caa a22 4500 605498210 CHVBK 20210128100545.0 cr unu---uuuuu 210128e20150801xx s 000 0 eng 10.1007/s00253-015-6631-0 doi (NATIONALLICENCE)springer-10.1007/s00253-015-6631-0 Using electric field to enhance the activity of anammox bacteria [Elektronische Daten] [Xin Yin, Sen Qiao, Jiti Zhou] Electric field was applied to enhance the activity of anaerobic ammonium oxidation (anammox) bacteria for nitrogen removal in this study. The effect of different distributive modes with the total electric field time of 6h/24h (R2) and 18h/24h (R3) at 2V/cm was determined through long-term tests. With the continuous application time increasing from 3 to 9h in R3 (1 to 3h in R2), the total nitrogen removal rate (NRR) showed an acceleration trend. When the electric field was applied continuously for 9h (R3, mode 3, application-rest time: 9h-3h), the NRR dramatically increased 38.7% over that of control on day 160. Besides, it was demonstrated that the increase of crude enzyme activities and the cell quantities were the main reasons for the enhancement of nitrogen removal performance of the anammox process. Additionally, transmission electron microscope observation proved the morphological change of anammox biomass under electric field application. Springer-Verlag Berlin Heidelberg, 2015 Anammox nationallicence External electric field nationallicence Application time nationallicence Crude enzyme activity nationallicence Morphological change nationallicence Yin Xin Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, China), School of Environmental Science and Technology, Dalian University of Technology, 116024, Dalian, People's Republic of China aut Qiao Sen Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, China), School of Environmental Science and Technology, Dalian University of Technology, 116024, Dalian, People's Republic of China aut Zhou Jiti Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, China), School of Environmental Science and Technology, Dalian University of Technology, 116024, Dalian, People's Republic of China aut Applied Microbiology and Biotechnology Springer Berlin Heidelberg 99/16(2015-08-01), 6921-6930 0175-7598 99:16<6921 2015 99 253 https://doi.org/10.1007/s00253-015-6631-0 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00253-015-6631-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Yin Xin Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, China), School of Environmental Science and Technology, Dalian University of Technology, 116024, Dalian, People's Republic of China aut NATIONALLICENCE 700 1- Qiao Sen Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, China), School of Environmental Science and Technology, Dalian University of Technology, 116024, Dalian, People's Republic of China aut NATIONALLICENCE 700 1- Zhou Jiti Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, China), School of Environmental Science and Technology, Dalian University of Technology, 116024, Dalian, People's Republic of China aut NATIONALLICENCE 773 0- Applied Microbiology and Biotechnology Springer Berlin Heidelberg 99/16(2015-08-01), 6921-6930 0175-7598 99:16<6921 2015 99 253