Newly isolated Enterobacter cloacae sp. HN01 and Klebsiella pneumoniae sp. HN02 collaborate with self-secreted biosurfactant to improve solubility and bioavailability for the biodegradation of hydrophobic and toxic gaseous para-xylene
| Autor: | Yan Wang, Shungang Wan, Weili Yu, Dan Yuan, Lei Sun |
|---|---|
| Rok vydání: | 2022 |
| Předmět: |
Volatile Organic Compounds
Environmental Engineering Sewage Health Toxicology and Mutagenesis Public Health Environmental and Occupational Health Biological Availability General Medicine General Chemistry Xylenes Pollution Agar Klebsiella pneumoniae Surface-Active Agents Biodegradation Environmental Solubility Enterobacter cloacae Environmental Chemistry Gases |
| Zdroj: | Chemosphere. 304 |
| ISSN: | 1879-1298 |
| Popis: | The gas-liquid mass transfer rate of hydrophobic volatile organic compounds (VOCs) is the limiting step in a biological treatment system. The present study aimed to utilize self-producing biosurfactants to enhance the bioavailability of hydrophobic gaseous VOCs. Two novel gram-negative rod-shaped bacteria, Enterobacter cloacae strain HN01 and Klebsiella pneumoniae strain HN02 were successfully isolated from sewage sludge by using blood agar and methylene blue agar plates. The two strains can use para-xylene (PX), a hydrophobic VOC model, as the only carbon source for biosurfactant production. Both strains can produce glycolipid biosurfactants, as confirmed by the emulsification index, Nuclear magnetic resonance, and Fourier transform infrared spectroscopy. Results indicated that PX can be completely decomposed at an initial concentration of 15.50 mg L |
| Databáze: | OpenAIRE |
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