Centro de Investigación y Desarrollo Tecnológico en Electroquímica S.C., Parque Tecnológico Querétaro, Sanfandila, 76703, Pedro Escobedo, Querétaro, Mexico.
Instituto de Ingeniería, Universidad Nacional Autónoma de México, 04510, CDMX, Mexico.
Chemosphere. 2020 Jul;250:126260. doi: 10.1016/j.chemosphere.2020.126260. Epub 2020 Feb 18.
The disinfection of helminth eggs and Escherichia coli contaminated aqueous solutions, was studied using an electro-Fenton reactor equipped with a polarized activated carbon (AC) packed bed and two chambers loaded with cation exchange resins. Experiments using different arrangements and operation conditions, revealed that effective elimination of Escherichia coli takes place in all electrochemical disinfection tests. For the more resistant helminth eggs however, adsorption, electro-oxidation and electro-Fenton experiments showed retention within the reactor and pathogen inactivation values of 0, 16, and 25%, respectively. Using helminth eggs concentration data in different sections of the reactor, optical microscopy analysis and an exploratory computer simulation, differences in the disinfection performance were explained and new recirculation and flow direction and polarization switching operation schemes were defined. The corresponding experiments revealed that the effective coupling between adsorption and electro-Fenton phenomena, all along the AC packed bed compartment, results in 100% inactivation of helminth eggs.
采用配备极化活性炭（AC）填充床和两个装有阳离子交换树脂的腔室的电芬顿反应器，研究了污染有蠕虫卵和大肠杆菌的水溶液的消毒。使用不同的布置和操作条件进行实验，结果表明，所有电化学消毒试验均能有效消除大肠杆菌。然而，对于更具抗性的蠕虫卵，吸附、电氧化和电芬顿实验表明，它们在反应器内保留，并且病原体失活值分别为 0、16 和 25%。利用反应器不同部位的蠕虫卵浓度数据、光学显微镜分析和探索性计算机模拟，解释了消毒性能的差异，并定义了新的循环和流动方向以及极化切换操作方案。相应的实验表明，沿 AC 填充床腔室有效结合吸附和电芬顿现象，可使蠕虫卵的灭活率达到 100%。
