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Article

Bioelectricity Generation and Production of Ornamental Plants in Vertical Partially Saturated Constructed Wetlands

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Departamento de Ingeniería Civil, Tecnológico Nacional de México/Instituto Tecnológico Superior de Misantla, Km 1.8 Carretera a loma del Cojolite, Misantla, Veracruz, C.P. 93821, Mexico
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Sustainable Regional Development Academy, El Colegio de Veracruz, Xalapa, Veracruz 93164, Mexico
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Division of Postgraduate Studies and Research, Tecnológico Nacional de México/Instituto Tecnológico Superior de Misantla, Km 1.8 Carretera a loma del Cojolite, Misantla, Veracruz, C.P. 93821, Mexico
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Tecnológico Nacional de México/Instituto Tecnológico Superior de Huatusco. Av. 25 Poniente No. 100, Col. Reserva Territorial, Huatusco, Veracruz, C.P. 94100, Mexico
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Master of Engineering in Tecnológico Nacional de México/Instituto Tecnológico Superior de San Andrés Tuxtla, San Andrés Tuxtla, Veracruz, C.P. 95804, Mexico
*
Author to whom correspondence should be addressed.
Water 2021, 13(2), 143; https://doi.org/10.3390/w13020143
Received: 19 November 2020 / Revised: 26 December 2020 / Accepted: 5 January 2021 / Published: 9 January 2021
Energy production in constructed wetlands is a little-known field, as is the operation of vertical partially saturated constructed wetlands (VPS-CWs) that promote both aerobic and anaerobic microbial interactions. By doing so, bacterial degradation is increased, becoming the main mechanism of pollutant removal in constructed wetlands (CWs). For the first time, the generation of bioelectricity, together with the production of ornamental plants in vertical partially saturated constructed wetlands during the treatment of domestic wastewater, was evaluated. Six VPS-CW systems functioned as bioelectricity generators, where the systems were filled with red volcanic gravel and activated carbon as anode and cathode. Three systems were planted with Zantedeschia aethiopica and three with Canna hybrids plants. The development was measured through mother plants and shoots produced every 60 days. The input and output of each VPS-CW was monitored using control parameters such as BOD5, phosphates (P-PO4), and total Kjeldahl nitrogen (TKN). Bioelectricity, power, voltage, and current measurements were performed every 15 days for a period of 7 months. It was found that the VPS-CWs used as biobatteries in combination with the use of domestic wastewater as a substrate improved the development of the two evaluated plant species and stimulated growth and germination of new shoots. No significant differences were found between the different treatments (p ≤ 0.05). Likewise, an average efficient removal of BOD5 (98%) for both systems without statistical differences was observed (p ≤ 0.05), but for TKN and P-PO4, significant differences (p ≤ 0.05) were found between systems planted with Z. aethiopica (TKN: 65%; P-PO4: 20%) and Canna hybrids (TKN: 69%; P-PO4: 27%). This method of water treatment and bioelectricity production with Canna hybrids was an efficient system that generated a great electric current (140 mA/m2), voltage (750 mV), and electric power (15 mW/m2), compared with those observed in systems with Z. aethiopica (60 mA/m2, 500 mV, 9 mA/m2). View Full-Text
Keywords: bioelectricity; constructed wetlands; microbial combustion cells; ornamental plants bioelectricity; constructed wetlands; microbial combustion cells; ornamental plants
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MDPI and ACS Style

González-Moreno, H.R.; Marín-Muníz, J.L.; Sánchez-Dela-Cruz, E.; Nakase, C.; Del Ángel-Coronel, O.A.; Reyes-Gonzalez, D.; Nava-Valente, N.; Sandoval-Herazo, L.C. Bioelectricity Generation and Production of Ornamental Plants in Vertical Partially Saturated Constructed Wetlands. Water 2021, 13, 143. https://doi.org/10.3390/w13020143

AMA Style

González-Moreno HR, Marín-Muníz JL, Sánchez-Dela-Cruz E, Nakase C, Del Ángel-Coronel OA, Reyes-Gonzalez D, Nava-Valente N, Sandoval-Herazo LC. Bioelectricity Generation and Production of Ornamental Plants in Vertical Partially Saturated Constructed Wetlands. Water. 2021; 13(2):143. https://doi.org/10.3390/w13020143

Chicago/Turabian Style

González-Moreno, Humberto R.; Marín-Muníz, José L.; Sánchez-Dela-Cruz, Eddy; Nakase, Carlos; Del Ángel-Coronel, Oscar A.; Reyes-Gonzalez, David; Nava-Valente, Noemí; Sandoval-Herazo, Luis C. 2021. "Bioelectricity Generation and Production of Ornamental Plants in Vertical Partially Saturated Constructed Wetlands" Water 13, no. 2: 143. https://doi.org/10.3390/w13020143

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