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Different kinds of mineral nutrients(NO3-N, NH4-N and PO4-P) were applied in the simulated oil-polluted seawater for enhancing oil biodegradation in the N/P ratio 10:1 and 20: 1. Although indigenous microorganisms have the ability to degrade oil, adding nutrients accelerated biodegradation rates significantly. For the group amended with NO3-N and PO4-P in the ratio 10:1, the reaction rate coefficient was 4 times higher than the natural biodegradation. Chemical and microbiological analysis showed that the optimal N/P ratio in the system is 10: 1, and microorganisms tend to utilize nitrate rather than ammonium as N source.  相似文献
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概述了大气环境中SO2对金属材料腐蚀影响的主要研究方法和实验分析手段,并对比了各方法的优缺点,分析了大气环境因素对SO2腐蚀的影响作用,进一步探讨了SO2影响金属腐蚀研究的意义与发展趋势。  相似文献
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