Furthermore, another significant difference between flocculation and deflocculation is that flocculation decreases the viscosity of a suspension, whereas deflocculation increases the viscosity of a suspension. As a result, the rate of sedimentation in a flocculated suspension is higher than the rate of sedimentation in a deflocculated suspension.
What are flocculated and deflocculated suspensions?
Suspensions can be divided into two groups as flocculated suspensions and deflocculated suspensions based on electro-kinetic nature of solid particles that are suspended in the suspension. In chemistry, flocculation is the process in which colloids in a suspension can be obtained in an aggregated form.
Why is the rate of sedimentation slow in deflocculated suspensions?
In a deflocculated suspension, collide particles act as individual particles, and there are no flocs or aggregates. Here, the rate of sedimentation is slow because smaller particles rather than large clusters of particles are involved in settling.
What is the difference between flocculation and deflocculation?
The key difference between flocculation and deflocculation is that flocculation is the formation of flocs by the clumping of fine particles, whereas deflocculation is the dispersion of flocs to form a stable colloid. Flocculation refers to the formation of clumps from fine particles in a colloid. These clumps are called flocs.
What is the difference between flocculation and sedimentation?
Flocculation is the process in which colloids in a suspension can be obtained in an aggregated form. Therefore, a flocculated suspension is composed of large aggregates and this type of suspension will lead to a rapid rate of sedimentation. Sedimentation is the settling down of aggregates or particles of suspension to the bottom of the liquid.
Which suspension is good flocculated or Deflocculated?
INTRODUCTIONFlocculated suspensionDeflocculated suspensionSediment is loosely packed and does not form a hard cake.Sediment is tightly packed and forms a hard cake.The supernatant is clear.The supernatant is hazy.Floccules stick to the sides of the bottle.Particles do not stick to the sides of the bottle.4 more rows
Is flocculated suspension more stable?
Flocculants Form Easily When Shaken into Loose Flocculants Although flocculated particles settle more quickly than discrete ones, they form a lattice that resists complete settling. As a result, cake formation and compaction are less likely.
Which type of suspension is more stable?
Suspension is more stable. This is because suspension does not mix with each other. The denser particles settle down at the bottom and makes the solution stable.
Which type of suspensions have greater bioavailability?
Conclusions: This study has shown that the new atovaquone oral suspension also has significantly greater bioavailability when administered after food or a nutrition supplement that has a moderate fat content.
Why flocculation is important in suspension?
Coagulation and flocculation are important processes in water treatment with coagulation aimed to destabilize and aggregate particles through chemical interactions between the coagulant and colloids, and flocculation to sediment the destabilized particles by causing their aggregation into floc.
Why sedimentation rate of flocculated suspension is faster than Deflocculated suspension?
Floccules can sediment faster than smaller particles under the effect of gravity. The sediment formed in a flocculated suspension is larger than expected because the floccules have a loose structure with pores and these pores can entrap liquid. Therefore the volume of the final sediment is larger than expected.
Which suspension has more void?
Answer. Hence, flocculated suspensions sediment more rapidly.
What are the qualities of good suspension?
1 It should settle slowly and should be readily re-dispersed on gentle shaking of the container. 2 The particle size of the suspension remains fairly constant throughout its long period of undisturbed standing . 3 The suspension should pour readily and evenly from its container.
Which one of the following solution is most stable?
Option (C) is correct answer Suspension is most stable.
Which route shows the highest bioavailability?
The route by which the medicines are directly introduced into the bloodstream through a vein is known as intravenous route of administration. The intravenous route is considered to be the fastest route of drug administration. The injections and the infusions are administered by this route have 100% bioavailability.
Which route of drug administration has maximum bioavailability?
Route of administration Drugs given by intravenous route have 100% bioavailability.
Which form of the drug has the highest bioavailability?
Which form of the drug has the highest bioavailability? Explanation: Solutions are readily available. Thus having the highest bioavailability.
What is the difference between flocculated and deflocculated suspension?
The main difference between flocculated and deflocculated suspension is that the rate of sedimentation in a flocculated suspension is rapid whereas the rate of sedimentation in a deflocculated suspension is slow. Click to see full answer.
What is the degree of flocculation?
The degree of flocculation can be defined mathematically as the number of particles in a system before flocculation divided by the number of particles (flocs) after flocculation.
What is the difference between flocculated and deflocculated suspensions?
1. The particles of dispersed phase aggregate and form a loose networklike structure. The particles of the dispersed phase remain as separate entities. 2.
What determines if a suspension is flocculated or deflocculated?
Whether a suspension is flocculated or deflocculated depends on the relative magnitudes of the electrostatic forces of repulsion and the forces of attraction between the particles.
Why is the interparticle interaction in compact sediments relatively high?
The interparticle interaction in such compact sediments is relatively high because the interparticle distances are small, leading to the undesirable phenomenon of caking , a tightly packed sediment that was almost impossible to resuspend even with vigorous shaking.
Why are aggregates redispersible?
In this suspension type, the structure of the aggregates is quite rigid; hence they settle quickly to form a high sediment height and are easily redispersible because the particles constituting individual aggregates are sufficiently far apart from one another to preclude caking.
What is the name of the suspension of particles?
Such a suspension is called flocculated suspension.
What is the repulsive barrier?
A repulsive barrier termed the primary maximum, separates the secondary minimum from the primary minimum. The magnitude of the repulsive forces at the primary maximum determines whether a flocculated system will remain flocculated.
What is the term for the formation of a loose aggregation of discrete particles held together in a?
Flocculation refers to the formation of a loose aggregation of discrete particles held together in a network like structure by physical adsorption of macromolecules when the longer-range van der Walls forces of attraction exceed the shorter-range forces of repulsion.
What is the opposite of flocculation?
These clumps are called flocs. We mainly use this term regarding suspensions. Deflocculation, on the other hand, is the opposite of flocculation.
What is flocculation in chemistry?
Flocculation is the formation of clumps by the aggregation of fine particles in a suspension. These clumps are called flocs or flakes. Flocculation may occur spontaneously or due to the addition of a clarifying agent. However, this floc formation is different from precipitation. It is because, in precipitation, dissolved components form a solid while in flocculation, undissolved components form a solid.
What is floc dispersion?
Deflocculation is the dispersion of flocs in a suspension. Deflocculants can make this happen by increasing zeta potential (the potential difference existing between the surface of a solid particle immersed in a conducting liquid (e.g. water) and the bulk of the liquid) and the repulsive forces between particles.
What is flocculated suspension?
A flocculated suspension is a suspension in which particles of the suspension has undergone flocculation. A flocculated suspension is composed of large aggregates (flocks) and this type of suspension will lead to a rapid rate of sedimentation.
What is a suspension in medical terms?
Suspensions are a class of dispersed systems (Heterogenous systems) in which a finely divided solid is dispersed uniformly in a liquid dispersion medium. or A pharmaceutical suspension may be defined as a coarse dispersion of biphasic liquid dosage form containing finely divided insoluble material suspended in a liquid medium.
What are the two groups of suspensions?
Suspensions can be divided into two groups as flocculated suspensions and deflocculated suspensions based on the electro-kinetic nature of solid particles that are suspended in the suspension.
Why is suspension used in parentral application?
Suspension can be formulated for parentral application in order to control rate of drug absorption.E .g. penicillin procaine
What is the purpose of oxy tetracycline suspension?
To prevent degradation of drug or to improve stability of drug; E.g. Oxy tetracycline suspension
What is a pharmaceutical suspension?
A pharmaceutical suspension is a coarse dispersion in which the internal phase (the active ingredient) is placed/distributed uniformly throughout the external phase/continuous phase.
Where is suspension given?
Suspension dosage forms are given by the oral route, injected intramuscularly or subcutaneously, instilled intranasally, inhaled into the lungs, applied to the skin as topical preparations, or used for ophthalmic or otic purposes in the eye or ear, respectively.
