不同传质方式和土壤含量的土壤泥浆体系中菲的生物降解
Biodegradation of phenanthrene in soil-slurry systems with different mass transfer regimes and soil contents.
作者信息
Woo Seung H, Lee Min W, Park Jong M
机构信息
Department of Chemical Engineering, Hanbat National University, San 16-1, Dukmyung-Dong, Yuseong-Gu, Daejeon 305-719, Republic of Korea.
出版信息
J Biotechnol. 2004 Jun 10;110(3):235-50. doi: 10.1016/j.jbiotec.2004.02.007.
The effect of soil contents and mass transfer rates on soil bioremediation was investigated. Phenanthrene, a 3-ring polycyclic aromatic hydrocarbon (PAH), was chosen as a model target compound. The biodegradation tests were performed in soil-slurry systems at two distinct mass transfer rates: fast in flasks tests at 150 rpm and slow in roller-bottle tests at 2 rpm. The rate of phenanthrene biodegradation was similar at low soil content (2 wt.%) in both slurry systems, but the rates at high soil contents (6 and 18 wt.%) were higher in the roller-bottle tests. The maximum utilization rate constant for sorbed-phase biodegradation obtained from curve fitting using a mathematical model was decreased in the flask tests with increasing soil content, while not decreased in the roller-bottle tests.
研究了土壤含量和传质速率对土壤生物修复的影响。菲，一种三环多环芳烃（PAH），被选为模型目标化合物。生物降解试验在土壤浆液系统中以两种不同的传质速率进行：在烧瓶试验中以150 rpm的速度快速传质，在滚瓶试验中以2 rpm的速度缓慢传质。在两种浆液系统中，低土壤含量（2 wt.%）时菲的生物降解速率相似，但在滚瓶试验中，高土壤含量（6 wt.%和18 wt.%）时的降解速率更高。使用数学模型通过曲线拟合得到的吸附相生物降解的最大利用率常数在烧瓶试验中随土壤含量增加而降低，而在滚瓶试验中没有降低。
Zotero 插件