Developing a passive fluoride removal system for wastewaters and hydrogen reactivity in palladized mesoporous materials added to zero-valent iron

点击翻译按钮获取中文摘要

The proposed research is two-fold. One project is focused on developing a passive water treatment reactor to reduce fluoride concentrations from industrial wastewater levels to drinking water standards. Our previous work developed a reactor that reduced fluoride in water from hundreds of mg/l to approximately 4 mg/l, but water of this concentration is still too high to avert the development of fluorosis in humans if ingested for long periods. Published data exists to show that low concentrations of citrate ion facilitate the sequestration of fluoride in calcite. Our research will integrate citrate's ability to remove fluoride with our previous reactor design. The objective is to develop a reliable and passive technique to reduce the fluoride concentration of any wastewater to drinking water standards (World Health Organization recommends < 1.5 mg/l).