Biodegradation of bisphenol A with diverse microorganisms from river sediment
Journal
Journal of Hazardous Materials
Journal Volume
286
Journal Volume
286
Pages
285-290
Start Page
285
End Page
290
ISSN
03043894
Date Issued
2015-04-09
Author(s)
Abstract
The wide distribution of bisphenol A (BPA) in the environment is problematic because of its endocrine-disrupting characteristics and toxicity. Developing cost-effective remediation methods for wide implementation is crucial. Therefore, this study investigated the BPA biodegradation ability of various microorganisms from river sediment. An acclimated microcosm completely degraded 10mgL-1 BPA within 28h and transformed the contaminant into several metabolic intermediates. During the degradation process, the microbial compositions fluctuated and the final, predominant microorganisms were Pseudomonas knackmussii and Methylomonas clara. From the original river sediment, we isolated four distinct strains, which deplete the BPA over 7-9 days. They were all genetically similar to P. knackmussii. The degradation ability of mixed strains was higher than that of single strain but was far less than that of the microbial consortium. The novel BPA degradation ability of P. knackmussii and its role in the decomposing microcosm were first demonstrated. Our results revealed that microbial diversity plays a crucial role in pollutant decomposition.
Subjects
Biodegradation
Biodiversity
Bisphenol A
Intermediates
Pseudomonas knackmussii
Publisher
Elsevier
Type
journal article