Microbial community distribution and activity dynamics of granular biomass in a CANON reactor

Water Research
Jose Vázquez-PadínNiels Peter Revsbech

Abstract

The application of microelectrodes to measure oxygen and nitrite concentrations inside granules operated at 20 degrees C in a CANON (Complete Autotrophic Nitrogen-removal Over Nitrite) reactor and the application of the FISH (Fluorescent In Situ Hybridization) technique to cryosectioned slices of these granules showed the presence of two differentiated zones inside of them: an external nitrification zone and an internal anammox zone. The FISH analysis of these layers allowed the identification of Nitrosomonas spp. and Candidatus Kuenenia Stutgartiensis as the main populations carrying out aerobic and anaerobic ammonia oxidation, respectively. Concentration microprofiles measured at different oxygen concentrations in the bulk liquid (from 1.5 to 35.2 mg O(2) L(-1)) revealed that oxygen was consumed in a surface layer of 100-350 microm width. The obtained consumption rate of the most active layers was of 80 g O(2) (L(granule))(-1) d(-1). Anammox activity was registered between 400 and 1000 microm depth inside the granules. The nitrogen removal capacity of the studied sequencing batch reactor containing the granular biomass was of 0.5 g N L(-1) d(-1). This value is similar to the mean nitrogen removal rate obtained from calculatio...Continue Reading

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Citations

Feb 1, 2014·International Journal of Molecular Sciences·Robert AlmstrandMalte Hermansson
Sep 26, 2012·Applied Microbiology and Biotechnology·Ying-Cui YuYu Tao
Feb 10, 2016·Amino Acids·Alejandro González-MartínezJesús González-López
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Feb 2, 2018·BioMed Research International·Xiaoling ZhangZhengqun Li
Aug 8, 2015·Water Science and Technology : a Journal of the International Association on Water Pollution Research·N MoralesA Mosquera-Corral
Apr 11, 2018·Critical Reviews in Biotechnology·Saurabh Jyoti Sarma, Joo-Hwa Tay
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Feb 14, 2018·FEMS Microbiology Letters·Alejandro Gonzalez-MartinezJesus Gonzalez-Lopez
Mar 30, 2018·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Yue-Mei HanZhi-Jun Liu
Dec 14, 2017·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Weixing MiRixiang Zhao
Feb 26, 2020·Applied Microbiology and Biotechnology·Lan Li WongThomas Seviour
Oct 5, 2020·Water Research·Weigang WangYayi Wang
Jun 14, 2021·Environmental Science and Pollution Research International·Yangfan XuJianwei Zhao
Aug 24, 2021·The Science of the Total Environment·Jia MengMin Zheng

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