Nitrogen removal characteristics of a heterotrophic nitrifier Acinetobacter junii YB and its potential application for the treatment of high-strength nitrogenous wastewater》.pdfVIP

Bioresource Technology 193 (2015) 227–233 Contents lists available at ScienceDirect Bioresource Technology journal homepage: www.elsevi /locate/biortech Nitrogen removal characteristics of a heterotrophic nitrifier Acinetobacter junii YB and its potential application for the treatment of high-strength nitrogenous wastewater Lei Yang a,b, Yong-Xiang Ren a,b,⇑, Xian Liang a,b, Si-Qi Zhao a,b, Jun-ping Wang a,b, Zhi-Hong Xia c a Shaanxi Key Laboratory of Environmental Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China b Key Lab of Northwest Water Resource, Environment and Ecology, Ministry of Education, Xi’an University of Architecture and Technology, Xi’an 710055, China c Shaanxi Architectural Design Research Institute Co., Ltd., Xi’an 710003, China h i g h l i g h t s Strain YB possessed heterotrophic nitrification–aerobic denitrification ability. Ammonium was found to be removed preferentially in mixed N-sources. hao, napA and nirS genes were successfully expressed through PCR amplification. High potential application of YB for the treatment of nitrogenous wastewater. a r t i c l e i n f o a b s t r a c t Article history: Acinetobacter junii YB was found to exhibit efficient heterotrophic nitrification and aerobic denitrification Received 28 March 2015 ability, with the maximum ammonium, nitrite and nitrate removal rate of 8.82, 8.45 and 7.98 mg/L/h, Received in revised form 20 May 2015 respectively. Meanwhile, ammonium was found to be removed preferentially in the process of simulta- Accepted 21 May 2015