摘要
采用单因子试验的方法,选择合适的改性剂,研究了粒径大小、吸附等温线、溶液pH值等因素对改性粉煤灰吸附性能的影响,并对改性粉煤灰吸附机理进行了研究。研究结果表明,改性灰的吸附效果优于粉煤灰,极大的提高了对难降解染料废水的去除能力,在pH值大于11,投加量为20g/L时,CODCr去除率可达95%以上。
The effects of particle size, adsorption isothermal curve, pH value of solution, etc. on the adsorbability of modified fly ash were studied using a method of one-factor experiment and selected proper modifier, and the adsorption mechanism of modified fly ash was studied, too. The results of the research show that the adsorption effect of modified fiy ash is better than that of fly ash, which greatly improves the removal ability for the wastewater from dyestuff industry that is hardly degradable. When pH value is above 11 and dosage is 20 g/L, the removal rate of COD may be as high as 95% or even higher.
出处
《工业用水与废水》
CAS
2005年第1期44-47,共4页
Industrial Water & Wastewater
关键词
改性粉煤灰
吸附材料
性能
modified fly ash
adsorbent material
property
