What is the difference between dialysis and dialysis, and what is the principle of dialysis?

Dialysis. Difference from osmosis Dialysis: molecules, ions pass through a semi-permeable membrane.

Whereas, colloidal particles cannot pass through the process of semi-permeable membrane. The principle of dialysis is similar to that of colloidal dialysis. During dialysis, the patient's blood passes through a dialysis membrane immersed in the dialysate solution.

Dialysis is a kind of membrane separation operation driven by concentration difference, using the selective permeability of the membrane to solutes to achieve the separation of solutes with different propertiesDialysis is a separation and purification technology that separates small molecules from biological macromolecules through the principle of diffusion into water (or buffer) through semi-permeable membranes. Dialysis** is a method of excreting components (solutes or water) in body fluids through semi-permeable membranes, which can generally be divided into hemodialysis and peritoneal dialysis.

Dialysis is the flow of a high-concentration liquid to a low-concentration liquid, while dialysis is the opposite.

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Dialysis is based on the impermeability of colloidal particlesSemi-permeable membrane, while molecules and ions can permeate semipermeable membranes. However, colloidal particles can penetrate filter paper, so the colloidal cannot be purified with filter paper.

Explain in detail. A selective permeability method for separating particles of different solutes using semipermeable membranes. Dialysis of charged solute particles (such as ions, colloidal particles, etc.) in solution under the action of an electric field is called electrodialysis.

Electrodialysis is widely used in chemical industry, light industry, metallurgy, papermaking, seawater desalination, environmental protection and other fields; In recent years, it has been widely used in amino acids.

Protein, serum.

and other biological products purification and research.

There are many types of electrodialyzers, wThe three-chamber type of Bori is representative, and its structure is shown in the figure. The electrodialyzer is composed of three chambers: anode chamber, intermediate chamber and cathode chamber, the middle Yanshan DD is a well-sealed semi-permeable membrane, E is a sheet or rod electrode such as PT, AG, CU, etc., F is a glass tube connected to the intermediate chamber for washing, and S is a pH meter.

Electrodialysis is essentially a desalination technique.

Positive and late modes and negative ions in the electrodialyzer.

The exchange membrane is selectively permeable, and a saline solution is placed in the device and direct current.

Under the effect, positive and negative ions migrate to the cathode and anode through the membrane, respectively. Finally, in the intermediate chamber between the two membranes, the concentration of salt decreases, and the cathode and anode chambers are concentrator chambers.

Electrodialysis methods can be used for electrolytes.

solutes or certain substances for desalination, concentration, separation, or preparation of certain electrolytic products. In the application of real code auspiciousness, more than 100 pairs of exchange membranes are usually used to improve the separation efficiency. In the process of electrodialysis, factors such as ion exchange membrane permeability, ion concentration diffusion, water permeability, and polarization ionization will affect the separation efficiency.

1. Dialysis: also known as dialysis. A membrane separation operation driven by concentration difference, which uses the selective permeability of the membrane to solutes to achieve the separation of solutes with different properties. That is, the use of semi-permeable membranes.

The process of removing small molecules or ions as impurities from the sol by the properties of small molecules and ions but not colloidal particles.

2. During dialysis, the colloidal solution is quietly placed in the dialyzer composed of semi-permeable membranes, and the dispersal medium (usually water) of the colloidal solution is regularly replaced outside the device to achieve the purpose of purifying the colloid. During dialysis, the external direct current electric field can often accelerate the diffusion of small liters of dissent ions from the inside of the membrane to the outside of the membrane, which is called electrodialysis.

electrodialysis)。

Filtration uses a funnel to separate the resulting precipitate from the solution; Permeation paralysis is the use of semi-permeable membranes for separating colloids from solutions or for the purification of colloids (such as the purification of Luzhi:Fe(OH)3 colloids).

Dialysis refers to a method of separating substances using the phenomenon of oil or other liquids precipitating from grease. It is a commonly used method of extracting and separating substances in industry and scientific research.

During dialysis, the colloidal solution is placed in a semi-permeable membrane.

The dispersion medium (usually water) of the colloidal solution can be replaced regularly inside and outside the dialyzer to achieve the purpose of digging and purifying colloids.

There are three types of osmosis:Rely on the large and small "pores" in the film to separate molecules or particles of different sizes;

The ionic structure of the film is relied on to separate ions with different properties, e.g. with cations.

The finch film made of exchange resin can pass through cations, called cation exchange membranes, and uses anions.

The film made of resin can pass through anions, which is called an anion exchange membrane;

Relying on thin films: the selective solubility of certain substances separates, such as acetic acid.

Fibrous membranes have the ability to dissolve certain liquids and gases, allowing these substances to pass through the membrane.

Semi-permeable membranes (e.g., parchment paper, bladder membranes) are used to separate the sol from the impurities contained therein. 2. Infiltration: The liquid penetrates through the small voids of the object.

2. Different emphases: 1. Dialysis: Dialysis is the process of removing small molecules or ions as impurities from the sol by using small molecules and small ions that can penetrate the semi-permeable membrane, but colloidal particles cannot penetrate the semi-permeable membrane. During dialysis, the colloidal solution is placed in a dialyzer composed of a semi-permeable membrane, and the dispersion medium (usually water) of the colloidal solution is changed regularly outside the dialyzer to achieve the purpose of purifying colloids.

2. Permeation balancing: the basic principle of osmosis When pure water and brine are separated by an ideal semi-permeable membrane, the ideal semi-permeable membrane only allows water to pass through the shed and prevent salt from passing through, at this time, the water on the pure water side of the membrane will spontaneously flow into the saline side through the semi-permeable membrane, this phenomenon is called osmosis. 3. Different sources 1. Dialysis:

Mao Dun "A Person of Sufficient Degree": "They were in twos and threes, unusually calm, leisurely from the bare-chested, sweat-soaked clothes, pink fox smelly pile, dialyzing. "2. Infiltration:

Wei Wei "Who is the cutest person, cherish the affection of others": "Every flower and leaf here is permeated with the sweat and affection of the soldiers!" ”

Dialysis: also known as dialysis, a membrane separation operation driven by concentration difference, using the membrane to select hail solutes to achieve the separation of solutes with different properties. That is, the process of removing small molecules or ions as impurities from the sol by using the properties of semipermeable membranes that can permeate small molecules and ions, but cannot permeate colloidal particles.

Penah. Dialysis is the process by which solutes cross the membrane from the donor body into the recipient phase under the action of a concentration gradient. In membrane dialysis, the number of solute molecules permeable through the membrane per unit time, i.e., the flux, is related to factors such as the area and thickness of the membrane, the concentration gradient of the solute, and the diffusion coefficient. The diffusion coefficient is determined by the viscosity of the sample, temperature, pore size of the membrane and other factors.

Another important factor influencing flux is the cut-off molecular weight in relation to the pore size of the membrane.

During dialysis, the colloidal solution is placed in the dialyzer composed of a semi-permeable membrane, and the dispersion medium of the colloidal solution is regularly replaced outside the device, usually water, to achieve the purpose of purifying the colloid.