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Adaptability of microbial inoculators and their contribution to degradation of mineral oil and PAHs
Alternative TitleAdaptability of microbial inoculators and their contribution to degradation of mineral oil and PAHs
Song XY1; Song YF1; Sun TH1; Zhou QX1; Zhang W1; Zhang L1
2006
Source PublicationJOURNAL OF ENVIRONMENTAL SCIENCES
ISSN1001-0742
Volume18Issue:2Pages:310-317
AbstractFive dominant bacteria strains(Acetobacter sp., Alcaligenes sp., Micrococcus sp., Arthrobaeter sp. and Bacillus sp.) and five fungi strains (Cephalosporium sp. I, Cephalosporium sp. II, A sperolus sp. I, Aspergillus sp. II and Fusarium sp.) isolated from petroleum-contaminated soil were used to assess the potential capability of mineral oil and PAH enhanced degradation separately and jointly using the batch liquid medium cultivation with diesel oil spiked at 1000 mg/L. The experiment was performed on a reciprocal shaker in the darkness at 25 degrees C to 30 degrees C for 100 d. The dynamic variation in the activity of microbial inoculators in each treatment and the degradation of the target pollutants during the period of experiment were monitored. Results showed a more rapid biodegradation of mineral oil and PAHs at the beginning of the experiment (about 20 d) by dominant bacteria, fungi and their mixture than that of the indigenous microorganisms, however, thereafter an opposite trend was exhibited that the removal ratio by indigenous microorganisms was superior to any other dominant treatments and the tendency lasted till the end of the experiment, indicating the limited competitive capability of dominant microorganisms to degrade the contaminants, and the natural selection of indigenous microorganisms for use in the removal of the contaminants. At the end of the experiment, the removal ratio of mineral oil ranged from 56.8 % to 79.2 % and PAHs ranged from 96.8 % to 99.1 % in each treatment by microbial inoculators.
Other AbstractFive dominant bacteria strains(A cetobacter sp., Alcdigenes sp., Micrococcus sp., Arthrobacter sp. and Bacillus sp.) and five fungi strains (Cephalosporium sp. Ⅰ, Cephalosporlum sp. Ⅱ, Aspergillus sp. Ⅰ, Aspergillus sp. Ⅱ and Fusarium sp.) isolated from petroleum-contaminated soil were used to assess the potential capability of mineral oil and PAH enhanced degradation separately and jointly using the batch liquid medium cultivation with diesel oil spiked at 1000 mg/L. The experiment was performed on a reciprocal shaker in the darkness at 25℃ to 30℃ for 100 d. The dynamic variation in the activity of microbial inoculators in each treatment and the degradation of the target pollutants during the period of experiment were monitored. Results showed a more rapid biodegradation of mineral oil and PAHs at the beginning of the experiment (about 20 d) by dominant bacteria, fungi and their mixture than that of the indigenous microorganisms, however, thereafter an opposite trcnd was exhibited that the removal ratio by indigenous microorganisms was superior to any other dominant treatments and the tendency lasted till the end of the experiment, indicating the limited competitive capability of dominant microorganisms to degrade the contaminants, and the natural selection of indigenous microorganisms for use in the removal of the contaminants. At the end of the experiment, the removal ratio of mineral oil ranged from 56.8 % to 79.2 % and PAHs ranged from 96.8 % to 99.1% in each treatment by microbial inoculators,
KeywordPOLYCYCLIC AROMATIC-HYDROCARBONS CONTAMINATED SOIL BIOREMEDIATION SEDIMENT BACTERIUM dominant microorganism indigenous microorganism mineral oil PAHs biodegradation
Indexed ByCSCD
Language英语
CSCD IDCSCD:2619725
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/148074
Collection中国科学院金属研究所
Affiliation1.中国科学院
2.中国科学院金属研究所
Recommended Citation
GB/T 7714
Song XY,Song YF,Sun TH,et al. Adaptability of microbial inoculators and their contribution to degradation of mineral oil and PAHs[J]. JOURNAL OF ENVIRONMENTAL SCIENCES,2006,18(2):310-317.
APA Song XY,Song YF,Sun TH,Zhou QX,Zhang W,&Zhang L.(2006).Adaptability of microbial inoculators and their contribution to degradation of mineral oil and PAHs.JOURNAL OF ENVIRONMENTAL SCIENCES,18(2),310-317.
MLA Song XY,et al."Adaptability of microbial inoculators and their contribution to degradation of mineral oil and PAHs".JOURNAL OF ENVIRONMENTAL SCIENCES 18.2(2006):310-317.
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