超声辅助CaO改性粉煤灰对Mn^(2+)吸附性能研究  

Research on the preparation of ultrasound-assisted CaO modified fly ash and its adsorption to Mn^(2+)

作　　者：曹书勤[1] 金春雪[1] 缑星[1] 李珂昕[1] 

机构地区：[1]信阳师范学院化学化工学院,河南信阳464000

出　　处：《信阳农业高等专科学校学报》2013年第2期106-108,112,共4页Journal of Xinyang Agricultural College

基　　金：河南省科技攻关项目[112102310579]

摘　　要：以CaO和粉煤灰为原料,超声辅助制备改性粉煤灰,利用SEM、FTIR对其微观形貌进行观察及结构表征,考察其制备及吸附条件对锰离子的吸附性能的影响。结果表明:制备时,当CaO与粉煤灰的质量比为1:10,超声时间为15min;吸附时,废水pH为6,吸附时间为120min,吸附剂用量为20g/L时,Mn2+去除率达91.2%。The modified fly ash was prepared with calcium oxide through ultrasonic - assisted method. Ob.~erve its mi- crostructure and structure index by SEM, FTIR. Investigate the influence to the removal rate of the preparation condition and the adsorption condition. The result shows that： when the mass ratio of the calcium oxide and fly ash is 1：10, the time of cuhrasound - assisted is 15min and with the adsorption conditions the waste water pH = 6, adsorption time 120min,the mass of adsorbent 20g/L, the removal rate reach to 91.2%.

关 键 词：超声辅助 氧化钙改性 粉煤灰 锰离子 

分 类 号：X703.2[环境科学与工程—环境工程]