Immobilization of fungal laccase onto a nonionic surfactant-modified clay material: application to PAH degradation
| Autor: | Vivian Yang, Yi-Fen Liao, Keng-Hua Liu, Jiunn-Fwu Lee, Yi-Tang Chang |
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| Rok vydání: | 2015 |
| Předmět: |
inorganic chemicals
Health Toxicology and Mutagenesis Polysorbates 02 engineering and technology 010501 environmental sciences complex mixtures 01 natural sciences Micelle Polyethylene Glycols Surface-Active Agents chemistry.chemical_compound Adsorption Bioremediation Pulmonary surfactant Soil Pollutants Environmental Chemistry Organic chemistry Polycyclic Aromatic Hydrocarbons Micelles 0105 earth and related environmental sciences Naphthalene Laccase Chemistry General Medicine Phenanthrene Enzymes Immobilized 021001 nanoscience & nanotechnology Pollution Biodegradation Environmental Solubility Chemical engineering Clay Degradation (geology) Aluminum Silicates 0210 nano-technology Hydrophobic and Hydrophilic Interactions |
| Zdroj: | Environmental Science and Pollution Research. 23:4024-4035 |
| ISSN: | 1614-7499 0944-1344 |
| DOI: | 10.1007/s11356-015-4248-6 |
| Popis: | Nonionic surfactant-modified clay is a useful absorbent material that effectively removes hydrophobic organic compounds from soil/groundwater. We developed a novel material by applying an immobilized fungal laccase onto nonionic surfactant-modified clay. Low-water-solubility polycyclic aromatic hydrocarbons (PAHs) (naphthalene/phenanthrene) were degraded in the presence of this bioactive material. PAH degradation by free laccase was higher than degradation by immobilized laccase when the surfactant concentration was allowed to form micelles. PAH degradation by immobilized laccase on TX-100-modified clay was higher than on Brij35-modified clay. Strong laccase degradation of PAH can be maintained by adding surfactant monomers or micelles. The physical adsorption of nonionic surfactants onto clay plays an important role in PAH degradation by laccase, which can be explained by the structure and molecular interactions of the surfactant with the clay and enzyme. A system where laccase is immobilized onto TX-100-monomer-modified clay is a good candidate bioactive material for in situ PAHs bioremediation. |
| Databáze: | OpenAIRE |
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