کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5749169 | 1619146 | 2017 | 8 صفحه PDF | دانلود رایگان |
- Wheat straw, corn-cobs and sugarcane bagasse take up large amounts of oil.
- The three materials harbor hydrocarbonoclastic microorganisms.
- Inoculating oily liquid media with the three materials separately led to biodegradation of oil.
The plant waste-products, wheat straw, corn-cobs and sugarcane bagasse took up respectively, 190, 110 and 250% of their own weights crude oil. The same materials harbored respectively, 3.6Â ÃÂ 105, 8.5Â ÃÂ 103 and 2.3Â ÃÂ 106Â gâ1Â cells of hydrocarbonoclastic microorganisms, as determined by a culture-dependent method. The molecular, culture-independent analysis revealed that the three materials were associated with microbial communities comprising genera known for their hydrocarbonoclastic activity. In bench-scale experiments, inoculating oily media with samples of the individual waste products led to the biodegradation of 34.0-44.9% of the available oil after 8 months. Also plant-product samples, which had been used as oil sorbents lost 24.3-47.7% of their oil via their associated microorganisms, when kept moist for 8 months. In this way, it is easy to see that those waste products are capable of remediating spilled oil physically, and that their associated microbial communities can degrade it biologically.
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Journal: Environmental Pollution - Volume 227, August 2017, Pages 468-475