Abstract：
:The effects of volatile fatty acids (VFAs) on nitrogen removal and microbial community structure in nitritation/anammox process were compared within a granular sludge reactor and a moving bed biofilm reactor. Nitrate productions in both systems were lower by 40-68% in comparison with expected nitrate production. Expected sludge production on VFAs was estimated to be 67-77% higher if heterotrophs were the main acetate degraders suggesting that Anammox bacteria used its organotrophic capability and successfully competed with general heterotrophs for organic carbon, which led to a reduced sludge production. FISH measurements showed a population consisting of mainly Anammox and AOB in both reactors and oxygen uptake rate (OUR) tests also confirmed that flocculent biomass consisted of a minor proportion of heterotrophs with a large proportion of AOBs. The dominant Anammox bacterium was Candidatus "Brocadia fulgida" with a minor fraction of Candidatus "Anammoxoglobus propionicus", both known to be capable of oxidizing VFAs.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Winkler MK,Yang J,Kleerebezem R,Plaza E,Trela J,Hultman B,van Loosdrecht MCdoi
10.1016/j.biortech.2012.03.070subject
Has Abstractpub_date
2012-06-01 00:00:00pages
217-23eissn
0960-8524issn
1873-2976pii
S0960-8524(12)00534-2journal_volume
114pub_type
杂志文章abstract：:A continuous fixed bed study was carried out by using rice husk as a biosorbent for the removal of congo red (CR) from aqueous solution. The effects of important factors, such as the value of initial pH, existing salt, the flow rate, the influent concentration of CR and bed depth, were studied. Data confirmed that the...
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journal_title：Bioresource technology
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