蛭石
微生物种群生物学
食品科学
多不饱和脂肪酸
脂肪酸
陶瓷
流出物
化学
熔渣(焊接)
生物
材料科学
冶金
生物化学
细菌
环境科学
环境工程
有机化学
园艺
遗传学
作者
Ming Li,Qiaohong Zhou,Min Tao,Ying Wang,Lijuan Jiang,Zhenbin Wu
标识
DOI:10.1016/s1001-0742(09)60083-8
摘要
Comparisons of microbial community structure, in eight filter media of zeolites, anthracite, shale, vermiculite, ceramic filter media, gravel, steel slag and bio-ceramic, were undertaken by analyzing the phospholipid fatty acid (PLFA) composition. A total of 20 fatty acids in the range of C11 to C20 were determined but only 13 PLFAs were detected in steel slag. They consist of saturated fatty acids, branched fatty acids, monounsaturated fatty acids, and polyunsaturated fatty acids. The variation of fatty acids was revealed in the relative proportions of these fatty acids in different media. The aerobic prokaryotes were the predominant group in all media. The PLFA composition showed significant differences among the eight different media by Tukey's honestly test. It was found that steel slag was significantly different in the microbial community as compared to other filter media, probably due to its alkaline effluent. Steel slag alone is probably not a good choice of substratum in constructed wetlands. The principle components analysis (PCA) showed that zeolites, bio-ceramic, shale and vermiculite had a similar microbial community structure while steel slag and ceramic filter media were distinct from other media.
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