Kanagawa Academy of Science and Technology, KSP Building West 614, 3-2-1 Sakado, Takatsu-ku, Kawasaki, Kanagawa 213-0012, Japan.
Water Res. 2010 Feb;44(3):904-10. doi: 10.1016/j.watres.2009.09.060. Epub 2009 Oct 1.
A high-performance, environmentally friendly water treatment system was developed. The system consists mainly of an electrochemical and a photocatalytic oxidation unit, with a boron-doped diamond (BDD) electrode and TiO(2) photocatalyst, respectively. All electric power for the mechanical systems and the electrolysis was able to be provided by photovoltaic cells. Thus, this system is totally driven by solar energy. The treatment ability of the electrolysis and photocatalysis units was investigated by phenol degradation kinetics. An observed rate constant of 5.1 x 10(-3)dm(3)cm(-2)h(-1) was calculated by pseudo-first-order kinetic analysis for the electrolysis, and a Langmuir-Hinshelwood rate constant of 5.6 microM(-1)min(-1) was calculated by kinetic analysis of the photocatalysis. According to previous reports, these values are sufficient for the mineralization of phenol. In a treatment test of river water samples, large amounts of chemical and biological contaminants were totally wet-incinerated by the system. This system could provide 12L/day of drinking water from the Tama River using only solar energy. Therefore, this system may be useful for supplying drinking water during a disaster.
开发了一种高性能、环保的水处理系统。该系统主要由电化学和光催化氧化单元组成，分别采用掺硼金刚石（BDD）电极和 TiO(2)光催化剂。机械系统和电解所需的所有电力都可以由光伏电池提供。因此，该系统完全由太阳能驱动。通过苯酚降解动力学研究了电解和光催化单元的处理能力。通过拟一级动力学分析，计算出电解的表观速率常数为 5.1 x 10(-3)dm(3)cm(-2)h(-1)，通过光催化动力学分析，计算出 Langmuir-Hinshelwood 速率常数为 5.6 microM(-1)min(-1)。根据以往的报告，这些值足以实现苯酚的矿化。在对河水样本的处理测试中，系统完全湿式焚烧了大量的化学和生物污染物。该系统仅使用太阳能每天可从多摩川提供 12L 饮用水。因此，该系统在灾害期间可能有助于提供饮用水。
