%0 Journal Article
%T Biodegradation of benzo[a]pyrene in soil by Mucor sp. SF06 and Bacillus sp. SB02 co-immobilized on vermiculite
%A SU Dan
%A LI Pei-jun
%A FRANK Stagnitti
%A XIONG Xian-zhe
%A <br>SU Dan
%A LI Pei-jun
%A FRANK Stagnitti
%A XIONG Xian-zhe
%J 环境科学学报(英文版)
%D 2006
%I 
%X Two indigenous microorganisms, Bacillus sp. SB02 and Mucor sp. SF06, capable of degrading polycyclic aromatic hydrocarbons (PAHs) were co-immobilized on vermiculite by physical adsorption and used to degrade benzoa] pyrene (BaP). The characteristics of BaP degradation by both free and co-immobilized microorganism were then investigated and compared. The removal rate using the immobilized bacterial-fungal mixed consortium was higher than that of the freely mobile mixed consortium. 95.3% of BaP was degraded using the co-immobilized system within 42 d, which was remarkably higher than the removal rate of that by the free strains. The optimal amount of inoculated co-immobilized system for BaP degradation was 2%. The immobilized bacterial-fungal mixed consortium also showed better water stability than the free strains. Kinetics of BaP biodegradation by co-immobilized SF06 and SB02 were also studied. The results demonstrated that BaP degradation could be well described by a zero-order reaction rate equation when the initial BaP concentration was in the range of 10—200 mg/kg. The scanning electronic microscope (SEM) analysis showed that the co-immobilized microstructure was suitable for the growth of SF06 and SB02. The mass transmission process of co-immobilized system in soil is discussed. The results demonstrate the potential for employing the bacterial-fungal mixed consortium, co-immobilized on vermiculite, for in situ bioremediation of BaP.
%K biodegradation
%K Bacillus sp
%K SB02
%K Mucor sp
%K SF06
%K benzo[a]pyrene
%K immobilization
%K soil pollution<br>生物降解
%K 土壤污染
%K 蛭石
%K 污染化学
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=6CB1530875F53489BF1E81BD87B7F5E6&aid=262F4B12FA1910081EAE60DCEC7A090B&yid=37904DC365DD7266&vid=13553B2D12F347E8&iid=B31275AF3241DB2D&sid=FE01B30EDB347E58&eid=B169842BD52221DD&journal_id=1001-0742&journal_name=Journalofenvironmentalsciences(China)&referenced_num=2&reference_num=29