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Pretreatment of spiramycin fermentation residue using hyperthermophilic digestion: quick startup and performance
Awad, Mohammed; Tian, Zhe; Gao, Yingxin; Yang, Min; Zhang, Yu
2018-01-12
Source PublicationWATER SCIENCE AND TECHNOLOGY
ISSN0273-1223
Volume78Issue:9Pages:1823-1832
SubtypeArticle
AbstractThis study aimed to evaluate the feasibility of hyperthermophilic anaerobic digestion at 70 degrees C in the pretreatment of spiramycin fermentation residue. By feeding municipal excess sludge under a solid retention time of 5 days, the hyperthermophilic digester was successfully started up within 3 days from mesophilic digestion by a one-step temperature increase from 35 to 70 degrees C. MiSeq sequencing showed the fast establishment of thermophilic fermenting bacterial communities in 3 days immediately after the temperature increase, with increases in abundance of Coprothermobacter, Spirochaetaceae uncultured and Fervidobacterium from <0.001%, 1.06% and <0.001% to 33.77%, 11.65% and 3.42%, respectively. The feasibility of hyperthermophilic digestion for spiramycin residue was evaluated in batch experiments for 7 days. Hyperthermophilic digestion considerably reduced antibiotic concentrations, with removal efficiencies of 55.3% and 99.0% for the spiramycin residue alone and its mixture with hyperthermophilic sludge, respectively. At the same time, the abundances of four macrolide-lincosamide-streptogramin resistance genes were also reduced within 7 days, due to the decrease of their corresponding hosts. These results suggest that hyperthermophilic digestion could easily be started up from mesophilic digestion and might be a suitable pretreatment approach for spiramycin residue.
Department环境水质学国家重点实验室
Keywordantibiotic resistance genes hyperthermophilic digestion mesophilic anaerobic digestion spiramycin fermentation residue startup
Document Type期刊论文
Identifierhttp://ir.rcees.ac.cn/handle/311016/41170
Collection环境水质学国家重点实验室
Recommended Citation
GB/T 7714
Awad, Mohammed,Tian, Zhe,Gao, Yingxin,et al. Pretreatment of spiramycin fermentation residue using hyperthermophilic digestion: quick startup and performance[J]. WATER SCIENCE AND TECHNOLOGY,2018,78(9):1823-1832.
APA Awad, Mohammed,Tian, Zhe,Gao, Yingxin,Yang, Min,&Zhang, Yu.(2018).Pretreatment of spiramycin fermentation residue using hyperthermophilic digestion: quick startup and performance.WATER SCIENCE AND TECHNOLOGY,78(9),1823-1832.
MLA Awad, Mohammed,et al."Pretreatment of spiramycin fermentation residue using hyperthermophilic digestion: quick startup and performance".WATER SCIENCE AND TECHNOLOGY 78.9(2018):1823-1832.
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