Augmentation of chloramphenicol degradation by Geobacter-based biocatalysis and electric field

Electroactive microorganisms and electrochemical technologies have been separately used for environmental remediation such as antibiotics removal, yet the efficiency of coupling these two methods chlorinated removal is poorly known. Here we tested synergy Geobacter sulfurreducens PCA, an electroactive bacteria, electrical field, on chloramphenicol removal. Removal increased two-fold by increasing temperature from 30°C to 37°C. The cyclic voltammograms chronoamperometry tests demonstrated that G. PCA catalyzed chemical reduction with electrode excusive electron donor. A critical voltage, ?0.6 ?0.5 V vs. Ag/AgCl, was discovered degradation increase rate about 2.62-folds, 31.06% 81.41%. Combined both field apparent constant reached 82.77% at V. Specially, combined even presented more robust compared (78.64%) without PCA. Mass spectrometry products indicates nitro into amine groups, dechlorination less toxic compounds. Overall, biocatalysis a promising method remove polluted environments.