Effects of soil organic matter on the development of the microbial polycyclic aromatic hydrocarbons (PAHs) degradation potentials
| Autor: | Miao Xue, S.T. Lu, Yu Yang, Na Zhang, Shu Tao |
|---|---|
| Rok vydání: | 2011 |
| Předmět: |
chemistry.chemical_classification
Pollutant Persistent organic pollutant Bacteria Health Toxicology and Mutagenesis Soil organic matter General Medicine Toxicology complex mixtures Pollution Kinetics Soil Biodegradation Environmental Hydrocarbon chemistry Environmental chemistry Soil water Humin Soil Pollutants Humic acid Organic matter Polycyclic Aromatic Hydrocarbons Humic Substances Soil Microbiology |
| Zdroj: | Environmental Pollution. 159:591-595 |
| ISSN: | 0269-7491 |
| DOI: | 10.1016/j.envpol.2010.10.003 |
| Popis: | The microbial activity in soils was a critical factor governing the degradation of organic micro-pollutants. The present study was conducted to analyze the effects of soil organic matter on the development of degradation potentials for polycyclic aromatic hydrocarbons (PAHs). Most of the degradation kinetics for PAHs by the indigenous microorganisms developed in soils can be fitted with the Logistic growth models. The microbial activities were relatively lower in the soils with the lowest and highest organic matter content, which were likely due to the nutrition limit and PAH sequestration. The microbial activities developed in humic acid (HA) were much higher than those developed in humin, which was demonstrated to be able to sequester organic pollutants stronger. The results suggested that the nutrition support and sequestration were the two major mechanisms, that soil organic matter influenced the development of microbial PAHs degradation potentials. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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