Sadegh Yousefi

8 Questions 6 Answers 0 Followers

Questions related from Sadegh Yousefi

PHREEQC based simulation for precipitation of salts in Ca-Mg-Na-K/Cl-H2O system during evaporation?

I want to predict the salt precipitation in Ca-Mg-Na-K/Cl-H2O system. In fact, I have a carnallite sample (containing 20 g CaCl2, 270 g NaCl, 180 g KCl and 140 g NaCl) and after complete...

10 January 2019 1,193 1 View

How much of salts are dissolve in water (T= 30°C) during partial dissolution of Carnallite (containing NaCl, KCl, MgCl2 and CaCl2) ?

Hi, I have mixed 0.5 L of H2O (T= 30°C) with 1 kg of Carnallite (containing 140 g NaCl, 180 g KCl, 270 g MgCl2 and 20 g CaCl2). Since that solubility of NaCl, KCl, MgCl2 and CaCl2 at 30°C are...

05 January 2019 3,902 3 View

Crystallite size measurement by Scherer formula?

Hi all, I calculated crystallite size for Mg(OH)2 sample from results of XRD. I used the strongest peak ( (101) ) to calculate FWHM. check other peaks to calculate the crystallite size and then...

27 July 2016 7,854 3 View

Effect of particles size on thermal behaviuor of nanoparticles?

Hi I'm going to put a nanomaterial (Mg(OH)2) with two types of particle size (different particle sizes) which have been synthesized under the same conditions under thermal analysis (DTA-TGA). Are...

10 July 2016 8,088 5 View

Preparation magnesium hydroxide / oxide samples for UV-Vis analysis?

Hi all, I'm going to analysis Mg(OH)2 and MgO by UV-Vis spectroscopy. For this purpose, which solvents are suitable for preparation of samples? Thank you S. Yousefi

05 June 2016 169 4 View

Effect poly ethylene glycol(PEG 4000) on pH increasing?

Hi all, I used PEG 4000 as surfactant in Mg(OH)2 synthesis process. Unlike normal when I used PEG pH range increased. Is PEG effect on increasing of pH due having -OH group? (s. yousefi)

18 May 2016 2,983 1 View

Relation between mass of salts and density of solution?

If 20 g CaCl2 and 270 g MgCl2 are dissolved in 1 liter H2O (density=1), what is the density? Your opinion about the following calculations? p=m/V m= m (H2O)+ m(Cal2+MgCl2)=1290...

01 January 1970 8,924 6 View

Cooperation in Research

Hi all, I am ready to collaborate in writing book chapters in extractive metallurgy, nanomaterials, synthesis of nanomaterials as well as research and writing scientific articles. please contact...

01 January 1970 6,443 1 View