نتایج جستجو برای: ions concentration

تعداد نتایج: 500684  

Journal: :international journal of iron & steel society of iran 2015
a. a. m. hojati fahim e. nikomanzari

the effect of chloride ions concentration on the electrochemical behavior of aisi 410 stainless steel in thesimulated concrete pore (0.1 m naoh + 0.1 m koh) solution was investigated by various electrochemicalmethods such as potentiodynamic polarization, mott–schottky analysis and electrochemical impedancespectroscopy (eis). potentiodynamic polarization curves revealed that increasing chloride ...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2010
bhavna a. shah ajay v. shah pathik m. shah

salicylic acid-formaldehyde-m-cresol (sfm) terpolymer had been synthesized in dmf media by conventional method. the resulting resin had been characterized by ftir spectra, elemental and thermogravimetric analyses. the morphology of sfm resin had been studied by sem and optical photograph. various parameters like rate of equilibration, effect of ph on ion exchange capacity and effect of concentr...

Journal: :analytical and bioanalytical chemistry research 2015
hossein soltani mohammad reza yaftian abbasali zamani massomeh ghorbanloo

a new carboxylic acid extractant, named 2-(dibutylcarbamoyl)benzoic acid, is prepared and its potential for selective solvent extraction and recovery of lead ions from industrial samples was investigated. the slope analysis indicated that the lead ions are extracted by formation of 1:2 metal to ligand complexes. the effect of the parameters influencing the extraction efficiency including kind o...

Journal: :advances in environmental technology 0
saeed almohammadi department of chemical engineering, mahshahr branch, islamic azad university, mahshahr, iran masoomeh mirzaei department of chemical engineering, mahshahr branch, islamic azad university, mahshahr, iran

in this work, the removal of copper from an aqueous solution by granular activated carbon (gac) in the presence of competitor ions was studied. a batch adsorption was carried out and different parameters such as ph, contact time, initial copper concentration and competitor ions concentration were changed to determine the optimum conditions for adsorption. the optimum ph required for maximum ads...

ژورنال: طلوع بهداشت یزد 2013
رحیمیان, رضا, احرامپوش, محمد حسن, سلمانی, محمد حسین, عسکری شاهی, محسن, قانعیان, محمد تقی, مسعودی, حسین,

Background: Releasing of heavy metals in the environment caused by industrialization and urban, is a concern worldwide. Cadmium ion is toxic contaminants for Humans, Animals and plants that the maximum allowable concentration in water (0.005 mg/l) is defined by WHO. Different methods for removing heavy metals have been studied. In recent years, the use of low-cost adsorbent for removal of these...

A new carboxylic acid extractant, named 2-(dibutylcarbamoyl)benzoic acid, is prepared and its potential for selective solvent extraction and recovery of lead ions from industrial samples was investigated. The slope analysis indicated that the lead ions are extracted by formation of 1:2 metal to ligand complexes. The effect of the parameters influencing the extraction efficiency including kind o...

Journal: :iranian journal of chemistry and chemical engineering 0
mahdieh koorepazan moftakhar phase equilibria research laboratory, department of chemistry, faculty of science, university of zanjan, p. o. box 45371-38791, zanjan, i.r. iran leila habibi phase equilibria research laboratory, department of chemistry, faculty of science, university of zanjan, p. o. box 45371-38791, zanjan, i.r. iran mohammad reza yaftian phase equilibria research laboratory, department of chemistry, faculty of science, university of zanjan

the present paper concerns on the selective and very efficient transport of thorium(iv) ions from aqueous solutions through an emulsion liquid membranes composed by paraffin and a surfactant, without carrier requirement. the influence of ph of the external aqueous phase, the surfactant concentration in the membrane phase, the type, and concentration of the acid used in the receiving phase, the ...

Journal: :The Journal of experimental biology 1980
R G Boutilier G Shelton

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