Now showing items 11-20 of 541
Activation of bacteria in agglomerated ores by changing the composition of the leaching solution
This work presents preliminary results of a study to determine the technical feasibility of heap bioleaching of copper sulfides in a mixed ore that had previously undergone a chemical leach to recover the copper from the ...
COPPER REMOVAL FROM MOLYBDENITE BY SULFIDATION-LEACHING PROCESS
(JOHN WILEY & SONS INC, 2013)
Molybdenite (MoS2) concentrates are produced by differential flotation from bulk copper-molybdenum concentrates. However, complete separation of molybdenum by flotation is very difficult, thus, molybdenum concentrates ...
Released fraction of polychlorinated biphenyls from soil–biosolid system using a leaching procedure and its comparison with bioavailable fraction determined by wheat plant uptake
The bioavailability of polychlorinated biphenyls (PCBs) in soils amended with biosolids was estimated using an aqueous leaching process of the compounds combined with rotating disk sorptive extraction (RDSE), and compared ...
Batch leaching tests of motherboards to assess environmental contamination by bromine, platinum group elements and other selected heavy metals
In this study, a batch leaching test was executed to evaluate the toxicity associated with chemicals contained in motherboards. The leaching solutions used were distilled water, nitric acid, acetic acid and synthetic acid ...
Pesticide dispersion-advection equation with soil temperature effect
(John Wiley & Sons LtdW SussexInglaterra, 2003)
Gold recovery from waste electrical and electronic equipment by electrodeposition: A feasibility study
(Elsevier B.V., 2015-10-01)
Due to rapid technological progress, the replacement of electronic equipment is very often necessary, leading to huge amounts that end up as waste. Printed circuit boards (PCBs) constitute a unique section among Waste ...
Oxidative dissolution of bornite by Acidithiobacillus ferrooxidans
(Elsevier B.V., 2010-01-01)
The oxidation of finely ground (-200 mu m) bornite (Cu(5)FeS(4)) by Acidithiobacillus ferrooxidans was evaluated in oxygen uptake and shake flasks experiments. The oxidation was a net acid-consuming reaction. Residual ...
Leaching of nitrate and ammonium from cover crop straws as affected by rainfall
(Taylor & Francis Inc, 2005-01-01)
Nitrogen (N) mineralization dynamics in no-till systems is affected, among other factors, by N amount and quality in the mulch and by climatic conditions. Leaching of NO3-N and NH4-N from six plant species used as soil ...