Publication

Recovery of phenol and copper from soils by electric field

Christos Comninellis
1998
Conference Papers

Abstract

Application of a direct elec. field in contaminated soils is expected to produce an important in situ means of environmental restoration. The factors that det. the success of the process are the combined effects of electroosmosis, ionic migration, electrochem. and chem. reactions. During extn. of copper, the pH of the purging soln. had significant influence on process efficiency. Extn. of 94-99 % of the initial copper present in kaolinite clay, under controlled acidic pH, has been achieved. During extn. of phenol, the efficiency of the process is detd. by the electroosmotic flow rate. More than 80 % of the initial phenol present in kaolinite clay has been recovered. The compn. of the pore soln. and the applied elec. field are the detg. parameters of the optimization of the process. [on SciFinder (R)]

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https://infoscience.epfl.ch/entities/publication/960f0aa9-1273-43c6-bad3-d06537a8441a

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Christos Comninellis
1998
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/960f0aa9-1273-43c6-bad3-d06537a8441a

About this result

Related concepts (32)

Electric field

An electric field (sometimes E-field) is the physical field that surrounds electrically charged particles and exerts force on all other charged particles in the field, either attracting or repelling them. It also refers to the physical field for a system of charged particles. Electric fields originate from electric charges and time-varying electric currents. Electric fields and magnetic fields are both manifestations of the electromagnetic field, one of the four fundamental interactions (also called forces) of nature.

Soil pH

Soil pH is a measure of the acidity or basicity (alkalinity) of a soil. Soil pH is a key characteristic that can be used to make informative analysis both qualitative and quantitatively regarding soil characteristics. pH is defined as the negative logarithm (base 10) of the activity of hydronium ions (H+ or, more precisely, H3O+aq) in a solution. In soils, it is measured in a slurry of soil mixed with water (or a salt solution, such as 0.01M CaCl2), and normally falls between 3 and 10, with 7 being neutral.

In chemistry, pH (piːˈeɪtʃ ), also referred to as acidity, historically denotes "potential of hydrogen" (or "power of hydrogen"). It is a scale used to specify the acidity or basicity of an aqueous solution. Acidic solutions (solutions with higher concentrations of hydrogen () ions) are measured to have lower pH values than basic or alkaline solutions. The pH scale is logarithmic and inversely indicates the activity of hydrogen ions in the solution. where [H+] is the equilibrium molar concentration (mol/L) of H+ in the solution.

Related publications (32)

Recovery of phenol and copper from soils by electric field

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