Generación de energía eléctrica mediante un fotobiorreactor con microalgas “Chlorella sp.”

Environmental pollution and lack of electrical energy have led to the use of photobioreactors for the production of electricity that is friendly to the environment. The design of a photobioreactor has been used for the production of electricity using as fuel the microalgae Chlorella sp., Which was manufactured using copper and zinc electrodes. Maximum values of 0.93179 ± 0.0323 V and 23.79 ± 0.9516 mA were generated on days 25 and 22 respectively; as well as a maximum power and current density of 4.71441 ± 0.12861 W/cm2 and 401.5873 mA/cm2. The conductivity, pH and density values increased from 25.499 ± 1.286 mS.cm-1, 7 and 1.151x106 ± 0.041 x106 cells/mL corresponding to the first to 76.8 ± 1.0896 mS.cm-1, 8.97 ± 0.1897 and 1.527x 107 ± 0.024 x107 cells/mL on days 27, 15 and 25 respectively, in which they showed their maximum values. Fourier Transform spectrophotometry (FTIR) shows the characteristic bands of the presence of C = O, N - H, C - N, O - H and N - H bonds present in microalgae. On the other hand, the SEM shows the formation of a porous biofilm on the zinc and copper electrodes; This result shows that a new form of electricity production has been achieved by generating high voltage and current values, using low-cost materials.