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首页> 外文期刊>Journal of Environmental Science and Health >Biodegradation of naphthalene, phenanthrene, and pyrene under anaerobic conditions
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Biodegradation of naphthalene, phenanthrene, and pyrene under anaerobic conditions

机译：厌氧条件下萘，菲和pyr的生物降解

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The biodegradation of naphthalene, phenanthrene, and pyrene were studied in batch reactors using an anaerobic acetate-fed enrichment culture developed from the Greater Peoria Sanitary District Wastewater Treatment Facility. Baseline kinetic experiments showed that maximum specific substrate utilization for the acetate-fed enrichment culture was 2.72 mg acetate/mg cell/day and the endogenous decay coefficient was 0.043 day~(-1). Maximum specific substrate utilization rates in mg substrate/mg cell/day for naphthalene, phenanthrene and pyrene were 0.57, 0.009 and 0.007, respectively. The half saturation constant K_s in mg /L were 0.075,0.01 and less than 0.01, respectively. The endogenous decay coefficient (in units of day~(-1)) in the presence of naphthalene, phenanthrene and pyrene were 0.06, 0.07 and 0.04, respectively. Results from this study indicated that naphthalene and phenanthrene were more easily biodegradable than pyrene. These results suggest that technologies using anaerobic biodegradation using a relatively simple enrichment culture from a wastewater treatment plant may be successful in treating PAH contaminated wastes.
机译：使用大皮奥里亚卫生区废水处理设施开发的厌氧乙酸盐喂养的浓缩培养物，在间歇反应器中研究了萘，菲和pyr的生物降解。基线动力学实验表明，醋酸盐富集培养的最大底物利用率为2.72 mg醋酸盐/ mg细胞/天，内源衰减系数为0.043 day〜（-1）。萘，菲和pyr的最大比底物利用率（毫克底物/毫克细胞/天）分别为0.57、0.009和0.007。以mg / L计的半饱和常数K_s分别为0.075、0.01和小于0.01。在萘，菲和pyr存在下的内生衰减系数（以天（-1）为单位）分别为0.06、0.07和0.04。这项研究的结果表明，萘和菲比pyr更容易生物降解。这些结果表明，使用来自废水处理厂的相对简单的浓缩培养物进行厌氧生物降解的技术可能成功地处理了受PAH污染的废物。

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