PMID- 27450126 OWN - NLM STAT- MEDLINE DCOM- 20170119 LR - 20181202 IS - 1873-2976 (Electronic) IS - 0960-8524 (Linking) VI - 218 DP - 2016 Oct TI - Effects of dissolved oxygen on microbial community of single-stage autotrophic nitrogen removal system treating simulating mature landfill leachate. PG - 962-8 LID - S0960-8524(16)30987-7 [pii] LID - 10.1016/j.biortech.2016.07.023 [doi] AB - The performance of four identical sequencing biofilm batch reactors (SBBR) for autotrophic nitrogen removal was investigated with 2000mg/L ammonia-containing mature landfill leachate at 30 degrees C. The main objective of this study was to evaluate the effects of dissolved oxygen (DO) on the performance and microbial community of single-stage nitrogen removal using anammox and partial nitritation (SNAP) system. At an applied load of 0.5kgNm(-3)d(-1), average total nitrogen removal efficiency (TNRE) above 90% was long-term achieved with an optimal DO concentration of 2.7mg/L. The microelectrode-measured profiles showed the microenvironments inside the biofilms. 16S ribosomal Ribonucleic Acid (rRNA) amplicon pyrosequencing and denaturing gradient gel electrophoresis (DGGE) were used to analyze the microbial variations of different DO concentrations and different positions inside one reactor. CI - Copyright (c) 2016 Elsevier Ltd. All rights reserved. FAU - Wen, Xin AU - Wen X AD - Faculty of Urban Construction and Environmental Engineering, Chongqing University, Chongqing 400045, PR China. FAU - Zhou, Jian AU - Zhou J AD - Faculty of Urban Construction and Environmental Engineering, Chongqing University, Chongqing 400045, PR China; Key Laboratory of the Three Gorges Reservoir's Eco-Environments, Ministry of Education, Chongqing University, Chongqing 400045, PR China. FAU - Wang, Jiale AU - Wang J AD - Faculty of Urban Construction and Environmental Engineering, Chongqing University, Chongqing 400045, PR China. FAU - Qing, Xiaoxia AU - Qing X AD - Faculty of Urban Construction and Environmental Engineering, Chongqing University, Chongqing 400045, PR China; Key Laboratory of the Three Gorges Reservoir's Eco-Environments, Ministry of Education, Chongqing University, Chongqing 400045, PR China. FAU - He, Qiang AU - He Q AD - Faculty of Urban Construction and Environmental Engineering, Chongqing University, Chongqing 400045, PR China; Key Laboratory of the Three Gorges Reservoir's Eco-Environments, Ministry of Education, Chongqing University, Chongqing 400045, PR China. Electronic address: cquqianghe@163.com. LA - eng PT - Journal Article DEP - 20160708 PL - England TA - Bioresour Technol JT - Bioresource technology JID - 9889523 RN - 0 (Water Pollutants, Chemical) SB - IM MH - Autotrophic Processes MH - *Biofilms/growth & development MH - Bioreactors/*microbiology MH - Denaturing Gradient Gel Electrophoresis MH - Denitrification MH - Water Pollutants, Chemical/*chemistry MH - Water Purification/*methods OTO - NOTNLM OT - Autotrophic nitrogen removal OT - Bacterial community OT - Dissolved oxygen OT - Microenvironment EDAT- 2016/07/28 06:00 MHDA- 2017/01/20 06:00 CRDT- 2016/07/25 06:00 PHST- 2016/04/26 00:00 [received] PHST- 2016/07/05 00:00 [revised] PHST- 2016/07/06 00:00 [accepted] PHST- 2016/07/25 06:00 [entrez] PHST- 2016/07/28 06:00 [pubmed] PHST- 2017/01/20 06:00 [medline] AID - S0960-8524(16)30987-7 [pii] AID - 10.1016/j.biortech.2016.07.023 [doi] PST - ppublish SO - Bioresour Technol. 2016 Oct;218:962-8. doi: 10.1016/j.biortech.2016.07.023. Epub 2016 Jul 8.