What is the use of Electroosmosis?

Electro-osmotic flow is commonly used in microfluidic devices, soil analysis and processing, and chemical analysis, all of which routinely involve systems with highly charged surfaces, often of oxides.

What is the difference between electrophoresis and electroosmosis?

In electrophoresis the solid molecules are moved using an electric field. In electrophoresis, the gel is used as a medium to separate the molecules. In electroosmosis, the movement of liquid takes place through a material using an electric field.

What is Electroendosmosis in electrophoresis?

Several gels used routinely for protein electrophoresis attract positive ions from the buffer and form a positive ion cloud. This ion cloud moves in the opposite direction to the cathode. This phenomenon is called electroendosmosis or endosmosis.

What is electroosmotic flow Why does it occur?

Electroosmotic flow occurs because the walls of the capillary tubing are electrically charged. The surface of a silica capillary contains large numbers of silanol groups (–SiOH). At pH levels greater than approximately 2 or 3, the silanol groups ionize to form negatively charged silanate ions (–SiO–).

What is electro Endosmosis?

Electroendosmosis is the movement of liquid in a porous material due to an applied electric field. Electroendosmosis is a very effective instrument when treating heterogeneous, silt and clay-rich soil. The phenomenon of electro-osmosis is very useful in chemical separation techniques and buffered solutions.

What is the difference between electrophoresis and electrodialysis?

is that electrodialysis is a form of dialysis in which the rate is increased by the presence of an electric potential across the membrane, especially one using an ion-selective membrane while electrophoresis is the migration of electrically charged molecules through a medium under the influence of an electric field.

What is Electroendosmosis effect?

What is Electroosmotic force?

Electroosmotic flow occurs when an applied driving voltage interacts with the net charge in the electrical double layer near the liquid/solid interface resulting in a local net body force that induces the bulk liquid motion.

Why is electroosmotic flow pH dependent?

The electro-osmotic flow (EOF) can be described in terms of velocity or mobility. Because the charge on the capillary varies as a function of pH, the zeta potential also varies with pH, meaning the mobility and velocity of the EOF are highly pH dependent.

What is the principle of electrophoresis?

Principles. Electrophoresis is a general term that describes the migration and separation of charged particles (ions) under the influence of an electric field. An electrophoretic system consists of two electrodes of opposite charge (anode, cathode), connected by a conducting medium called an electrolyte.

What is electrophoresis in chemistry class 12?

The movement of colloidal particles under the influence of an electric field is called electrophoresis. Negatively charged particles move towards the cathode and Positively charged particles moves towards anode.

What is electrodialysis in water treatment?

Electrodialysis (ED) is an electric field gradient-driven process enabling the separation of mineral matter from feed water solution while moving dissociated ions, that are either positively or negatively charged (cations or anions), through ion-selective membranes and forming two different flows – desalted flow …

What are the benefits of electelectro-osmosis?

Electro-osmosis has achieved two benefits when properly applied: Provides uniform pore water movement in most types of soil. The size of the pore is not important. Electro-osmotic flow rate is primarily a function of applied voltage. The electricity applied to the soil directly results in the heating of the soil.

What is electroosmosis in chemistry?

Electroosmosis is a phenomenon describing water molecules being dragged along as solvation shell by the protons, which are conducted from anode to cathode. The electroosmotic coefficient Cdrag corresponds to the water molecules, transported by a single proton (see Eq. 3.9 ),

What is electroosmosis soil used for?

Electroosmosis has been used for soil drying after the First World War. Especially for building purposes, dryer soil strengthens the bond between the foundation and the soil. Electroosmosis is also used for removing water from clay, peat, and excavation mud.

What is electelectroosmotic flow?

Electroosmotic flow differs from conventional laminar flow in that the driving force is not a pressure gradient but an externally applied electric field. The “effective pressure” or the “equivalent pressure” required to produce the same electroosmotic flow rate can be calculated using the Poseuille flow equation.