Please use this identifier to cite or link to this item: http://hdl.handle.net/11189/5287
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dc.contributor.authorMpongwana, Men_US
dc.contributor.authorNtwampe, Seteno KOen_US
dc.contributor.authorMekuto, Len_US
dc.contributor.authorAkinpelu, Enoch Akinbiyien_US
dc.contributor.authorDyantyi, SAen_US
dc.contributor.authorMpentshu, Yen_US
dc.date.accessioned2016-11-25T08:56:36Z-
dc.date.available2016-11-25T08:56:36Z-
dc.date.issued2016-
dc.identifier.citationMpongwana, N., Ntwampe, S.K.O., Mekuto, L., Akinpelu, E.A., Dyantyi, S. and Mpentshu, Y., 2016. Isolation of high-salinity-tolerant bacterial strains, Enterobacter sp., Serratia sp., Yersinia sp., for nitrification and aerobic denitrification under cyanogenic conditions. Water Science and Technology, 73(9),2168-2175.en_US
dc.identifier.urihttp://dx.doi.org/10.2166/wst.2016.070-
dc.identifier.urihttp://hdl.handle.net/11189/5287-
dc.description.abstractCyanides (CN−) and soluble salts could potentially inhibit biological processes in wastewater treatment plants (WWTPs), such as nitrification and denitrification. Cyanide in wastewater can alter metabolic functions of microbial populations in WWTPs, thus significantly inhibiting nitrifier and denitrifier metabolic processes, rendering the water treatment processes ineffective. In this study, bacterial isolates that are tolerant to high salinity conditions, which are capable of nitrification and aerobic denitrification under cyanogenic conditions, were isolated from a poultry slaughterhouse effluent. Three of the bacterial isolates were found to be able to oxidise NH4-N in the presence of 65.91 mg/L of free cyanide (CN−) under saline conditions, i.e. 4.5% (w/v) NaCl. The isolates I, H and G, were identified as Enterobacter sp., Yersinia sp. and Serratia sp., respectively. Results showed that 81% (I), 71% (G) and 75% (H) of 400 mg/L NH4-N was biodegraded (nitrification) within 72 h, with the rates of biodegradation being suitably described by first order reactions, with rate constants being: 4.19 h−1 (I), 4.21 h−1 (H) and 3.79 h−1 (G), respectively, with correlation coefficients ranging between 0.82 and 0.89. Chemical oxygen demand (COD) removal rates were 38% (I), 42% (H) and 48% (G), over a period of 168 h with COD reduction being highest at near neutral pH.en_US
dc.language.isoenen_US
dc.publisherIWA Publishingen_US
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/3.0/za/Eng
dc.subjectCyanidesen_US
dc.subjectDenitrificationen_US
dc.subjectNitrificationen_US
dc.subjectEnterobacteren_US
dc.titleIsolation of high-salinity-tolerant bacterial strains, Enterobacter sp., Serratia sp., Yersinia sp., for nitrification and aerobic denitrification under cyanogenic conditionsen_US
dc.type.patentArticleen_US
Appears in Collections:Appsc - Journal Articles (DHET subsidised)
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