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Nitrification and aerobic denitrification in cyanide-containing wastewaterMpongwana, Ncumisa January 2016 (has links)
Thesis (MTech (Chemical Engineering))--Cape Peninsula University of Technology, 2016. / Anthropogenic activities that utilise cyanide in various chemical forms have resulted in the disposal of cyanide-contaminated effluents into drainage systems that ultimately reach wastewater treatment plants (WWTP), without prior treatment. Cyanides (CN) and soluble salts could potentially inhibit biological processes in WWTP, which are responsible for the removal of contaminants from incoming wastewaters. The removal of nitrogenous compounds from such waters in processes such as nitrification and denitrification is among the core biological processes used to treat wastewaters in WWTP. Electroplating and mining industries are among the perpetrators of cyanide contamination of WWTP. The presence of these hazardous contaminants results in the alteration of metabolic functions of the microbial populations that are utilised in WWTP, thus rendering the wastewater treatment process ineffective. In this study, bacterial isolates that were able to carry out nitrification and aerobic denitrification under high salinity cyanogenic conditions were isolated from poultry slaughterhouse effluent. These strains were referred to as I, H and G. The isolated bacterial species were found to be able to oxidise ammonium nitrogen (NH4-N) in the presence of free cyanide (CN-) under halophilic conditions. Isolates I, H and G were identified using the 16S rDNA gene and were identified to be Enterobacter sp., Yersinia sp. and Serratia sp., respectively. Furthermore, Response Surface Methodology was used to optimise the physicochemical conditions suitable for the proliferation of the isolates for free-cyanide degradation, nitrification and aerobic denitrification.
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Redox-active carbonyl complexes of manganeseBrown, Nathan Charles January 1995 (has links)
No description available.
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Gold adsorption on active carbonSteele, Carl James January 1996 (has links)
No description available.
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The asymmetric synthesis of #alpha#-amino acids from iminesJones, Catrin A. January 1997 (has links)
No description available.
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The activities of carbon for the adsorption of gold from cyanide solutionsRabb, David D. January 1939 (has links)
No description available.
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Experimental work with very dilute cyanide concentrations in the treatment of gold oresStewart, Harrie Badger, 1912- January 1940 (has links)
No description available.
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A study of frothing reagents for the flotation of activated carbonMontfort, José Vargas, 1919- January 1941 (has links)
No description available.
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A comparison of various methods of assaying cyanide solutions for goldDunn, Theodore Saunders. January 1910 (has links) (PDF)
Thesis (B.S.)--University of Missouri, School of Mines and Metallurgy, 1910. / The entire thesis text is included in file. Typescript. Illustrated by author. Title from title screen of thesis/dissertation PDF file (viewed March 17, 2009) Includes bibliographical references (p. 26).
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Design of a mill for a cyanide plantFach, Charles Albert. January 1900 (has links) (PDF)
Thesis (B.S.)--University of Missouri, School of Mines and Metallurgy, 1900. / The entire thesis text is included in file. Typescript. Title from title screen of thesis/dissertation PDF file (viewed October 27, 2008)
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A study to determine a process for the treatment of an amalgamation tailingMitchell, Robert Bruce. Engelmann, Edward William. January 1911 (has links) (PDF)
Thesis (B.S.)--University of Missouri, School of Mines and Metallurgy, 1911. / The entire thesis text is included in file. Typescript. Illustrated by authors. Title from title screen of thesis/dissertation PDF file (viewed February 27, 2009)
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