What is vacuum filtration?
Vacuum filtration is a separation method used to remove a solid from the liquid. In general, the solid is dissolved in a solution. The solution can be unsaturated, saturated or horny - the difference is the concentration of the solid in the liquid. The filter is used to separate the solid substance from the liquid and the vacuum pump is used to force the liquid by the filter. These are particles that were dissolved in water or in another solvent and then were heated or recrystallized by heating. The liquid evaporates in the process.
After evaporation, most of the liquid is stored on the filter paper, which is placed in the Buchner funnel. The funnel is connected to a filter flask that has a side opening, through which the air will be vacuumed using a rubber tube connected to the vacuum. If the tube is sucking on the other end of the tube, it is attached to the side arm of the filter flask. Once secured, the upper part of the suction filter flask should have.
When the sample is poured onto the filter paper, the vacuum stretches the solvent on the paper and stores it in the filter flask. The vacuum removes as much solvent as possible from the solid crystals. The remaining solids on the filter paper are then collected and considered.
Vacuum filtration is also used to separate solids from liquid solutions. Unsaturated solutions are solutions that can dissolve more solids. It is generally clear and has no suspended particles. Saturated solutions cannot dissolve any other solids, but are generally clear. SuperSat solutions are generally not clear and have suspended or sinking particles.
Solutions with suspended particles can be sealed with vacuum filtration. Solutions in which the solid is dissolved, such as unsaturated solutions, generally require a form of chemical treatment or heating before vacuum filtration may be effective. In general, saturated solutions cannot be separated by vacuum fiLtrace, but if the filter paper has sufficient pore size, several particles can be collected.
The amount of solid substance collected by vacuum filtration generally depends on the size of the filter paper pore. The smaller pore size will bring more material, while the larger pore size will bring less material. In general, the pore size of the filter paper is less than the micrometer diameter.