Answer to Question #121994 in General Chemistry for ohaniso

Question

1. Discuss the effect of the amounts of flocculant on the flocculation process.

2. Select a suitable amount of flocculant for harvesting the milk protein.

3. How can vinegar be a flocculant? Discuss the principle behind this.

Answer 1

Solution.

1.

When the amount of flocculant is fixed and small flakes are formed, it can quickly catch nets under gravity and sweep colloidal particles in the water to produce precipitation and separation, which is called a roll sweep or net catch. This effect is basically a mechanical effect, and the amount of flocculation required is inversely proportional to the amount of impurities in the raw water. When the content of raw hydrocolloids is low, the required flocculation dose is high, and Vice versa.

2.

The amount of flocculant for collecting milk protein is inversely proportional to the content of milk protein in the product.

3.

In a stable equilibrium state, contamination particles are present in the liquid phase without colliding or interacting with each other in any way. Adding flocculant leads to a violation of this equilibrium-the particles under the action of the charge begin to collide with each other and attract to the flocculant molecules, forming floccules. Acetic acid, as a flocculant, increases the action of hydrogen bonds due to the acetate anion. This occurs due to the additional interaction of the acetate ion with cations located on the surface of pollution particles that have a positive charge with the formation of an additional chemical bond.

Answer:

1.

When the amount of flocculant is fixed and small flakes are formed, it can quickly catch nets under gravity and sweep colloidal particles in the water to produce precipitation and separation, which is called a roll sweep or net catch. This effect is basically a mechanical effect, and the amount of flocculation required is inversely proportional to the amount of impurities in the raw water. When the content of raw hydrocolloids is low, the required flocculation dose is high, and Vice versa.

2.

The amount of flocculant for collecting milk protein is inversely proportional to the content of milk protein in the product.

3.

In a stable equilibrium state, contamination particles are present in the liquid phase without colliding or interacting with each other in any way. Adding flocculant leads to a violation of this equilibrium-the particles under the action of the charge begin to collide with each other and attract to the flocculant molecules, forming floccules. Acetic acid, as a flocculant, increases the action of hydrogen bonds due to the acetate anion. This occurs due to the additional interaction of the acetate ion with cations located on the surface of pollution particles that have a positive charge with the formation of an additional chemical bond.