Results 181 to 190 of about 853 (195)
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Assessment of cyanogenic glucoside (cyanide) residues in Mbege: an opaque traditional Tanzanian beer
International Journal of Food Sciences and Nutrition, 1998Levels of cyanide in two varieties of malted millet, spent grain (Machicha) and opaque beer (Mbege) were determined. Protein content and amino acid composition of the malt, Mbege and Machicha were determined. Mbege was made in the laboratory using an improved method.
N B, Shayo +3 more
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Some aspects of cyanide residues in gold mine wastes
2022This thesis was scanned from the print manuscript for digital preservation and is copyright the author. Researchers can access this thesis by asking their local university, institution or public library to make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
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Recovery of Iron from Cyanide Residues by Carbothermic Reduction-Magnetic Separation
Applied Mechanics and Materials, 2014A craft of carbothermic reduction-magnetic separation process is investigated for the recovery of iron from cyanide residues, a hazardous industrial wastes when produce gold with cyanide leaching method. The cyanide residues, containing 30.12% Fe was conducted for the craft.
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Cyanide residue levels in extracted honey, comb honey and wax cappings1
Journal of Environmental Science and Health, Part B, 1979Abstract Cyanide (CN) residue levels were determined in samples of extracted honey, comb honey and wax cappings at 1 hr, 24 hr, and 48 hr intervals after destroying the bees in honey bee colonies, with normal (ca 8.5 g) and twice normal (ca. 17 g) doses of CyanogasR A‐dust.
M. Ihnat, D. L. Nelson
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The influence of cyanide on the flotation of pyrite from Witwatersrand gold leach residues
Minerals Engineering, 1995Abstract A significant portion of the gold in Witwatersrand ores may occur in the pyritic fraction, which seldom comprises more than 4% of the ore. Consequently, pyrite recovery through flotation offers the opportunity to improve gold recoveries through further treatment of the pyritic concentrate.
J.R. De Wet +4 more
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The influence of cyanide on pyrite flotation from gold leach residues with sodium isobutyl xanthate
International Journal of Mineral Processing, 1997Abstract Impedance measurements, linear voltammetry, and flotation tests were carried out to determine the influence of NaCN on the flotation of pyrite from gold leach residues. The mixed potential of the pyrite electrode was found to decrease in the presence of NaCN.
J.R. de Wet +2 more
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2018
Pressure oxidative treatment of whole ores and/or mineral concentrates is used to leach or liberate metals of value for downstream recovery. Silver, when present, is often lost in processing, precipitating as a cyanide-insoluble jarosite in the residue.
R. T. Seaman, K. Mayhew
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Pressure oxidative treatment of whole ores and/or mineral concentrates is used to leach or liberate metals of value for downstream recovery. Silver, when present, is often lost in processing, precipitating as a cyanide-insoluble jarosite in the residue.
R. T. Seaman, K. Mayhew
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International Journal of Food Sciences and Nutrition, 1993
Forty-eight weanling albino rats were used to investigate the dietary implications of the residual cyanide levels of garri using performance, nitrogen balance, relative organ weights, serum and urinary thiocyanate and some haematological variables as the response criteria. The experimental rats showed no outward signs of toxicity.
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Forty-eight weanling albino rats were used to investigate the dietary implications of the residual cyanide levels of garri using performance, nitrogen balance, relative organ weights, serum and urinary thiocyanate and some haematological variables as the response criteria. The experimental rats showed no outward signs of toxicity.
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International Journal of Food Sciences and Nutrition, 1993
Random samples (n = 108) of commercial garri collected from the main garri-producing communities in Nigeria were analysed for total, free and bound hydrocyanic acid (HCN) content. The samples contained highly variable levels of total HCN (1.3–38.6 mg HCN/kg) and free HCN (1.2–32.4 mg/kg).
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Random samples (n = 108) of commercial garri collected from the main garri-producing communities in Nigeria were analysed for total, free and bound hydrocyanic acid (HCN) content. The samples contained highly variable levels of total HCN (1.3–38.6 mg HCN/kg) and free HCN (1.2–32.4 mg/kg).
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Speciation and evolution of cyanide compounds in coal pyrolysis residues
2002Les usines à gaz produisaient des résidus cyanurés (matières épurantes). Afin d'estimer leur impact sur l'environnement, une méthodologie combinant à la fois l'analyse directe sur solides et des filtrats d'extractions aqueuses à différents pH a été développée.
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