Abstract A TiO2 loaded carbon membrane termed, “TiO2/carbon electro-catalytic membrane” as anode (dead-end mode) and a stainless-steel mesh as cathode articulated an electrocatalytic membrane reactor (ECMR) to treat methylene blue (C16H18ClN3S.3H2O) wastewater. TiO2/carbon membrane was characterized by field emission scanning electron microscope, high resolution transmission electron microscope and atomic force microscope. Elemental analysis was done by energy dispersive X-ray spectroscopy, X-ray diffraction and X-ray photoelectron spectroscopy to ascertain TiO2 loading on the carbon membrane. A synthetic 200 ppm methylene blue (MB) solution with electrolyte (Na2SO4) of 15 g/L concentration was used as the feed. Novel electro-desorption effect was discovered in a fully adsorbed membrane. Another novel finding regarding the ECMR was the acidic pH of permeate. When ECMR applied voltage was set to 2.5 V and current to 8 mA, the current density was calculated as 0.56 mA/cm2. While the porosity of the carbon membrane was 32.6 % and the flow rate was set to 200 μL/min, the residence time was calculated as 5.74 min. The result showed that the chemical oxygen demand (COD) removal rate of 83.65 % and color removal rate of 99.94 % were obtained. Electric consumption of the ECMR setup for MB solution was 5.87 kW h/Kg COD. The difference between the effect of adsorption and electro-catalysis was also calculated. The degradation mechanism of MB was proposed by using high performance liquid chromatography – mass spectroscopy. The excellent performance of ECMR was attributed to the synergetic effect of electro-catalytic oxidation and membrane separation which increases its economic feasibility by reducing the costs associated with cleaning the membrane at industrial scale. The ECMR proved a good stability as well.

中文翻译：

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用于从废水中去除染料的电催化膜阳极

摘要 载有 TiO2 的碳膜称为“TiO2/碳电催化膜”作为阳极（死端模式）和不锈钢网作为阴极连接电催化膜反应器 (ECMR) 来处理亚甲蓝 (C16H18ClN3S.3H2O)废水。通过场发射扫描电镜、高分辨透射电镜和原子力显微镜对TiO2/碳膜进行了表征。通过能量色散 X 射线光谱、X 射线衍射和 X 射线光电子能谱进行元素分析，以确定碳膜上的 TiO2 负载。使用浓度为 15 g/L 的电解质 (Na2SO4) 合成的 200 ppm 亚甲蓝 (MB) 溶液作为进料。在完全吸附的膜中发现了新的电解吸效应。关于 ECMR 的另一个新发现是渗透物的酸性 pH 值。当 ECMR 施加的电压设置为 2.5 V 且电流设置为 8 mA 时，电流密度计算为 0.56 mA/cm2。碳膜的孔隙率为 32.6%，流速设定为 200 μL/min，停留时间计算为 5.74 min。结果表明，化学需氧量（COD）去除率为83.65%，颜色去除率为99.94%。MB 溶液的 ECMR 设置的电耗为 5.87 kW h/Kg COD。还计算了吸附作用和电催化作用之间的差异。利用高效液相色谱-质谱法提出了MB的降解机理。ECMR 的优异性能归因于电催化氧化和膜分离的协同效应，通过降低与工业规模清洗膜相关的成本来提高其经济可行性。ECMR 也证明了良好的稳定性。