Glucose and Applied Voltage Accelerated p-Nitrophenol Reduction in Biocathode of Bioelectrochemical Systems.

ABSTRACT: p-Nitrophenol (PNP) is common in the wastewater from many chemical industries. In this study, we investigated the effect of initial concentrations of PNP and glucose and applied voltage on PNP reduction in biocathode BESs and open-circuit biocathode BESs (OC-BES). The PNP degradation efficiency of a biocathode BES with 0.5 V (Bioc-0.5) reached 99.5 ± 0.8%, which was higher than the degradation efficiency of the BES with 0 V (Bioc-0) (62.4 ± 4.5%) and the OC-BES (59.2 ± 12.5%). The PNP degradation rate constant (k_PNP) of Bioc-0.5 was 0.13 ± 0.01 h^-1, which was higher than the k_PNP of Bioc-0 (0.024 ± 0.002 h^-1) and OC-BES (0.013 ± 0.0005 h^-1). PNP degradation depended on the initial concentrations of glucose and PNP.

SUBMITTER: Wang X 

PROVIDER: S-EPMC5881249 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature