Abstract:The high colority and hard to decolorization were the most important tasks on printing and dyeing waste water. The ability of inactivated aerobic granular sludge (AGS) to adsorb crystal violet (CV) from aqueous solutions using fixed bed column reactor were studied. Column adsorption studies were carried out at different bed heights, initial dye concentrations and flow rate. Column adsorption experimental data and corresponding parameters were obtained by Thomas model and bed depth service time (BDST) model. Results showed that as the height of adsorbent was increasing, breakthrough time and adsorption saturation time became longer. But when the initial dye concentrations and flow rate were increasing, breakthrough time and adsorption saturation time became shorter. Thomas model described column adsorption of CV kinetics well. When concentration of CV at 100mg/L, flow rate at 8.3mL/min and fixed bed height at 20cm, Thomas model showed good agreement with the experimental results (R2=0.9813). BDST model could predict breakthrough time accurately and average error were less than ten percent. Desorption of CV from AGS was using Ethyl alcohol absolute.
张彦灼, 李文静, 李军, 卞伟, 李芸, 陈光辉. 固定床中好氧颗粒污泥动态吸附结晶紫染料[J]. 中国环境科学, 2015, 35(6): 1726-1733.
ZHANG Yan-Zhuo, LI Wen-Jing, LI Jun, BIAN Wei, LI Yun, CHEN Guang-Hui. Fixed bed column study for the adsorption of crystal violet dye by aerobic granular sludge. CHINA ENVIRONMENTAL SCIENCECE, 2015, 35(6): 1726-1733.