摘要
以阴离子淀粉微球为载体,研究了微球对Cr3+的吸附行为,考察了pH、时间、温度、初始浓度等因素对其去除率的影响及对Cr3+的吸附动力学特性,结果表明,其吸附最适pH值为7~9,在吸附作用的前60 m in对Cr3+的吸附速率较快,在一定的温度范围内,随吸附温度的升高,吸附量及去除率增大,初始浓度越小去除率越大;且求得吸附表观活化能为Ea=2.213 kJ/mol。
The anion starch microspheres were used as carrier. The adsorption behavior of anion starch microspheres for Cr^3＋ was studied, and the influential factors were also discussed such as pH, time, termperature, initial metal ion concentration on removal rate of Cr^3＋. The kinetics of the adsorption process was also studied. The results showed that the optimum pH value of adsorption was 7 - 9, the adsorption rate was quick during the first 60 min. At certain degree, the adsorption capacity and the removal rate increased with temperature raising, the removal rate was big while initial metal ion concentration was small ; and the apparent adsorption activation energy is 2.213 kJ/mol.
出处
《应用化工》
CAS
CSCD
2009年第8期1093-1097,共5页
Applied Chemical Industry
基金
国家自然科学基金资助项目(50573046)
陕西科技大学研究生创新基金资助
