A quantitative evaluation method for wastewater toxicity based on a microbial fuel cell.
Ecotoxicol Environ Saf
; 183: 109589, 2019 Nov 15.
Article
em En
| MEDLINE
| ID: mdl-31509929
ABSTRACT
A microbial fuel cell (MFC) was successfully developed as a toxicity biomonitoring system to enable a quick response to wastewater with unknown toxicity in toxic events. The objective was to quantitatively assess the toxicity of wastewater by a rapid method. Different concentrations of formaldehyde were introduced into the anode chamber, which led to different stages of voltage change. A relationship between the linear slope of the voltage drop stage and the formaldehyde concentration was established through dose-response fitting results. This relationship makes it possible to convert an unknown toxicity of wastewater into the equivalent concentration of formaldehyde. The minimum detection limit in this study was 13â¯mg/L formaldehyde equivalents. As the toxicity of the wastewater increased, the test time could be reduced to as low as 921â¯s or even shorter, with a detection error of 3-12â¯mg/L. By using this evaluation method, oxidized tail gas scrubber wastewater was identified as the main toxic wastewater component in a phenol acetone production plant.
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1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Fontes de Energia Bioelétrica
/
Técnicas Biossensoriais
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Águas Residuárias
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Monitoramento Biológico
Idioma:
En
Revista:
Ecotoxicol Environ Saf
Ano de publicação:
2019
Tipo de documento:
Article