College of Environmental and Energy Engineering, Beijing University of Technology, 100 Pingleyuan, Chaoyang District, Beijing 100124, China.
Bioresour Technol. 2011 Jan;102(2):805-13. doi: 10.1016/j.biortech.2010.08.119.
The contributions of loosely bound extracellular polymeric substances (LB-EPS), tightly bound EPS (TB-EPS), residual sludge (the sludge left after EPS extraction) and functional groups such as amine, carboxyl, phosphate and lipid on aerobic granules on biosorption of four different dyes (Reactive Brilliant Blue KN-R (KN-R), Congo Red (CR), Reactive Brilliant Red K-2G (RBR) and Malachite Green (MG)) were investigated. EPS may be responsible for biosorption of cationic dyes. However, residual sludge always made greater contribution than that of EPS. The biosorption mechanisms were dependent on the functional groups on aerobic granules and dyes' chemical structures. The lipid and phosphate groups might be the main binding sites for KN-R biosorption. Amine, carboxyl, phosphate and lipid were all responsible for the binding of CR. The lipid fractions played an important role for RBR biosorption. For MG, the phosphate groups gave the largest contribution.
考察了松散结合胞外聚合物（LB-EPS）、紧密结合 EPS（TB-EPS）、剩余污泥（EPS 提取后剩余的污泥）以及胺、羧基、磷酸和脂质等官能团对好氧颗粒吸附四种不同染料（活性艳蓝 KN-R（KN-R）、刚果红（CR）、活性艳红 K-2G（RBR）和孔雀石绿（MG））的贡献。EPS 可能负责阳离子染料的吸附。然而，剩余污泥的贡献总是大于 EPS。吸附机制取决于好氧颗粒和染料化学结构上的官能团。脂质和磷酸基团可能是 KN-R 吸附的主要结合位点。胺基、羧基、磷酸和脂质都与 CR 的结合有关。脂质部分在 RBR 吸附中起着重要作用。对于 MG，磷酸基团的贡献最大。
