Electrochemical Removal Of RhB And Lincomycin From Water

With the rapid development of society and economy, human beings are facing the increasingly severe environmental pollution problems. Among them, the issue of drinking water poses great threat to our safety and daily life. Therefore, researchers all over the world have devoted themselves to develop techniques to reduce the contamination of drinking water. Electrochemical method draws wide attention for its environmentally friendly, low cost, no secondary pollution, widely applicable features. In this article, the two electrchemical systems of Fe2O3/ACF and Pt/ACF offered promising way to degrade RhB and lincomycin. All over the world have devoted themselves to develop techniques to reduce the contamination of drinking water. Electrochemical method draws wide attention for its environmentally friendly, low cost, no secondary pollution, widely applicable features. In this article, the two electrchemical systems of Fe2O3/ACF and Pt/ACF offered promising way to degrade RhB and lincomycin.In the first part, Fe2O3 single-crystalline with different exposed facets were selectively synthesized via a facile hydrothermal route according to the reported methods. Scanning electron microscope (SEM) and Transmission electron microscopy(TEM) methods were used to characterize and verify the structure and the exposed facets of the samples. The resulted Fe2O3 single-crystalline nanosheets with exposed{110} dominant facets exhibited higher activity for degrading target pollutants while the counterpart with dominant exposed{001} facets possessed weaker activity. Meanwhile, RhB was taken as the target pollutant. From the experiment, the distinction results were mainly due to the reduction Fe(Ⅱ) produced during the electro-Fenton-like process Different electrochemical methods were taken to prove the generation of surface Fe(Ⅱ) and the stable properties of the surface Fe(Ⅱ) between the two samples. Furthermore,we interestingly found that the facets properties may contribute to the different behaviors of oxygen activation. The results showed that the surface of{110} possible has the potential to reduce more O2 to ·O2- through one-electron transfer than the{001} surface.In the second part, factors of current density, pH and concentration of were investigated in the Pt/ACF system.Lincomycin could be oxidized and degraded by the Pt oxidation from the liquid chromatogram results. At the same time, due to the adsorption properties of ACF, lincomycin and its oxidized products could be adsorbed on the surface of ACF, which could enhance the removal efficient of system and achieve the enrichment of antibiotics. Double-cell system verified the effect with the oxidation of the Pt electrode and the adsorption of ACF were synergistic rather than duplicate. However, the system could only promote the transformation of organic N to the inorganic N according to the change of NH4+ concentration. In the whole process, due to no other chemical reagent which could bring the secondary pollution, the method was quite environmental friendly.