| Biodegradation of 2-naphthol and its metabolites by coupling Aspergillus niger with Bacillus subtilis | |
| Alternative Title | Biodegradation of 2-naphthol and its metabolites by coupling Aspergillus niger with Bacillus subtilis |
| Zang Shuyan1; Lian Bin1; Wang Juan2; Yang Yanjie2 | |
| 2010 | |
| Source Publication | JOURNAL OF ENVIRONMENTAL SCIENCES
 |
| ISSN | 1001-0742 |
| Volume | 22Issue:5Pages:669-674 |
| Abstract | To explore biodegradation of 2-naphthol and its metabolites accumulated in wastewater treatment, a series of bio-degradation experiments were conducted. Two main metabolites of 2-naphthol, 1,2-naphthalene-diol and 1,2-naphthoquinone, were identified by high-performance liquid chromatography with standards. Combining fungus Aspergillus niger with bacterium Bacillus subtilis in the treatment enhanced 2-naphthol degradation efficiency, lowered the accumulation of the two toxic metabolites. There were two main phases during the degradation process by the kinetic analysis: 2-naphthol was first partly degraded by the fungus, producing labile and easily accumulated metabolites, and then the metabolites were mainly degraded by the bacterium, attested by the degradation processes of 1,2-naphthalene-diol and 1,2-naphthoquinone as sole source of carbon and energy. Sodium succinate, as a co-metabolic substrate, was the most suitable compound for the continuous degradation. The optimum concentration of 2-naphthol was 50 mg/L. The overall 2-naphthol degradation rate was 92%, and the CODCr removal rate was 80% on day 10. These results indicated that high degradation rate of 2-naphthol should not be considered as the sole desirable criterion for the bioremediation of 2-naphthol-contaminated soils/wastewater. |
| Other Abstract | To explore biodegradation of 2-naphthol and its metabolites accumulated in wastewater treatment, a series of bio-degradation experiments were conducted. Two main metabolites of 2-naphthol, 1,2-naphthalene-diol and 1,2-naphthoquinone, were identified by high-performance liquid chromatography with standards. Combining fungus Aspergillus niger with bacterium Bacillus subtilis in the treatment enhanced 2-naphthol degradation efficiency, lowered the accumulation of the two toxic metabolites. There were two main phases during the degradation process by the kinetic analysis: 2-naphthol was first partly degraded by the fungus, producing labile and easily accumulated metabolites, and then the metabolites were mainly degraded by the bacterium, attested by the degradation processes of 1,2-naphthalene-diol and 1,2-naphthoquinone as sole source of carbon and energy. Sodium succinate, as a co-metabolic substrate, was the most suitable compound for the continuous degradation. The optimum concentration of 2-naphthol was 50 mg/L. The overall 2-naphthol degradation rate was 92%, and the COD_(Cr) removal rate was 80% on the 10th day. These results indicated that high degradation rate of 2-naphthol should not be considered as the sole desirable criterion for the bioremediation of 2-naphthol-contaminated soils/wastewater because some of its accumulated metabolites still have severe health risks to human. |
| Keyword | POLYCYCLIC AROMATIC-HYDROCARBONS DEGRADATION PHENANTHRENE SOIL REMOVAL PHASE WATER TIO2 2-naphthol metabolites identify continuous degradation accumulation |
| Indexed By | CSCD |
| Language | 英语 |
| Funding Project | [National Science Fundation for Innovative Research Group] ; [National Natural Science Foundation of China] ; [China Postdoctoral Science Foundation] ; [Guizhou Provincial Foundation for Science and Teaching Talents Program] |
| CSCD ID | CSCD:3902637 |
| Citation statistics |
Cited Times:2[CSCD]
[CSCD Record]
|
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/154597 |
| Collection | 中国科学院金属研究所 |
| Affiliation | 1.中国科学院 2.中国科学院金属研究所 |
| Recommended Citation GB/T 7714 | Zang Shuyan,Lian Bin,Wang Juan,et al. Biodegradation of 2-naphthol and its metabolites by coupling Aspergillus niger with Bacillus subtilis[J]. JOURNAL OF ENVIRONMENTAL SCIENCES,2010,22(5):669-674. |
| APA | Zang Shuyan,Lian Bin,Wang Juan,&Yang Yanjie.(2010).Biodegradation of 2-naphthol and its metabolites by coupling Aspergillus niger with Bacillus subtilis.JOURNAL OF ENVIRONMENTAL SCIENCES,22(5),669-674. |
| MLA | Zang Shuyan,et al."Biodegradation of 2-naphthol and its metabolites by coupling Aspergillus niger with Bacillus subtilis".JOURNAL OF ENVIRONMENTAL SCIENCES 22.5(2010):669-674. |
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