摘要
通过静态吸附试验研究了粉煤灰基质滤料对废水中Mn2+的吸附性能,主要探讨了滤料投加量、吸附时间、原水浓度、振荡频率等因素对吸附效果的影响。结果表明:随着投加量增加,Mn2+去除率提高,单位吸附量线性下降;随着吸附时间延长,Mn2+去除率提高,超过80 min后提高幅度变缓,吸附过程符合二级动力学模型;振荡频率的增大对吸附有一定的促进作用,但超过200 r/min后提高不明显。
We have study the adsorption property of fly ash filter material on Mn2＋ in wastewater by the static experiment.And investigate the influence of the absorbent dosage,contact time,initial concentration and oscillation frequency on adsorption effect.The results indicate that the removal rate of Mn2＋ has improved with the increase of filter dosage while the adsorption capacity has decreased linearly.With the extension of adsorption time,the removal rate of Mn2＋ is enhanced,and it becomes slow after 80 min.The adsorption process complied with the secondary adsorption kinetics model.The acceleration of oscillation frequency promotes the adsorption process,but the promotion is not obvious after 200 r/min.
出处
《环保科技》
2011年第2期28-30,共3页
Environmental Protection and Technology
基金
江苏省省级环保科研项目(2009005)
江苏省高校自然科学研究资助项目(08KJ8610003)
关键词
粉煤灰
滤料
Mn2+
吸附
fly ash
filter material
Mn2＋
adsorption
