The percentage extraction was found to increase with increasing acid concentration, giving a maximum value of 89.89 % with 7 mole L-1 of HNO3.
The percentage extraction increased with increasing TBP concentration and maximum was observed with its 25 % solution .
Caption: Figure 6: Plots of percentage extraction
The comparison of composition of the ethanol and acetone extracts of Eruca sativa (Taramira) and Rananculus muricatus (Castor) reveals that the solvent influences the percentage extraction
of different acids.
Figure 12 shows that process temperatures at which the percentage extraction
of BA was maximum using various extraction techniques were found to be 70[degrees]C (0.27% w/w), 25[degrees]C (0.25%w/w), 68[degrees]C (0.34% w/w), and 70[degrees]C (0.39%w/w) for STR, USO, SOX, and MAE techniques, respectively.
TWP is to furnish the major part of the treatment plant, extraction of gold, and give a guarantee of percentage extraction
performance in exchange for a toll-fee per tonne.
Earlier mining studies identified that open stopping options led to poor recoveries (low percentage extraction
) as well as having safety risks.
is 60-75% and continuous miner utilisation is 70%.
We can now set up the optimal extraction problem as that of choosing a time path of percentage extraction
rates [Mathematical Expression Omitted] to maximise
of dichromate by extractant 3, 4 and copolymer 6 (%)
This company's experience is also that percentage extraction
by longwall is lower than with continuous mining.
A graphical comparison of percentage extraction
efficiency is shown in Fig.