Environmental electroactive consortia as reusable biosensing element for freshwater toxicity monitoring.
N Biotechnol
; 55: 36-45, 2020 Mar 25.
Article
in En
| MEDLINE
| ID: mdl-31562928
ABSTRACT
The development of tools to monitor water quality is mandatory in a scenario where clean water resources are decreasing. Here, the biosensing capability of an electroactive river sediment consortium was tested towards three model contaminants (glutaraldehyde, nickel(II) and chromium(III)). The proposed biosensor is a small membrane-less single chamber Microbial Fuel Cell (MFC), fabricated by 3D printing. Its semi-continuous mode of operation resulted in long-term current profile stability and reproducibility. A linear trend of response was obtained for glutaraldehyde in a concentration range of 5-1000â¯ppm. After the recovery of the electroactive consortium activity, the MFC-based biosensors were shown to be sensitive towards Ni(II) and Cr(III), at concentrations above 2â¯mgâ¯L-1. To effectively analyze biosensor response, a novel algorithm was proposed, offering advantages for the realization of energy-saving protocols for MFC-biosensor data transmission. Implementation of the device and method, from laboratory test to real environment, can offer a low cost in situ system for detection of water contaminants.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Biosensing Techniques
/
Environmental Monitoring
/
Geologic Sediments
/
Electricity
/
Fresh Water
Language:
En
Journal:
N Biotechnol
Journal subject:
BIOLOGIA MOLECULAR
/
ENGENHARIA BIOMEDICA
Year:
2020
Document type:
Article
Affiliation country:
Italy