Three organic phosphorous compounds containing bridge
with (PhO) phenoxide and (Ph) phenyl group, to be used as materials derived element
cadmium ion according to the (liquid - liquid) extraction method that apply to widely used
in the restoration
of metal ions operations starting from aqueous solutions in mining
operations to environmental applications, and identified some of the physical properties
(melting point, spectra UV, IR).
Photometric method was adopted to determine the concentrations, as it used the
solution of 2-Nitroso, 1- Naphthol to determine the concentrations of cadmium ion in the
aqueous phase after extraction and its concentrations in the organic phase based on the
difference between the concentrations of primitive prepared aqueous solution and the final
concentrations in the aqueous phase.
Distribution Ratio DCd was studied of the ion cadmium between the aqueous medium
of the acid solution of Sulfuric and central Organic Dilutions containing different
concentrations of the previous prepared organophosphorus compounds also was studied the
Distribution Ratio DCd of ion cadmium depending of changing of pH-values in aqueous
medium and central organic Includes fixed concentration from the previous prepared
organophosphorus compounds and registered the distribution of information focus
numerically and graphically.
In this paper, detail technical and economic feasibility study are
implemented to use the improved solvent instead of the used
solvent in Syrian field (Sodium hydroxide, NaOH) until this time, to
prevent and remove the sulfur deposits in the gas w
ells that most
suffer from this problem.
Has also been confirmed on the technical best method for
suggested solvent injection and depend on the field data of the
studied wells /Jbissah-223, Jbissah-220/ to carrying out the required
economical calculations, and the sensitivity analyzing for changes
of economical with changes of dollar exchange rate and gas
production rate from studied wells are performed, and then the
curves of economic Feasibility study resulting from the
comparison process was drawing. And recommending the use of the
improved solvent where this solvent is the most economic solvent.
Three organic phosphorous compounds containing bridge = P(S)-NH-P(S) = with , (PhO) , (Ph) acting noble metals and rare earth elements, and identified some of the chemical and physical properties (melting point, spectra UV , IR ) .
Photometric meth
od adopted to determine the concentrations, as it used the solution of 2-Nitroso, 1- Naphthol to determine the concentrations of palladium ion in the aqueous phase after extraction and its concentrations in the organic phase based on the difference between the concentrations of primitive prepared and the final concentrations.
Distribution Ratio DPd was studied of the ion palladium between the aqueous medium of the acid solution of hydrochloric and central Organic Dilutions containing different concentrations of the previous prepared organo phosphorus compounds also was studied the Distribution Ratio DPd of ion palladium depending of changing of pH-values in aqueous medium and central organic Includes fixed concentration from the previous prepared organo phosphorus compounds and evaluated the distribution of information focus numerically and graphically .
The effect of the reversible photo-orientation of the Solvent Red 23 dye
incorporated in Poly (methyl methacrylate) thin films has been investigated. A
probe-pump optical system was used to investigate the dichroic behavior of the
samples. Orthogo
nal polarized laser light induces a smaller increase in the
transmitted beam intensity. A stronger polar order was induced using a
parallel pump-probe laser light compared to that of the perpendicular state. It
was found that the dichroic ratio value of the Poly (methyl methacrylate) /
Solvent Red 23 thin film is 4.952, which indicates that the net orientation of
Solvent Red 23 molecules is orthogonal to the applied beam field. The dynamic
evolution of the dichroic ratio showed that the relaxation is rather slow, and it
deteriorates in a slow logarithmic fashion, which may take a very long time in
order to reach the isotropic state.
In this paper, a proposal a chemical solvent to remove sulfur deposits within the tubes production of the wells that most suffer from this problem are done. Where the study was conducted on the referenced study about the characteristics and forms of
sulfur in the nature, and explain the Scheme phasic of sulfur and required conditions for the deposition of elemental sulfur within the tubes production. And has been clarified the mechanism of deposition and the outline of a simplified process for the nuclei of molecules from supersaturation sulfur vapor. Has also been depend on the field data of the studied wells /Jbissah-223, Jbissah-220/ (taken from the daily operational reports and Historical Biography of the wells), to conducting laboratory experiments in order to compare the between used solvent at field (NaOH) and proposed solvent (tallow amine activated diethyl disulfides) in this study in terms of the melt the deposited sulfur within the tubes production. and as a result, the curves resulting from the comparison process was drawn and recommending the use of the proposed solvent in treatment the acid gas wells in Jbissah fields that suffer from this problem where this solvent is the most effective and economical.
Separation with solvent extraction of Cu(II), Hg(II), and Cr(III) from
aqueous solution using the ligend (HL) as a new extractant has been studied.
The new acyclic Schiff Base (HL) was synthesized by reaction of 5-bromosalicylaldehyde
with 2-(2-Am
inoethyl)pyridine. The structure of the new
compound (HL) was confirmed by using FT-IR spectra, 1H-NMR and 13CNMR
spectra and mass spectra (MS). The effect of chloroform and
dichloromethan as organic solvents in the metal extractions was investigated at
20oC by using UV-visible Spectrometry. The influence of pH, ligand
concentration, shaking time and ratio of aqueous-to-organic phases on
extraction yield was tested at 20oC. The extractability of the tested metal ions
were evaluated.
