Long term effects of salt on activity, population structure and floc characteristics in enriched bacterial cultures of nitrifiers

Water Research
M S MoussaM C M van Loosdrecht

Abstract

The effect of salinity on the activity, the composition of nitrifiers and floc characteristics of nitrifying sludge was studied. Non-adapted and adapted (to 10g NaCl-Cl(-)/L for one year) enriched cultures of nitrifiers were tested in three sequencing batch reactors. Salt was increased gradually with 5 up to 40 g Cl(-)/L. No difference in steady state activity was observed between the adapted and non-adapted sludge. The activities of ammonia and nitrite oxidizers dropped 36% and 11%, respectively, at salt concentrations of 10 g Cl(-)/L. At 40 g Cl(-)/L inhibition reached 95% of salt free activity for ammonia and nitrite oxidizers in both adapted and non-adapted reactors. Nitrosomonas europaea and Nitrobacter sp. (fluorescent in situ hybridization) were the only nitrifiers present at high salt levels. Increased salt concentrations resulted in better settling characteristics of the nitrifying sludge. After 118 days the sludge was brought back to the initial conditions (0 g Cl(-)/L for non-adapted and 10 g Cl(-)/L for adapted). Despite the change in population composition similar kinetics as before the salt stress were observed.

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Citations

Mar 21, 2015·The Science of the Total Environment·Nguyen Cong NguyenPo-Hsun Lin
Jan 28, 2014·Applied Microbiology and Biotechnology·T P H van den BrandM C M van Loosdrecht
Feb 15, 2014·Applied Microbiology and Biotechnology·Emilie N P CourtensSiegfried E Vlaeminck
Nov 17, 2009·Applied Microbiology and Biotechnology·Utomo SudarnoClaudia Gallert
Apr 9, 2011·Environmental Science and Pollution Research International·Daniela P MesquitaMaria Alice Z Coelho
Nov 15, 2013·Journal of Bioscience and Bioengineering·Mu LiuHan Xiao
Apr 17, 2012·Bioresource Technology·Wei Jie YapYu Liu
Dec 15, 2015·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Miri MatsubayashiShigeki Uemura
Oct 12, 2010·Journal of Hazardous Materials·João P BassinGeraldo L Sant'anna
May 9, 2016·Journal of Environmental Sciences (China)·Baodan JinYongzhen Peng
Sep 1, 2009·Journal of Bioscience and Bioengineering·Takehiko ShinoharaKenji Furukawa
Apr 28, 2009·Journal of Bioscience and Bioengineering·Chengliang LiuKenji Furukawa
Mar 14, 2016·Bioresource Technology·Giorgio ManninaGaspare Viviani
Feb 22, 2008·Systematic and Applied Microbiology·Nico C G TanMike S M Jetten
Jan 6, 2007·Journal of Hazardous Materials·Ren-Cun JinBao-Lan Hu
Apr 20, 2016·Journal of Environmental Sciences (China)·Wipasanee TangkitjawisutBenjaporn Boonchayaanant Suwannasilp
Sep 1, 2008·Microbial Biotechnology·Roland J Siezen, Marco Galardini
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Sep 15, 2006·Trends in Biotechnology·Holger DaimsMichael Wagner
Mar 24, 2012·Bioresource Technology·Chun MaQian-Qian Zhang
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Sep 2, 2011·Environmental Technology·Simone VendramelGeraldo L Sant'Anna
Jan 9, 2016·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Alexandra FumasoliKai M Udert
May 23, 2019·Environmental Science and Pollution Research International·Anabela VieiraAdrian Oehmen
Feb 13, 2018·Water Science and Technology : a Journal of the International Association on Water Pollution Research·J C Leyva-DíazJ M Poyatos

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