TY - JOUR
T1 - Livestock’s Urine-Based Plant Microbial Fuel Cells Improve Plant Growth and Power Generation
AU - Apollon, Wilgince
AU - Vidales-Contreras, Juan Antonio
AU - Rodríguez-Fuentes, Humberto
AU - Gómez-Leyva, Juan Florencio
AU - Olivares-Sáenz, Emilio
AU - Maldonado-Ruelas, Víctor Arturo
AU - Ortiz-Medina, Raúl Arturo
AU - Kamaraj, Sathish Kumar
AU - Luna-Maldonado, Alejandro Isabel
N1 - Publisher Copyright:
© 2022 by the authors.
PY - 2022/10
Y1 - 2022/10
N2 - Highlights: What are the main findings? P-MFC inoculated with livestock’s urine positively influenced plant biomass. Cow urine significantly improved power generation in Stevia-MFC. What is the implication of the main finding? The study demonstrated that Stevia-MFC is a novel and cheaper system. Livestock’s urine showed great potential to improve P-MFC technology. 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.
AB - Highlights: What are the main findings? P-MFC inoculated with livestock’s urine positively influenced plant biomass. Cow urine significantly improved power generation in Stevia-MFC. What is the implication of the main finding? The study demonstrated that Stevia-MFC is a novel and cheaper system. Livestock’s urine showed great potential to improve P-MFC technology. 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.
KW - electrochemically active bacteria
KW - plant growth
KW - plant microbial fuel cell
KW - polarization curve
KW - power density
KW - power generation
UR - http://www.scopus.com/inward/record.url?scp=85139927854&partnerID=8YFLogxK
U2 - 10.3390/en15196985
DO - 10.3390/en15196985
M3 - Artículo
AN - SCOPUS:85139927854
SN - 1996-1073
VL - 15
JO - Energies
JF - Energies
IS - 19
M1 - 6985
ER -