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首页> 外文期刊>African Journal of Biotechnology >Bioaugmentation efficiency of diesel degradation by Bacillus pumilus JLB and Acinetobacter calcoaceticus LT1 in contaminated soils
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Bioaugmentation efficiency of diesel degradation by Bacillus pumilus JLB and Acinetobacter calcoaceticus LT1 in contaminated soils

机译：短小芽孢杆菌JLB和钙乙酸不动杆菌LT1在污染土壤中对柴油的生物强化效率

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摘要

The abilities of diesel-degrading?Bacillus pumilus?JLB?and?Acinetobacter calcoaceticus?LT1?were tested in contaminated soils. The effect of nutrient supplementation on bioaugmented samples was also examined. The results show that bio-augmentation and biostimulation accelerated significantly (p < 0.05) the diesel degradation in the contaminated loam soil and sea sand. Supplementing fertilizers to the augmented loam samples did not result in a significantly higher degradation rate. Furthermore,?A. calcoaceticus?LT1?alone failed to stimulate higher degradation rates in sea sand unless further supplementation of fertilizer. The results from environmental scanning electron microscopy demonstrate the population increases, then decreases in augmented samples corresponding to the level of diesel degradation. Fungi-like microorganisms became dominant in contaminated loam soil at the end of the study but not in sea sand. The study shows that it is critical not only to understand the physiology of the inoculum but also how it affects microbial community structure and function before the microorganism being introduced in the contaminated soil.
机译：在受污染的土壤中测试了降解柴油的“短小芽孢杆菌”，“ JLB”和“醋酸钙不动杆菌” LT1的能力。还检查了营养补充剂对生物强化样品的影响。结果表明，在污染的壤土和海沙中，生物强化和生物刺激显着促进了柴油降解（p <0.05）。向增肥壤土样品中添加肥料不会导致明显更高的降解率。此外，？除非进一步补充肥料，否则单独使用钙乙酸钙（LT1）并不能刺激海沙中更高的降解率。环境扫描电子显微镜的结果表明，人口增加，然后增加的样品减少，这与柴油的降解程度相对应。在研究结束时，类真菌微生物在受污染的壤土中占主导地位，但在海沙中则没有。研究表明，不仅重要的是要了解接种物的生理学，而且在微生物被引入污染的土壤之前，接种物如何影响微生物群落的结构和功能也至关重要。

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