The protonation constant of oxamic acid in aqueous solution and in water-tetrahydrofuran mixture, at different temperatures and ionic strengths

1970 ◽  
Vol 4 ◽  
pp. 529-532 ◽  
Author(s):  
A. Braibanti ◽  
E. Leporati ◽  
F. Dallavalle
Keyword(s):  
Aqueous Solution ◽  
Protonation Constant ◽  
Different Temperatures

scholarly journals Adsorption of Phosphate Ions from Aqueous Solution of Nickel Hydroxides Calcined at Different Temperatures

2014 ◽  
Vol 12 (0) ◽  
pp. 404-409 ◽  
Author(s):  
Fumihiko Ogata ◽  
Daisuke Imai ◽  
Megumu Toda ◽  
Masashi Otani ◽  
Naohito Kawasaki
Keyword(s):  
Aqueous Solution ◽  
Phosphate Ions ◽  
Different Temperatures

scholarly journals Removal of Phenol from Aqueous Solution by Adsorption on to Coal Fly Ash

1996 ◽  
Vol 13 (6) ◽  
pp. 527-536 ◽  
Author(s):  
L.J. Alemany ◽  
M.C. Jiménez ◽  
M.A. Larrubia ◽  
F. Delgado ◽  
J.M. Blasco
Keyword(s):  
Aqueous Solution ◽  
Fly Ash ◽  
Removal Efficiency ◽  
Ph Value ◽  
Coal Fly Ash ◽  
Solid Wastes ◽  
Power Stations ◽  
Different Temperatures ◽  
Coal Power ◽  
Coal Power Stations

The present work examines the possible use of fly ash, a byproduct of coal power stations, as a means of removing phenol from water, or equivalently, of restricting its movement in solid wastes or soil. Equilibrium experiments were performed to evaluate the removal efficiency of fly ash. The adsorption experiments were undertaken using fly ash treated at three different pH levels and with three different temperatures. The results indicate that although phenol can be removed from water, this depends markedly on the temperature and pH value of the treatment solution employed.

scholarly journals Surface Characterization and Thermodynamics of Adsorption of Pr, Nd and Er on Alumina from Aqueous Solution

1992 ◽  
Vol 9 (1) ◽  
pp. 17-29 ◽  
Author(s):  
M. Saleem ◽  
M. Afzal ◽  
F. Mahmood ◽  
A. Ali
Keyword(s):  
Aqueous Solution ◽  
Particle Size ◽  
Free Energy ◽  
Adsorption Isotherms ◽  
Surface Characterization ◽  
Average Particle Size ◽  
Average Particle ◽  
Enthalpy Of Adsorption ◽  
Different Temperatures ◽  
Isotherm Equations

The porous nature of alumina has been investigated using various techniques. The values obtained for moisture content, surface area, pore volume, average particle size and porosity were 22%, 116 m2/g, 0.76 cm3/g, 17.0±0.5 μm and 68.0%, respectively. The adsorption isotherms of NdIII, PrIII and ErIII on alumina from aqueous solution have been obtained at different temperatures. All these adsorption isotherms obey the Langmuir, Freundlich and Dubinin-Radushkevich isotherm equations. Thermodynamic parameters such as the free energy, entropy and enthalpy of adsorption have been computed and interpreted. It is noteworthy that the adsorption of PrIII and NdIII increases with decreasing temperature while the reverse is observed for ErIII.

Removal of Methylene Blue from Aqueous Solution by Powdered Expanded Graphite: Adsorption Isotherms and Thermodynamics

2012 ◽  
Vol 424-425 ◽  
pp. 1313-1317 ◽  
Author(s):  
Shui Cheng Tan ◽  
Peng Hui Shi ◽  
Rui Jing Su ◽  
Min Cong Zhu
Keyword(s):  
Aqueous Solution ◽  
Methylene Blue ◽  
Adsorption Isotherms ◽  
Dye Adsorption ◽  
Expanded Graphite ◽  
Solution Ph ◽  
Adsorption Behaviors ◽  
Different Temperatures ◽  
Isotherms And Thermodynamics ◽  
Langmuir And Freundlich Equations

The powdered expanded graphite (EG) was used as a porous adsorbent for the removal of the cationic dye, methylene blue (MB), from aqueous solution. The dye adsorption experiments were carried out with the bath procedure. Adsorption isotherms at different temperatures were determined and modeled with Langmuir and Freundlich equations. Thermodynamic parameters were calculated and correlated with the adsorption behaviors. The effects of solution pH on the adsorption were also studied.

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