Journal
JOURNAL OF ENVIRONMENTAL MANAGEMENT
Volume 222, Issue -, Pages 185-189Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jenvman.2018.05.061
Keywords
Resuscitation-promoting factor; Bacillus sp SAS19; Phenol biodegradation; Carbonaceous gels; Immobilized bacteria
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Funding
- National Natural Science Foundation of China [41701354, 51508366]
- Natural Science Foundation of Zhejiang Province of China [LQ17D010002]
- Special Funds for the Zhejiang Research Academy of Environmental Science [2017F30030, 2016F50G5220011]
- Research Fund for the Doctoral Research of Key University [ZZ323205020516001108]
- Open Project of Zhejiang Province Key Laboratory of Environmental Pollution Control Technology
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In this study, high-efficient phenol-degrading bacterium Bacillus sp. SAS19 which was isolated from activated sludge by resuscitation-promoting factor (Rpf) addition, were immobilized on porous carbonaceous gels (CGs) for phenol degradation. The phenol-degrading capabilities of free and immobilized Bacillus sp. SAS19 were evaluated under various initial phenol concentrations. The obtained results showed that phenol could be removed effectively by both free and immobilized Bacillus sp. SAS19. Furthermore, for degradation of phenol at high concentrations, long-term utilization and recycling were more readily achieved for immobilized bacteria as compared to free bacteria. Immobilized bacteria exhibited significant increase in phenol-degrading capabilities in the third cycle of recycling and reuse, which demonstrated 87.2% and 100% of phenol (1600 mg/L) degradation efficiency at 12 and 24 h, respectively, The present study revealed that immobilized Bacillus sp. SAS19 can be potentially used for enhanced treatment of synthetic phenol-laden wastewater.
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