摘要
比较了经HCl和CaCl2,MgCl2改性后的煤渣对磷的吸附效果,研究了HCl改性煤渣对磷的吸附性能.结果表明,改性煤渣对磷的吸附能力从大到小依次为:HCl改性煤渣、CaCl2改性煤渣、MgCl2改性煤渣,其吸附量分别为47.24,19.58,14.50 mg/kg.原煤渣与HCl改性煤渣在振荡24 h后均达到吸附平衡,吸附量随初始磷浓度的增加而增加,对磷的吸附更符合Langmuir等温方程,对磷的最大理论吸附量为265.58 mg/kg.改性煤渣具有更好的除磷效果,可用HCl改性煤渣提高除磷效率.
The effect of phosphorus removal with HCl-,CaCl2-and MgCl2-modified coal cinder,and the phosphor adsorption characteristics of HCl-modified coal cinder were investigated in present study.The results showed that their capacity of phosphorus removal appeared in the order of HCl,CaCl2,MgCl2,being 47.24,19.58,14.50 mg/kg,respectively.Phosphorus adsorption on the HCl-modified coal cinder reached equilibrium in approximately 24 h,and the adsorption capacity of phosphorus increased with increasing initial phosphorus concentration.The adsorption for phosphorus was well fitted with the Langmuir isotherm equation,the maximum adsorption capacity being 265.58 mg/kg.It is concluded that modified coal cinders have satisfactory adsorption capacity for phosphorus and,therefore,can be utilized to enhance phosphorus removal.
出处
《西南大学学报（自然科学版）》
CAS
CSCD
北大核心
2011年第5期84-87,共4页
Journal of Southwest University(Natural Science Edition)
基金
863计划资助项目(2008AA06Z312)
重庆市科技攻关资助项目(CSTC
2009AB7028)
关键词
改性煤渣
磷吸附
吸附容量
modified coal cinder
phosphorus adsorption
adsorption capacity
