An assessment of the biodegradation of petroleum hydrocarbons in contaminated soil using non-indigenous, commercial microbes

被引:22
|
作者
Mohammed, Danelle
Ramsubhag, Adesh
Beckles, Denise M. [1 ]
机构
[1] Univ W Indies, Dept Chem, St Augustine, Trinidad Tobago
[2] Univ W Indies, Dept Life Sci, Fac Sci & Agr, St Augustine, Trinidad Tobago
来源
WATER AIR AND SOIL POLLUTION | 2007年 / 182卷 / 1-4期
关键词
biodegradation; contaminated soil non-indigenous microorganisms; petroleum tropical environments;
D O I
10.1007/s11270-007-9346-8
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
A study was conducted to determine the efficiency and effectiveness of two commercial microbial based bioremediation products compared to indigenous tropical microorganisms in a small-scale trial. The oil and grease content of the samples was monitored as an indication of the levels of petroleum hydrocarbon during the experiment. The indigenous enriched culture generally biodegraded the petroleum hydrocarbon to a greater extent than the commercial products and media controls early in the bioremediation process (0-5 days). However, as time progressed the extents of biodegradation were not significantly different between treatments until late in the bioremediation process (after 18 days). Of the two commercial products, one was more effective, reducing the level of oil and grease by 52.5% over the 3 week study. However, neither commercial product was able to meet the manufacturer's stated level of 95% removal within three weeks. Commercial microbial-based bioremediation products may be used with some success in tropical environments, however location-specific trials may be required to ensure that the best commercial product is selected. As an alternative, the selective enrichment of indigenous microorganisms may result in similar performance at a reduced cost.
引用
收藏
页码:349 / 356
页数:8
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