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dc.contributor.authorSantos, BAQ-
dc.contributor.authorNtwampe, Seteno KO-
dc.contributor.authorDoughari, James Hamuel-
dc.contributor.authorMuchatibaya, G-
dc.description.abstractGeneration of cyanide-containing wastewater is a growing problem worldwide as numerous cyanide complexes are highly unstable and degrade to form free cyanide (F-CN) – the most toxic form of cyanide. Agro-waste materials, such as sweet orange (Citrus sinensis) waste from the citrus industry, are rich in readily metabolisable carbohydrates that can supplement microbial activity and thus support biodegradation of toxic compounds in wastewater. This study reports on optimal operating conditions for the continuous biodegradation of cyanide F-CN in wastewater using an Aspergillus awamori isolate in a process supported solely using C. sinensis waste extract. The optimal degradation conditions were at pH 8.75 W and 37.02 W C with the isolate’s F-CN tolerance being observed up to 430 mg F-CN/L. Furthermore, the residual ammonium produced as a by-product of F-CN degradation, was also metabolised by the A. awamori, with negligible residual citric acid and formate being observed in effluent recovered, i.e. post treatment. This study demonstrates the feasibility of using agricultural waste as a primary and sole carbon source for the cultivation of a cyanide-degrading A. awamori species for F-CN degradation under alkaline conditionsen_US
dc.publisherWater Science and Technologyen_US
dc.subjectAspergillus awamorien_US
dc.subjectCitrus sinensisen_US
dc.subjectFree cyanideen_US
dc.titleOperating conditions for the continuous bioremediation of free cyanide contaminated wastewater using Aspergillus awamorien_US
Appears in Collections:Appsc - Journal Articles (DHET subsidised)
Prof. Seteno Karabo Ntwampe
Prof. Seteno Karabo Ntwampe
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