Please use this identifier to cite or link to this item: http://hdl.handle.net/11189/2045
Title: Potential of agro-waste extracts as supplements for the continuous bioremediation of free cyanide contaminated wastewater
Authors: Ntwampe, Seteno KO 
Santos, BAQ 
Keywords: Agricultural waste;Bioremediation;Cyanide;Wastewater
Issue Date: 2013
Source: Ntwampe, Seteno K.O. & Santos, Bruno A. Q. 2013. Potential of agro-waste extracts as supplements for the continuous bioremediation of free cyanide contaminated wastewater. International Journal of Environmental, Chemical, Ecological, Geological and Geophysical Engineering, 7(7): 493-497
Abstract: Different agricultural waste peels were assessed for their suitability to be used as primary substrates for the bioremediation of free cyanide (CN-) by a cyanide-degrading fungus Aspergillus awamori isolated from cyanide containing wastewater.The bioremediated CN- concentration were in the range of 36 to 110 mg CN-/L, with Orange (C. sinensis) > Carrot (D. carota) > Onion (A. cepa) > Apple (M. pumila), being chosen as suitable substrates for large scale CN- degradation processes due to: 1) the high concentration of bioremediated CN-, 2) total reduced sugars released into solution to sustain the biocatalyst, and 3) minimal residual NH4-N concentration after fermentation. The bioremediation rate constants (k) were 0.017h-1 (0h < t < 24h), with improved bioremediation rates (0.02189h-1) observed after 24h. The averaged nitrilase activity was~10 U/L.
URI: http://hdl.handle.net/11189/2045
http://scholar.waset.org/1999.6/16552
Appears in Collections:Appsc - Journal Articles (not DHET subsidised)
Prof. Seteno Karabo Ntwampe

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