World Class University program of Chemical Convergence for Energy & Environment, School of Chemical and Biological Engineering, College of Engineering, Seoul National University, Seoul, Republic of Korea.
Trans R Soc Trop Med Hyg. 2013 Feb;107(2):124-8. doi: 10.1093/trstmh/trs008. Epub 2012 Oct 22.
Affordable water disinfection is key to reducing the waterborne disease experienced worldwide where resources are limited. A simple electrochemical system that can generate chlorine as a disinfectant from the electrolysis of sodium chloride is an appropriate technology to produce clean water, particularly if driven by solar energy. This study examined the affordability of an electrochemical chlorine generation system using solar energy and developed the necessary design information for its implementation.
A two-electrode batch reactor, equipped with commercial IrO(2)-coated electrodes and a solar panel (approximate area 0.2 m(2)), was used to produce chlorine from a 35g/L solution of NaCl.
Within 1 h, sufficient chlorine (0.8 g) was generated to produce clean drinking water for about 80 people for 1 day (target microorganism: Escherichia coli; daily drinking water requirement: 2 L per person; chlorine demand: 4 mg/L; solar power: 650 W/m(2) in Seoul, Korea. Small household batteries were demonstrated to be a suitable alternative power source when there is insufficient solar irradiation. Using a 1 m(2) solar panel, the reactor would take only 15 min in Seoul, Korea, or 7 min in the tropics (solar power 1300 W/m(2)), to generate 1 g of chlorine.
The solar-powered electrochemical chlorine generation system for which design information is provided here is a simple and affordable way to produce chlorine with which to convert contaminated water into clean drinking water.
在资源有限的情况下，提供负担得起的水消毒是减少全世界范围内经水传播疾病的关键。一种简单的电化学系统，能够通过电解氯化钠产生氯气作为消毒剂，是生产清洁水的合适技术，特别是如果由太阳能驱动的话。本研究考察了使用太阳能的电化学氯生成系统的负担能力，并开发了其实施所需的设计信息。
使用配备有商业 IrO2 涂层电极和太阳能电池板（约 0.2m2 面积）的两电极批处理反应器，从 35g/L 的 NaCl 溶液中产生氯气。
在 1 小时内，产生了足够的氯气（0.8g），可用于为大约 80 人生产清洁饮用水，持续 1 天（目标微生物：大肠杆菌；日饮用水需求：每人 2L；氯需求：4mg/L；太阳能：韩国首尔 650 W/m2）。当太阳能辐射不足时，小型家用电池被证明是一种合适的替代电源。使用 1m2 的太阳能电池板，在韩国首尔，该反应器只需 15 分钟，或在热带地区（太阳能 1300 W/m2）只需 7 分钟，即可产生 1g 氯气。
提供设计信息的这种太阳能驱动的电化学氯生成系统是一种简单且负担得起的方法，可以产生氯气，将受污染的水转化为清洁饮用水。
