What are the application of adsorption process in pharmacy?
Adsorption of small drug particles on the surface of large excipients has been widely used in the pharmaceutical industry for various purposes, such as improving content uniformity of low-dose drugs, enhancing the dissolution rate for poorly water-soluble drugs and enhancing some special formulation designs.
What is adsorption in pharmacy?
Adsorption is defined as the adhesion of atoms, ions, biomolecules or molecules of gas, liquid, or dissolved solids to a surface because of chemical or electrical attraction – typically accomplished with granular activated carbon to remove dissolved organics and chlorine.
What are the practical applications of adsorption in the field of chemical engineering?
Adsorption is present in many natural, physical, biological and chemical systems and is widely used in industrial applications such as heterogeneous catalysts, activated charcoal, capturing and using waste heat to provide cold water for air conditioning and other process requirements (adsorption chillers), synthetic …
What are the advantages of adsorption?
The advantages of adsorption are: Effectiveness (also at low contaminant concentrations) Selectivity (tailored adsorbents) Regenerability of used adsorbents.
What are the applications of absorption?
Nowadays, membrane gas absorption is used in industrial wastewater treatment, CO2 absorption from greenhouse gases, treatment of flue-gas and off-gas streams, which contain SO2, H2S, NH3 or HCl, upgrading and desulphurization of biogas from anaerobic digesters and landfills and acid gas removal of natural gas and …
What is application of adsorption?
(2) In Gas masks :This apparatus is used to adsorb poisonous gases (e.g. oxide of sulphur etc.) and thus purify the air for breathing. (3) For desiccation or dehumidification : These substances can be used to reduce/remove water vapours or moisture present in the air.
What are the types of adsorption?
There are two types of adsorption: Physical adsorption and Chemisorption. When there is adsorption of gases on a solid, two types of forces are operating.
What are the application of colloids?
A colloid is used as thickening agents in industrial products such as lubricants, lotions, toothpaste, coatings, etc. In the manufacture of paints and inks, colloids are useful. In ball-point pens, the ink used is a gel (liquid-solid colloid).
How is the performance of adsorption related to application?
In apply, adsorption performance is also powerfully influenced by the mass transfer of the species between the solution and therefore the} adsorbent surfaces and also the adsorption reaction rate. Technically, adsorption is, therefore, an equilibrium-diffusion-reaction method
Is there any involvement of potentials during adsorption?
There is no involvement of potentials during adsorption. It is not subdivided. Surface absorption is adsorption it is subdivided. These consists of silica gel or activated charcoal powder, when dust or smoke are paused through them, those particles get adsorbed on the surface of these materials.
Where is the concentration of gas in adsorption?
In general, adsorption is a surface phenomenon, where gas or liquid is concentrated on the surface of solid particles or fluid interfaces. There are many adsorption systems.
Which is an example of the use of adsorption?
Some common examples of adsorption are silica gel packets to adsorb moisture from packaged electronic or optical equipment, and carbon “filter” to deodorize drinking water. In pharmacy, activated charcoal is considered to be the most effective single agent available as an emergency decontaminant in the gastrointestinal tract.