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The sorption of a contaminant is one of the significant processes that can hinder the remediation of a ground water aquifer system. Sorption is defined as being the attraction of an aqueous species to the surface of a solid.(Alley, 1993). In ground water the sorbing species , usually an organic compound, is called thesorbate, and the solid media, usually soil, to which the sorbate is attracted is known as the sorbent.

The underlying principle behind this attraction results from some form of bonding between the contaminant and adsorption receptor sites on the solid. The amount of sorption that occurs in groundwater is dependent on particular characteristics of the sorbate and sorbent. The amount of sorption that takes place on organic matter also follows various isotherms or kinetic rates.

Sorption tends to cause contaminants to move more slowly than the groundwater, therefore the effects must be taken into consideration when calculating how far the contaminant has traveled in a given time period.

The following animation sequence displays how sorption can affect two separate particles' velocity. Basically, the animation shows a vertical cut from a soil column, interspersed particles of organic matter, and two contaminants that are moving through the soil.

Adsorption vs. AbsorptionSorption reactions generally occur over a short period of time, however if the adsorbed contaminant begins to be incorporated into the structure of the sorbent , a slow occurring reaction, known as absorption, begins to take place. To be more precise , the difference between adsorption and absorption is that adsorption is the attraction between the outer surface of a solid particle and a contaminant, whereas absorption is the uptake of the contaminant into the physical structure of the solid.

This figure shows the primary differences between intraparticle absorption versus surface adsorption. The main difference being that some contaminant particles are attracted to the outer surface of the soil particle, while another has been actually incorporated into the particle's structure.

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12y ago
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10y ago

Absorption is a process, e.g. electron promoted from lower energy level to higher energy level.

Absorbance is the value (magnitude) of the absorption process.

In spectroscopy, Absorbance= Optical density= log (I0/It)

Where, I0 and It are the intensity of incident and transmitted radiation respectively.

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10y ago

Evaporation is when you boil a solution and the solvent vaporises, leaving you with only the solute. Distillation is when you evaporate the solution and you then proceed to get it back by condensing it.

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13y ago

In general: Distillation separate 2 substance base on boiling point and absorption separation is base on differ of solubility or bonding strength cause mass transfer separation of substance to different phase.

The absorption is a wide process varies from scrubbing (solubility), ion exchange resin (bonding strength) or molecular cage like zeolite.

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10y ago

Attenuation refers to any reduction in intensity including both scattering and absorption.

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11y ago

Absorbtion is the misspelling of the word Absorption.

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11y ago

there,s nothing different

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Q: What the difference between absorption and attenuation?
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