| Phenolic water was unique difficult degrading by the bacteria treatment. The degradation of phenolic water was paid more and more attention. In this paper, TiO2-anthraquinone was used to modify the intermediate layer of a bipolar membrane (BPM), which was equiped in a cell for the elevctro-catalytic degradation of the phenolic water.The usage of the membrane technology, under the ultraviolet light, in the alkali anode chamber, the hydroxyl radical(·OH) was formed by the most special reaction to achieve the deep degradation. The phenol was degraded to CO2 and H2O or converted into a biochemical degradation of the production by this hydroxyl radical.How to promote water splitting at the intermediate layer and lower the IR drop of bipolar membrane (BPM) is the focus of BPM research. In the interlayer of bipolar membrane modified with nanometer-sized TiO2 as a photo-catalyst and the anthraquinone (abbreviated as Anth) as a photosensitizer. SEM and electrochemical workstation were used to characterize the BPMs.Ⅰ-Ⅴcurve, ion exchange capacity, swelling degree, changes of pH in anode were investigated. Experimental results showed that the sandwich-type BPM exhibited a several good properties:a higher efficiency for the water splitting in the interlayer, and a higher operation current density, lower impedance and working voltage. When the working current density is at 125 mA·cm-2, the working voltage is as low as 5.0 V under the UV illumination.The degradation process of phenol solution was measurmented by UV-visible spectrophotometry and high performance liquid chromatography. The mechanism of its degradation was discussed. The TiO2-anthraquinone modified bipolar membrane was investigated by SEM, electrochemical workstation and OH- permeability. Experimental results showed that the modified BPM enhanced membrane performance, and reduced membrane resistance and the energy consumption. In conditions of UV irradiation for 180min, the phenol was degraded to CO2 and H2O. |
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