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Effect of continuous Cd feeding on the performance of a nitrification reactor

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dc.contributor.authorSEMERCİ, NESLİHAN
dc.contributor.authorsSemerci, Neslihan; Cecen, Ferhan
dc.date.accessioned2022-03-12T17:37:32Z
dc.date.available2022-03-12T17:37:32Z
dc.date.issued2009
dc.description.abstractThe inhibitory effect of Cd on nitrification was investigated in a continuous-flow system with enriched nitrifying bacteria. The maximum specific ammonium utilization rate and the half-saturation constant were found as 671 mg NH4-N/g VSS day and 0.48 mg/l, respectively. In the case of continuous Cd input at 1 and 2.5 mg/l, nitrification was inhibited by 30% and 47%, respectively. Inhibition ranged from 20% to 40% and no further increase in inhibition was exhibited in new runs except at 10 mg/l influent Cd. At 10 mg/l influent Cd, specific ammonium utilization and nitrate production rates were inhibited by 90%. On the contrary, a serious nitrite accumulation was not observed during this period. When Cd feeding was stopped, recovery from inhibition was observed after 37 day which was seen by the improvement in ammonium utilization and nitrate production rates. A shift in microbial population from the initial Nitrosomonas sp. to the Cd-tolerant Nitrosospira sp. was observed in the recovery period from severe Cd inhibition. After the domination of Nitrosospira species, redosing at 10 mg/l and then at 15 mg/l did not affect the performance as before.
dc.identifier.doi10.1007/s10532-008-9209-z
dc.identifier.eissn1572-9729
dc.identifier.issn0923-9820
dc.identifier.pubmed18677441
dc.identifier.urihttps://hdl.handle.net/11424/229389
dc.identifier.wosWOS:000263785300002
dc.language.isoeng
dc.publisherSPRINGER
dc.relation.ispartofBIODEGRADATION
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectCadmium
dc.subjectInhibition
dc.subjectNitrification
dc.subjectActivated sludge
dc.subjectNitrosospira
dc.subjectCADMIUM SPECIATION
dc.subjectINHIBITION
dc.subjectMETALS
dc.subjectTOXICITY
dc.subjectCHROMIUM
dc.subjectGROWTH
dc.titleEffect of continuous Cd feeding on the performance of a nitrification reactor
dc.typearticle
dspace.entity.typePublication
local.avesis.id92b58e27-6e8a-494e-810a-680259668fda
local.import.packageSS17
local.indexed.atWOS
local.indexed.atSCOPUS
local.indexed.atPUBMED
local.journal.numberofpages10
oaire.citation.endPage164
oaire.citation.issue2
oaire.citation.startPage155
oaire.citation.titleBIODEGRADATION
oaire.citation.volume20
relation.isAuthorOfPublication2b40c564-3821-44aa-b6e7-770e18c2e489
relation.isAuthorOfPublication.latestForDiscovery2b40c564-3821-44aa-b6e7-770e18c2e489

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