粉煤灰基吸附剂处理染料废水的研究进展

Research Progress on the Treatment of Dye Wastewater by Fly Ash-Based Adsorbent

未改性粉煤灰对染料具有一定的吸附能力,而改性后的粉煤灰比表面积增大,活性位点增多,因此具有更优越的吸附性能。本文主要从酸、碱、盐、高温和复合改性等五个粉煤灰的改性方法综述了近些年改性粉煤灰处理染料废水的研究进展,并对粉煤灰基吸附剂未来研究方向进行了展望。

Unmodified fly ash has a certain adsorption capacity for dyes,while the modified fly ash has an increase in specific surface area and an increase in active sites,so it has superior adsorption performance.In this paper,the recent research progress in the treatment of dye wastewater by modified fly ash is reviewed from five modification methods:acid,alkali,salt,high temperature and compound modification,and the future research o fly ash-based adsorbent is prospected.