CEDEUS   >   Publicaciones   >   Científicas   >   A new method for sensing soil water content in green roofs using plant microbial fuel cells (2017)

A new method for sensing soil water content in green roofs using plant microbial fuel cells (2017)

Publicación de los investigadores Ignacio Vargas y Carlos Bonilla en revista "Sensors".

Posteado por Por Gianitsa Corral Fecha 28 de diciembre, 2017

Title

A new method for sensing soil water content in green roofs using plant microbial fuel cells (2017)

Publication Type

Journal Article

Year of Publication

2017

Authors

N. Tapia; C. Rojas; C. Bonilla; I. Vargas

Journal Title

Sensors

Keywords

biosensor; green roof; microbial fuel cells; Sedum; soil water content

Abstract

Green 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

DOI

10.3390/s18010071

Corresponding Author

Ignacio Vargas, itvargas@ing.puc.cl

Line (s) ofaccess and mobility

Critical resources

 

Compartir Contenido   Share on FacebookTweet about this on Twitter






Estamos en Facebook