摘要
以伊利石为原料制备伊利石负载壳聚糖吸附剂,并利用电镜扫描、X射线衍射及热重分析对吸附剂进行表征。研究了吸附剂对日落黄的吸附性能,考察了壳聚糖负载量、溶液pH值、吸附剂用量、吸附时间对吸附的影响。结果表明,壳聚糖负载量为1.3 g,pH值为5,吸附剂用量为0.2 g时,对日落黄的吸附效果较好。吸附过程可以很好地用准二级动力学方程描述,吸附等温线用Langmuir方程拟合效果优于Freundlich方程。
The adsorbent chitosan-coated illite was prepared using illite as raw materials. The adsorbent was characterized by scanning electron microscope, X-ray diffraction and thermogravimetric analysis. The adsorption behavior for sunset yellow was investigated, the effecting factors such as the chitusan load, solution pH value, adsorbent dosage, adsorption time were studied. The results showed that the adsorption have good value when the ehitosan load was 1.3 g, pH value was 5 and adsorbent dosage was 0.2 g. The adsorption process followed a pseudo-second order equation, the adsorption isotherm could be described very well by Langmuir equation rather than Freundlich equation.
出处
《非金属矿》
CAS
CSCD
北大核心
2014年第1期81-83,共3页
Non-Metallic Mines
关键词
伊利石
壳聚糖
吸附
日落黄
illite chitosan adsorption sunset yellow
