Quan Xiangchun, Zhang Yongming, Wang Jianlong, Shi Hanchang, Qian Yi
State Key Joint Laboratory of Environment Simulation and Pollution Control, Department of Environmental Science and Engineering, Tsinghua University, Beijing 100084, China.
Huan Jing Ke Xue. 2002 Jul;23(4):42-6.
An air lift inner-loop bioreactor packed with honeycomb-like ceramic carrier was immobilized with a 2,4-Dichlorophenol-degrading pure culture and was investigated to degrade 2,4-Dichlorophenol and phenol. In fed-batch operation mode, 2,4-DCP biodegradation rate increased with run numbers and followed zero-order kinetics model when it existed alone, but when 2,4-DCP was present in the mixture with phenol, phenol degradation rate had an apparent trend to increase whereas 2,4-DCP removal rate became slower and slower. In continuous operation, 2,4-DCP at the concentration ranged from 6.9 to 102.4 mg/L could be degraded well at the dilution rate of 0.16 h-1 and the average removal percentage was 96.5%. Carbon sources changed from 2,4-DCP to acetate sodium and peptone in the course of operation for 12 days did not cause the bacteria loss the DCP-degrading ability.
将固定有2,4-二氯苯酚降解纯培养物的蜂窝状陶瓷载体填充到气升式内环生物反应器中，用于研究其对2,4-二氯苯酚和苯酚的降解。在分批补料操作模式下，单独存在时，2,4-二氯苯酚的生物降解速率随运行次数增加，并遵循零级动力学模型；但当2,4-二氯苯酚与苯酚混合存在时，苯酚降解速率有明显上升趋势，而2,4-二氯苯酚的去除速率则越来越慢。在连续操作中，浓度范围为6.9至102.4 mg/L的2,4-二氯苯酚在稀释率为0.16 h-1时可被良好降解，平均去除率为96.5%。在为期12天的运行过程中，碳源从2,4-二氯苯酚变为醋酸钠和蛋白胨，并未导致细菌丧失降解二氯苯酚的能力。
