Sustainable biodegradation of phenol by immobilized Bacillus sp. SAS19 with porous carbonaceous gels as carriers. (15th September 2018)

• Record Type: Journal Article
• Authors: Ke, Qian; Zhang, Yunge; Wu, Xilin; Su, Xiaomei; Wang, Yuyang; Lin, Hongjun; Mei, Rongwu; Zhang, Yu; Hashmi, Muhammad Zaffar; Chen, Chongjun; Chen, Jianrong
• Is Part Of: Journal of environmental management. Volume 222(2018)
• Page Start: 185
• Page End: 189
• Publication Date: 2018-09-15
• Subjects: Resuscitation-promoting factor -- Bacillus sp. SAS19 -- Phenol biodegradation -- Carbonaceous gels -- Immobilized bacteria; Environmental policy -- Periodicals; Environmental management -- Periodicals; Environment -- Periodicals; Ecology -- Periodicals; 363.705
• DOI: 10.1016/j.jenvman.2018.05.061
• Languages: English
• ISSNs: 0301-4797

Abstract

Abstract: 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. Graphical abstract: Image 1 Highlights: High-efficient phenol-degrading strain SAS19 was isolated by Rpf addition. Bacillus sp. SAS19 can completely degrade 1800 mg/L phenol within 78 h. Phenol-degrading Bacillus sp. SAS19 was immobilized on carbonaceous gels. Reuse of immobilized bacteria up to three times has been demonstrated. Immobilized bacteria can remove 1600 mg/L phenol in 24 h at the 3rd reuse cycle.