Isolation of a highly efficient phenol-degrading fungus and the preparation of an effective microbial inoculum for activated sludge and its enhancement for hydrogen production. (14th June 2019)

• Record Type: Journal Article
• Authors: Wang, Xueqing; Wang, Ye; Zhang, Anlong; Duo, Chen; Zhao, Chengxin; Xie, Fei
• Is Part Of: International journal of hydrogen energy. Volume 44:Number 30(2019)
• Page Start: 16004
• Page End: 16014
• Publication Date: 2019-06-14
• Subjects: Phenol degradation -- Fungi -- Microbial inoculum -- Activated sludge -- Hydrogen production; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2018.10.154
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: A phenol-degrading fungal strain Magnusiomyces capitatus QWD1 was isolated from activated sludge that was used to treat papermaking wastewater. Through parameters optimization, the optimal degradation conditions were found to encompass (NH4 )2 SO4 as nitrogen source (14 mmol/L), inoculum concentration of 15%, pH 7 and a temperature of 35 °C. Four different materials were used as carriers for the preparation of the microbial inoculum and the effect of storage temperatures on inoculum viability was investigated. With the prepared bioaugmentation inoculum addition to activated sludge, it was found to markedly increase the original system's treatment efficiency of phenol-containing wastewater. A high-throughput sequencing-based analyze approach revealed that the phenol-degrading inoculum addition can increase the abundance and diversity of fungi in the treatment system, which supports the development of a stable microbial ecosystem. The H2 production of photosynthetic bacteria with the bioaugmented QWD1 inoculum was 32.4% higher than the control without inoculum addition when using the phenol-containing wastewater. Highlights: A phenol-degrading fungi was isolated from the sludge of papermaking wastewater. The bioaugmentation enhanced the COD removal efficiency of phenolic wastewater. The fungi addition could increase the hydrogen production yield for R. sphaeroides.