摘要
重金属污染是本世纪最值得关注的环境问题之一,铬作为一种常见的重金属,在工业上作用相当重要,得到了广泛应用,而六价铬的毒性要远大于三价铬,因此必须得到处理。纳米零价铁/多孔炭复合物磁性吸附剂具有性能优异、操作简便、重复使用较便利的特点,具有非常广阔的应用前景。本文主要对纳米零价/多孔炭复合物用于六价铬的去除进行了简要叙述。
Hexavalent chromium is widely used in industrial wastewater; it has high toxicity, so hexavalent chromium must be removed before the discharge of industrial wastewater. Porous carbon is a good adsorbent for Hexavalent chro- mium because of its excellent physical and chemical properties such as large specific surface area, high porosity and a- bundant groups etc. The problem of the industrial removal processes is the separation of the Cr-absorbed carbon materi- als. Traditional separation methods involved filtration or centrifugation, which are tedious, laborious, energy intensive and expensive. Based on these considerations above, we developed an economic in situ synthetic strategy to prepare ze- ro-valent iron （nZVI） supported on fish-scale-based porous carbon.
出处
《明胶科学与技术》
CAS
2015年第2期55-62,共8页
The Science and Technology of Gelatin
关键词
六价铬
纳米零价铁
多孔炭
吸附
porous carbon, scales, chromium （VI） , zero-valent iron, adsorption
