A New Method for Sensing Soil Water Content in Green Roofs Using Plant Microbial Fuel Cells
AbstractGreen roofs have many benefits, but in countries with semiarid climates the amount of water needed for irrigation is a limiting factor for their maintenance. The use of drought-tolerant plants such as Sedum species, reduces the water requirements in the dry season, but, even so, in semiarid environments these can reach up to 60 L m−2 per day. Continuous substrate/soil water content monitoring would facilitate the efficient use of this critical resource. In this context, the use of plant microbial fuel cells (PMFCs) emerges as a suitable and more sustainable alternative for monitoring water content in green roofs in semiarid climates. In this study, bench and pilot-scale experiments using seven Sedum species showed a positive relationship between current generation and water content in the substrate. PMFC reactors with higher water content (around 27% vs. 17.5% v/v) showed larger power density (114.6 and 82.3 μW m−2 vs. 32.5 μW m−2). Moreover, a correlation coefficient of 0.95 (±0.01) between current density and water content was observed. The results of this research represent the first effort of using PMFCs as low-cost water content biosensors for green roofs. View Full-Text
- Supplementary File 1:
PDF-Document (PDF, 386 KB)
Scifeed alert for new publicationsNever miss any articles matching your research from any publisher
- Get alerts for new papers matching your research
- Find out the new papers from selected authors
- Updated daily for 49'000+ journals and 6000+ publishers
- Define your Scifeed now
Tapia, N.F.; Rojas, C.; Bonilla, C.A.; Vargas, I.T. A New Method for Sensing Soil Water Content in Green Roofs Using Plant Microbial Fuel Cells. Sensors 2018, 18, 71.
Tapia NF, Rojas C, Bonilla CA, Vargas IT. A New Method for Sensing Soil Water Content in Green Roofs Using Plant Microbial Fuel Cells. Sensors. 2018; 18(1):71.Chicago/Turabian Style
Tapia, Natalia F.; Rojas, Claudia; Bonilla, Carlos A.; Vargas, Ignacio T. 2018. "A New Method for Sensing Soil Water Content in Green Roofs Using Plant Microbial Fuel Cells." Sensors 18, no. 1: 71.
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.