Now showing items 1-10 of 260
Use of Aspergillus niger in the bioleaching of colemanite for the production of boric acid
(Pontificia Universidad Católica de Valparaíso, 2011)
The mechanism of 234U 238U activity ratio enhancement in karstic limestone groundwater
(Elsevier B.V., 1993-01-05)
Experimental etch/leach of Carboniferous Limestone gravels on a laboratory time-scale has demonstrated that 234U 238U activity ratios (AR's) greater than the radiochemical equilibrium value may be generated on short ...
BIOSOLIDS IN LEACHING OF HERBICIDES MIMICKING AUXIN IN TROPICAL SOILS
(Univ Federal Vicosa, 2018-01-01)
Biosolids are residues from the treatment of urban fluids used as a source of nutrients for agricultural and forestry crops. The organic matter contained in this residue and its chemical characteristics may interfere with ...
Optimal Design of the Leaching Stage in the Manufacturing Process of Surimi Gel
(American Chemical Society, 2013-08)
The leaching stage in the manufacturing process of surimi gel requires a large amount of wash water contributing to a high operating cost. Therefore, the minimization of the wash water demand is essential for a low cost ...
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 ...
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 ...