固定化烟曲霉吸附染料后的解吸平衡及动力学研究

对羧甲基纤维素钠(CMC)固定化灭活烟曲霉小球中的2种活性染料的解吸剂进行了选择,并对其解吸平衡和解吸动力学进行了研究.结果表明,pH值为12.0的75%乙醇溶液对吸附在CMC固定化灭活烟曲霉小球中的活性艳蓝KN-R和活性艳红K-2BP的解吸效果较好;一级指数衰减方程能很好地描述对2种活性染料的解吸动力学;解吸平衡数据均可以用Freundlich等温模型来拟合.

Desorption equilibrium and kinetics for dyes absorbed on immobilized inactive Aspergillus fumigatus

The choice of desorbent, desorption equilibrium and desorption kinetics for reactive brilliant blue KN-R and reactive brilliant red K-2BP, which was absorbed on inactive Aspergillus fumigatus immobilized by caboxymethyl- cellulose sodium (CMC), was investigated. The desorption abilities for reactive brilliant blue KN-R and reactive brilliant red K-2BP absorbed on inactive Aspergillus fumigatus immobilized by CMC were good by 75% ethanol at pH 12.0. The first-order exponential decay equation could describe well the desorption kinetics for reactive brilliant blue KN-R and reactive brilliant red K-2BP adsorbed on inactive Aspergillus fumigatus immobilized by CMC. Their desorption equilibrium data fitted well with the Freundlich desorption equilibrium model.