期刊
BIORESOURCE TECHNOLOGY
卷 353, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2022.127148
关键词
Heterotrophic nitrification; Aerobic denitrification; Low temperature; Nitrogen removal pathway
资金
- National Natural Science Foundation of China (NSFC) [42067037, 41701281, 51869014]
- Science and Technology Major Project on Lakes of Inner Mongolia [ZDZX2018054]
A newly identified bacterial strain, Acinetobacter calcoaceticus TY1, efficiently metabolized nitrogen from ammonium at low temperatures, indicating its potential for wastewater management.
A new bacterial strain, Acinetobacter calcoaceticus TY1, was identified in activated sludge. This strain efficiently metabolized nitrogen from ammonium at low temperatures, utilizing NH4+-N, NO3--N, and NO2--N as nitrogen sources. Of these, NH4+-N was superior in terms of both assimilation and heterotrophic nitrification at 8 degrees C. The nitrogen metabolism-associated genes amoA, nirK, and nosZ were identified in TY1. Optimal requirements for growth and nitrogen removal were pH 7, shaking speed of 90 rpm, a C/N ratio of 10, and sodium citrate for the carbon supply. The ability to denitrify at low temperature suggests TY1 ' s potential for wastewater management.
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