Pentachlorophenol degradation by Pseudomonas stutzeri CL7 in the
secondary sludge of pulp and paper mill |
| |
Authors: | Santosh Kr Karn S K Chakrabarty and M S Reddy |
| |
Institution: | 1. Department of Biotechnology,Thapar University,Patiala 147004,India 2. Thapar Centre for Industrial Research and Development,Yamunanagar 135001,India |
| |
Abstract: | A pentachlorophenol (PCP) mineralizing bacterium was isolated from the secondary sludge of pulp and paper mill and identified
as Pseudomonas stutzeri strain CL7. This isolate used PCP as its sole source of carbon and energy and was capable of degrading this
compound as indicated by stoichiometric release of chloride and biomass formation. P. stutzeri (CL7) was able to mineralize a high
concentration of PCP (600 mg/L) than any previously reported Pseudomonad with PCP as sole carbon source. As the concentration
of PCP increased from 50 to 600 mg/L, the reduction in the cell growth was observed and the PCP degradation was more than 90%
in all studied concentrations. This isolate was able to remove 66.8% of PCP from the secondary sludge of pulp and paper mill when
supplemented with 100 mg/L of PCP and grown for two weeks. This study showed that the removal e ciency of PCP by CL7 was
found to be very e ective and can be used in PCP remediation of pulp paper mill waste in the environment. |
| |
Keywords: | pentachlorophenol 16S rRNA secondary sludge bioremediation pulp and paper mill |
本文献已被 CNKI 万方数据 ScienceDirect PubMed 等数据库收录! |
| 点击此处可从《环境科学学报(英文版)》浏览原始摘要信息 |
| 点击此处可从《环境科学学报(英文版)》下载免费的PDF全文 |