首页 | 本学科首页   官方微博 | 高级检索  
     


Aerobic nonylphenol degradation and nitro-nonylphenol formation by microbial cultures from sediments
Authors:Jasperien De Weert  Marc Viñas  Tim Grotenhuis  Huub Rijnaarts  Alette Langenhoff
Affiliation:1. Deltares, Princetonlaan 6, 3584 CB, Utrecht, The Netherlands
2. Section of Environmental Technology, Wageningen University, Bomenweg 2, 6703 HD, Wageningen, The Netherlands
3. GIRO Technological Center, Rambla Pompeu Fabra 1. E-08100 Mollet del Vallès, Barcelona, Spain
Abstract:Nonylphenol (NP) is an estrogenic pollutant which is widely present in the aquatic environment. Biodegradation of NP can reduce the toxicological risk. In this study, aerobic biodegradation of NP in river sediment was investigated. The sediment used for the microcosm experiments was aged polluted with NP. The biodegradation of NP in the sediment occurred within 8 days with a lag phase of 2 days at 30°C. During the biodegradation, nitro-nonylphenol metabolites were formed, which were further degraded to unknown compounds. The attached nitro-group originated from the ammonium in the medium. Five subsequent transfers were performed from original sediment and yielded a final stable population. In this NP-degrading culture, the microorganisms possibly involved in the biotransformation of NP to nitro-nonylphenol were related to ammonium-oxidizing bacteria. Besides the degradation of NP via nitro-nonylphenol, bacteria related to phenol-degrading species, which degrade phenol via ring cleavage, are abundantly present.
Keywords:
本文献已被 SpringerLink 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号