Xia Xing-hui, Zhou Jing-song, Yu Hui, Yang Zhi-feng
State Key Joint Laboratory of Environmental Simulation and Pollution Control, Institute of Environmental Sciences, Beijing Normal University, Beijing 100875, China.
Huan Jing Ke Xue. 2004 Jan;25(1):103-6.
Petroleum contaminants is one of the major pollutants in the Yellow River. Laboratory simulation experiments were carried out to study the natural biodegradation of the petroleum contaminants. When adding 10 mg/L petroleum contaminants to the Yellow River water samples containing 0 or 0.5 g/L sediment, the petroleum contaminants-degrading bacteria increased gradually after about one week of acclimatization. With the sediment content of 0.5 g/L, about 85% petroleum contaminants with the initial concentration of 11.64 mg/L in river water could be degraded within 63 days at 20 degrees C. The biodegradation rate was greatly influenced by the sediment content and the initial concentration of petroleum contaminants, and such effect was different from one degradation stage to another. In addition, the existence of sediment affected the biodegradation kinetics of petroleum contaminants.
石油污染物是黄河中的主要污染物之一。开展了实验室模拟实验来研究石油污染物的自然生物降解。向含有0或0.5 g/L沉积物的黄河水样中添加10 mg/L石油污染物后，经过约一周的驯化，石油污染物降解菌逐渐增加。在沉积物含量为0.5 g/L时，20℃条件下，河水中初始浓度为11.64 mg/L的约85%石油污染物可在63天内降解。生物降解速率受沉积物含量和石油污染物初始浓度的显著影响，且这种影响在不同降解阶段有所不同。此外，沉积物的存在影响了石油污染物的生物降解动力学。
