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Effects of high free ammonia concentrations on the performances of anaerobic bioreactors

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dc.contributor.authorÇALLI, BARIŞ
dc.contributor.authorsCalli, B; Mertoglu, B; Inanc, B; Yenigun, O
dc.date.accessioned2022-03-12T17:21:28Z
dc.date.available2022-03-12T17:21:28Z
dc.date.issued2005
dc.description.abstractUASB reactors inoculated with different seed sludges were operated for 450 days under high ammonia concentrations to investigate inhibition effects. Reactors were fed with synthetic wastewater providing an organic loading of about 1.2 kg COD m(3) /day and having total ammonia nitrogen (TAN) concentrations gradually increasing from 1000 to 6000 mg/l. As, corresponding free ammonia nitrogen (FAN) concentrations elevated up to 800 mg/l, COD removal efficiencies in the range of 78-96% were determined. High removal efficiencies revealed that seed sludges taken from anaerobic reactors treating considerably low ammonia containing wastewaters have adapted to elevated free ammonia concentrations successfully. However, propionate accumulation in some reactors and decrease in eubacterial signals detected by fluorescent in situ hybridization (FISH) indicated that propionate degrading acetogenic bacteria are more sensitive than methanogenic archaea to free ammonia. Differences in the efficiencies of reactors were correlated with the quantity of resistant and sensitive microorganisms dominated in the reactors. (C) 2004 Elsevier Ltd. All rights reserved.
dc.identifier.doi10.1016/j.procbio.2004.05.008
dc.identifier.issn1359-5113
dc.identifier.urihttps://hdl.handle.net/11424/228340
dc.identifier.wosWOS:000225723800038
dc.language.isoeng
dc.publisherELSEVIER SCI LTD
dc.relation.ispartofPROCESS BIOCHEMISTRY
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectacetogenic bacteria
dc.subjectammonia
dc.subjectbutyrate
dc.subjectinhibition
dc.subjectpropionate
dc.subjectUASB reactor
dc.subjectMETHANOGENIC SLUDGE
dc.subjectDIGESTION
dc.subjectINHIBITION
dc.subjectTOXICITY
dc.subjectLEACHATE
dc.subjectNITROGEN
dc.subjectMANURE
dc.subjectPH
dc.subjectWASTEWATERS
dc.subjectADAPTATION
dc.titleEffects of high free ammonia concentrations on the performances of anaerobic bioreactors
dc.typearticle
dspace.entity.typePublication
local.avesis.id0d805197-cb12-4cab-ada0-1183b33e35ea
local.import.packageSS17
local.indexed.atWOS
local.indexed.atSCOPUS
local.journal.numberofpages8
oaire.citation.endPage1292
oaire.citation.issue3-4
oaire.citation.startPage1285
oaire.citation.titlePROCESS BIOCHEMISTRY
oaire.citation.volume40
relation.isAuthorOfPublication2e20fe96-469a-44e0-88b2-e56450a93cf6
relation.isAuthorOfPublication.latestForDiscovery2e20fe96-469a-44e0-88b2-e56450a93cf6

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