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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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How Attenuation measured?
RMS Output divided by input, usually expressed in deciBells. Depends on whether it is power or voltage being attenuated. Voltage, it's 20log(Vout/Vin) Power, it's 10log(Pout/Pin) The difference is because power is proportional to voltage squared.
Is there any relationship between sound frequency and sound absorption?
Yes - the amount of absorption can depend on the frequency.
Explain light attenuation in the water column?
Light attenuation in the water column is the process by which light decreases in intensity as it travels through water due to absorption, scattering, and reflection by particles and dissolved substances. Absorption occurs when light is absorbed by water molecules, particles, and dissolved organic matter. Scattering happens when light is redirected in different directions by particles and molecules in the water. Reflection occurs when some light is bounced back from the water surface. Together, these processes result in reduced light penetration with increasing depth in the water column.
Where does attenuation occur?
Attenuation typically occurs in processes involving the weakening or reduction of a signal's strength, intensity, or energy. In communication systems, attenuation can happen in transmission lines, optical fibers, or wireless channels, leading to signal loss or degradation over distance. It is essential to account for attenuation to maintain signal quality and integrity in various applications.
One difference between algae and plants is that?
Algae lack specialized tissues like roots, stems, and leaves that are present in plants. Instead, algae have simple structures for attachment and nutrient absorption.
Difference between attenuation constant and phase constant?
nothing
Does attenuation happen when EM wave travels in space?
There is no attenuation due to absorption, but attenuation will occur due to divergence (spreading out) of the wave.
As em waves travel in space only one can happen... Reflection Attenuation absorption refraction.?
absorption
What are different attenuation factors in optical fiber?
There are three types of attenuation in fibe optics cable. 1). Bending Losses 2). Scattering 3). Absorption
What is the difference between attenuation and insertion loss?
In CATV system, insertion loss define as loss in directional coupler or TAP connector. typically 1 dBuv, while attenuation is generally describe as loss in transmission (splitter).
What are the difference between actual position and apparent position of the stick?
duhhh
What is the difference between absorption costing and active base costing?
there is have some differeance . 1.
Which frequencies would probably result in the greatest ultrasonic attenuation losses?
Higher frequencies, typically above 20 MHz, would result in the greatest ultrasonic attenuation losses in materials due to increased scattering and absorption.
Difference between absorption costing AND target costing?
Target costing is when you have a goal for the project and its costs. Absorption costing is when you need to fix the excess spending.
What is 'Quenching?
Color quenching is the attenuation of photons produced by a scintilator due to absorption and scattering. This effect, combined with the chemical quenching (attenuation of the transfer of energy from the solvent to the scintillator gives the total quenching effect of the scintillator/solvent mix.
What is the difference between RG11 and RG213 cable?
RG-11/U is 75ohm and is usually triple/quad shielded and typically has a maximum attenuation of 3.65. RG-213/U is common form amateur radion and is 50 ohms and is single shielded with about a 5.95 attenuation.
Which is refers to the loss of energy or weakening of a beam of a radiation as it passes through the matter attenuation or absorpion?
Absorption refers to the process in which a material absorbs and retains energy from a beam of radiation as it passes through it. Attenuation, on the other hand, refers to the overall reduction in the intensity of the radiation beam as it travels through a substance due to a combination of absorption and scattering.
