摘要： 采用CaCl₂对浒苔进行处理，研制出浒苔基吸附剂。通过静态吸附实验考察了该吸附剂对结晶紫的吸附性能。并进行了表面形貌和官能团分析。研究结果表明，吸附剂投加量、pH、吸附时间和温度对吸附性能影响较大。吸附过程符合伪二级动力学方程和Langmuir等温吸附模式，为快速吸附和单分子层吸附，其最大吸附量为1 000 mg/g。吸附机理是染料分子与浒苔细胞壁里纤维素和果胶中的—OH、—C—O等官能团之间存在静电吸引、氢键作用以及范德华力的作用。

关键词: 浒苔, 结晶紫, 吸附, 最大吸附量

Abstract: Enteromorpha prolifera adsorbent(EA) has been prepared by treating enteromorpha prolifera with CaCl₂ solution, the adsorption capability of the adsorbent for crystal violet by static adsorption experiments investigated. The surface morphology and surface functional groups of EA have been analyzed. The analytical methods include scanning electron microscopy(SEM) and fourier transformed infrared(FT-IR). The research results show that adsorbent dosage, pH, contact time and temperature have relatively great influences on adsorption capability. The adsorption process complies with pseudo-second-order-kinetics equation and Langmuir isothermal adsorption model, and is rapid and monolayer adsorption process. The maximum adsorption capacity of EA for CV reaches 1 000 mg/g. The adsorption mechanisms are that there has been electrostatic attraction between dye molecules and -OH, -C-O, etc. functional groups of cellulose and pectin in enteromorpha prolifera cell walls, hydrogen bond action, and van der Waals forces action.

Key words: enteromorpha prolifera, crystal violet, adsorption, maximum adsorption capacity

中图分类号: 

• X703.1