Department of Chemistry, Tongji University, Shanghai, 200092, China.
Environ Sci Pollut Res Int. 2016 May;23(10):10050-7. doi: 10.1007/s11356-016-6218-z. Epub 2016 Feb 11.
A hydrothermal electrocatalytic oxidation (HTECO) method is adopted to treat the biorefractory and toxic 2,4-dichlorophenoxyacetic acid (2,4-D) herbicides wastewater on nano-Pt/Ti electrode in the existence of H2O2. Comparisons for the removal of 2,4-D and total organic carbon (TOC) have been carried out between HTECO with individual electrochemical oxidation (EO) and hydrothermal catalytic oxidation (HTCO), showing that high mineralization efficiency was obtained in HTECO process. The possible factors resulting in the high removal efficiency in HTECO process have been studied by investigating the properties of the electrode and solution in hydrothermal condition, the amount of active radicals, the decay kinetic, and evolution of main intermediates of 2,4-D. Thus, an enhanced mechanism for HTECO method for the treatment of herbicides wastewater has been obtained.
采用水热电催化氧化（HTECO）法在纳米 Pt/Ti 电极上处理生物难降解和有毒的 2,4-二氯苯氧乙酸（2,4-D）除草剂废水，并在 H2O2 存在下进行。通过与单独的电化学氧化（EO）和水热催化氧化（HTCO）比较，考察了 HTECO 对 2,4-D 和总有机碳（TOC）的去除效果，结果表明，HTECO 过程具有较高的矿化效率。通过研究水热条件下电极和溶液的性质、活性自由基的量、衰减动力学以及 2,4-D 主要中间产物的演变，探讨了 HTECO 过程中高去除效率的可能因素。因此，获得了一种用于处理除草剂废水的 HTECO 方法的增强机制。
