Self-Sustainable Nutrients Reutilization Associated to Electricity Generation from Plant Microbial Fuel Cells

Apollon, Wilgince; Luna-Maldonado, Alejandro Isabel; Kamaraj, S.; Vidales-Contreras, Juan Antonio; Rodríguez-Fuentes, Humberto; Gómez-Leyva, Juan Florencio; Maldonado-Ruelas, Víctor Arturo; Ortiz-Medina, Raúl Arturo

doi:10.2139/ssrn.4032234

Cited by 2 publications

(1 citation statement)

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“…BES can be incorporated with plants into a novel microbial technology known as plant microbial fuel cell or p-MFC (Tongphanpharn et al, 2023). Such bioreactors integrate photosynthetic reactions from plants to generate bioelectricity by exploiting the soil microbial communities at the rhizosphere (Apollon et al, 2022). The zone of soil that surrounds a plant root and is impacted by the root's biology and chemistry is referred to as the rhizosphere.…”

Section: Introductionmentioning

confidence: 99%

Bioelectricity production and bioremediation potential of Withania somnifera in plant microbial fuel cells with food wastes as enrichment

Bhattacharya

Bose

Ganti

et al. 2023

Preprint

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In plant microbial fuel cells or p-MFCs living plants photosynthesize between two electrodes. The plant exudes organic waste material from the roots. In the rhizosphere, bacteria consume these wastes by oxidizing them in contrast to the atmosphere that reduces it. This redox reaction along with photosynthesis can be harnessed as an energy source in the form of bioelectricity. In this work, the plant Withania somnifera (L.) Dunal was used for generating bioelectricity from the root exudates and organic matter available in the soil. An open circuit voltage of 930 ± 21 mV was achieved between multiple cycles of operation. The cell voltage further increased to 1260 ± 140 mV with enrichment in the form of discards from vegetable matter. The peak recorded voltage was 1400 mV. Graphite fibre felt electrodes ensured uniform microbial growth with power densities that were achieved at 57 mW/m2 and 84 mW/m2 with and without enrichment respectively. ATR-FTIR demonstrated complete degradation of specific compounds attached to the carbon matrix in the soil along with the polysaccharide content from the enrichments. Additionally, this work also monitored the changes in soil pH and its homogeneity, the impact of photosynthetically active radiation, humidity, and the presence of CO2 in the air, and how it affects plant growth and ultimately the microbes at the rhizosphere which accounted for the bioremediation and the resultant bioelectricity production. SEM imaging further confirmed the importance of anaerobic environment and electrode properties that allow the growth of conductive biofilms from the electrochemically active microbes present in the soil.

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Section: Introductionmentioning

confidence: 99%

Bioelectricity production and bioremediation potential of Withania somnifera in plant microbial fuel cells with food wastes as enrichment

Bhattacharya

Bose

Ganti

et al. 2023

Preprint

View full text Add to dashboard Cite

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Livestock’s Urine-Based Plant Microbial Fuel Cells Improve Plant Growth and Power Generation

et al. 2022

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Plant microbial fuel cells (P-MFCs) are sustainable and eco-friendly technologies, which use plant root exudates to directly nourish the electrochemically active bacteria (EABs) to generate sustainable electricity. However, their use in evaluating plant growth has been insufficiently studied. In this study, interconnection between plant growth and the production of bioelectricity was evaluated by using P-MFCs inoculated with 642.865 mL ≅ 643 mL of livestock’s urine such as cow urine, goat urine, and sheep urine. The greatest mean stem diameter of 0.52 ± 0.01 cm was found in P-MFC-3 inoculated with goat urine, while the P-MFC-2 treated with cow urine reached a higher average number of roots with a value of 86 ± 2.50 (95% improvement) (p < 0.05). Besides, P-MFC-4 presented greater height of 50.08 ± 0.67 cm. For polarization curve experiment a higher maximum power density of 132 ± 11.6 mW m−2 (931 mA m−2) was reached with cow urine; in turn, with regard to the long-term operation, the same reactor indicated a higher maximum average power density of 43.68 ± 3.05 mW m−2. The study’s findings indicated that Stevia P-MFC inoculated with urine was a good option to increase the biomass amount for the agricultural plants along with power generation. Further, this study opens the way for more investigation of evaluating the impact of P-MFC on plant growth.

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Self-Sustainable Nutrients Reutilization Associated to Electricity Generation from Plant Microbial Fuel Cells

Cited by 2 publications

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Bioelectricity production and bioremediation potential of Withania somnifera in plant microbial fuel cells with food wastes as enrichment

Bioelectricity production and bioremediation potential of Withania somnifera in plant microbial fuel cells with food wastes as enrichment

Livestock’s Urine-Based Plant Microbial Fuel Cells Improve Plant Growth and Power Generation

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