of µPSCs based on mediated electron transport are presented in literature. However, the impact of electrons being harnessed on the metabolic activities of the microorganisms has not been discussed in any significant detail. This work provides a theoretical analysis to address this lacunae by connecting the working mechanisms of µPSC to the processes of photosynthesis and respiration. Considering the production of one mole of glucose as a basis, the equations involved in the important steps of photosynthesis and respiration are developed. The developed equations are linked to the working mechanisms of µPSC. We propose that a µPSC can generate power, without inhibiting the micro-organism’s regular metabolic activities if excess water and carbon dioxide are available during photosynthesis and respiration in its anode chamber.
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