Study on the Mechanism of ANAMMOX in Multi - channel Electron Transfer System View Homepage


Ontology type: schema:MonetaryGrant     


Grant Info

YEARS

2012-2015

FUNDING AMOUNT

580000 CNY

ABSTRACT

Compared to traditional biological denitrification technology, anaerobic ammonium oxidation (ANAMMOX) process can save 90% of the operating costs and 50% of the space. However, ANAMMOX bacteria grow slowly, the start-up period is longer and unstable. The advantage of strengthening ANAMMOX bacteria in the system is the key to improving the effectiveness of the process. From the perspective of thermodynamics and genomics, ANAMMOX has a theoretical basis for the small metabolic pathways of small molecular organic matter, ferromanganese ion, NO and N2O as potential electron donors or receptors. In this study, high purity (99.5%) ANAMMOX strain was obtained by AMBR reactor enrichment and Percoll gradient density centrifugation with the existing ANAMMOX bacterial mixture. Then, stable isotope tracer technique and real-time quantitative PCR To investigate the feasibility, efficiency and metabolic pathway of ANAMMOX in different electron transport systems, to investigate the effect of potential electron donors and receptors on the growth of ANAMMOX bacteria and to explore the optimization of CANON-O Conditions, and ultimately to develop a more efficient, stable and low cost ANAMMOX nitrogen removal process to provide scientific and technical support. More... »

URL

http://npd.nsfc.gov.cn/projectDetail.action?pid=21177033

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