摘要
以壳聚糖作为吸附剂用于二元混合染料溶液的脱色.实验测定了活性紫、酸性大红在壳聚糖上的吸附特性,结果表明,两种染料在壳聚糖上的吸附等温线符合Langmuir模型,其中活性紫和酸性大红的饱和吸附量分别为685和967mg/g,吸附平衡常数分别为0.319和0.0251L/mg,吸附过程遵从假一级吸附动力学模型.在活性紫、酸性大红的混合溶液中,当吸附剂的投加量不足时,活性紫优先被吸附.
Color removal of binary dye mixture,Reactive Violet （RV） and Acid Scarlet （AS）,by adsorption on chitosan was investigated. It was shown that the adsorption isotherms of the two dyes from single solute solutions follow the Langmuir equation. The saturation amounts of RV and AS adsorbed are 685 and 967 mg/g,respectively. The adsorption equilibrium constants are 0.319 and 0.0251 L/mg for RV and AS,respectively. The adsorption processes follow the pseudo-first-order kinetic model. In mixed solution of RV and AS,AS is preferentially adsorbed in the case of insufficient dosage of chitosan.
出处
《常熟理工学院学报》
2010年第10期53-57,共5页
Journal of Changshu Institute of Technology
基金
山东省自然科学基金项目(No.Y2008B12)资助
关键词
壳聚糖
吸附
染料
脱色
Chitosan
dye
adsorption
color removal
