Abstract：
:Effects of pH on gas-phase biofilter performance including NH3 removal efficiency (RE), N2O generation, and microbial communities of ammonia oxidizers and denitrifies, are examined. A two-step experiment was carried out on four biofilters for 130 days. In step 1 with pH 8.0, NH3 REs were 85-95% and N2O concentrations were 0.1-0.4 ppm. In step 2, pH was adjusted to 4.5, 6.0, 8.0, and 9.5 in four biofilters, respectively. The acidified biofilters showed higher NH3 REs than the alkalized biofilters. N2O concentration in biofilters with pH 4.5 and 6.0 was increased to 1.5 and 0.5 ppm, respectively, while no change in the alkalized biofilters. Comparing to communities in step 1, the amoA and nosZ structures were altered when pH was changed to 4.5 and 6.0, but not at 9.5. Abundance of amoA was reduced at pH 4.5, while nosZ abundance was increased with considerably less changes in acidified biofilters compared to alkalized biofilters.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Yang L,Wang X,Funk TLdoi
10.1016/j.biortech.2013.10.116subject
Has Abstractpub_date
2014-01-01 00:00:00pages
74-9eissn
0960-8524issn
1873-2976pii
S0960-8524(13)01703-3journal_volume
152pub_type
杂志文章abstract：:Micro-algae have potential as sustainable sources of energy and products and alternative mode of agriculture. However, their mass cultivation is challenging due to low survival under harsh outdoor conditions and competition from other, undesired, species. Extremophilic micro-algae have a role to play by virtue of thei...
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