Department of Engineering, and Sustainable Development, Mid Sweden University, SE-83125 Östersund, Sweden.
J Hazard Mater. 2011 Sep 15;192(3):1171-7. doi: 10.1016/j.jhazmat.2011.06.024. Epub 2011 Jun 17.
This paper demonstrates significant effects on phenanthrene degradation in diesel contaminated soil by the addition of organic amendments such as whey and fermented whey. Both amount of amendment added and mode of administration was shown to be decisive. There was a strong positive effect on the (14)C-mineralization of phenanthrene by multiple (bi-weekly) additions of fermented whey 210 mg dw kg(-1) soil dw (FW multi) and also by single dose addition of 2100 mg dw sweet whey kg(-1) soil dw (SW high). The most prominent effects on phenanthrene degradation kinetics were a five to fifteen fold increase in the linear growth term (k(2)) and a 23-27% increase in bioavailability factor S(0) for SW high and FW multi respectively. Also, total mineralization at the end of the experiment increased from 46% in the control to 66 and 71% respectively and the lag time was reduced from 21 to 15 days by multiple addition of fermented whey. The most significant stimulating effects on phenanthrene degradation kinetics could be attributed to lactate and vitamins. This study demonstrates a more complex dependence of carbon sources and growth factors for an aromatic compound such as phenanthrene in comparison to hexadecane.
本文展示了在受柴油污染的土壤中添加有机改良剂（如乳清和发酵乳清）对菲降解的显著影响。添加的改良剂的量和施用方式都被证明是决定性的。通过多次（每两周一次）添加 210mgdwkg(-1)土壤干重的发酵乳清（FW 多）和单次添加 2100mgdw 甜乳清 kg(-1)土壤干重（SW 高），对菲的（14)C-矿化有很强的正效应。对菲降解动力学的最显著影响是线性增长项（k(2)）增加了五到十五倍，生物可利用性因子 S(0)分别增加了 23-27%，分别为 SW 高和 FW 多。此外，与对照相比，实验结束时的总矿化率分别从 46%增加到 66%和 71%，并且通过多次添加发酵乳清，滞后时间从 21 天减少到 15 天。与十六烷相比，对菲降解动力学的最显著刺激作用可归因于乳酸盐和维生素。本研究表明，与十六烷相比，对于菲等芳香族化合物，碳源和生长因子的依赖性更为复杂。
