Whether you are an expert in water purification or not, having access to the Diffusion and Osmosis Worksheet answers many questions about both. There are three basic methods of purifying water: distillation, reverse osmosis, and filtration. Distillation and reverse osmosis remove contaminants like volatile organic compounds, ionic compounds, chemicals, and heavy metals. Filters help with these situations, as well as removing sediment.
Both chemicals and corrosive materials move through glass fibers. The idea behind distillation is that the materials concentrate in a small area and then evaporate, while porous media like glass or ceramic causes the materials to flow through the media and soak into the pores. Water that moves through a porous material takes in materials dissolved in the medium. The salts then move through the media and combine with other chemicals. This mixture causes the water to change into steam, just like steam does when it comes out of a boiling pot.
A distillation apparatus can be built from copper and other substances that have high conductivity but are not too reactive. Condensates are basically useless in the water treatment process. They are just soapy and leave behind deposits that do nothing for you to cause some health problems.
Osmosis is where chemicals are pushed through tiny spaces in the container. In this case, there is nothing broken down because the compounds stay within the pores. It is one of the most effective ways of removing materials that are inorganic, which include contaminants like herbicides and insecticides. There is no need for removing the waste products from the medium. But, it is less effective at removing heavy metals, as they tend to go through a membrane first, and it can remove the mineral content of the medium.
Osmosis also doesn’t affect the minerals because the molecules are larger than water molecules. This makes the metals dissolved, so the majority of the components remain dissolved. The minerals then come back to the surface of the water. It is much like a sponge, allowing minerals to settle on the sides of the vessel, creating the mineral content.
Reverse osmosis removes water by forcing the water through a semi-permeable membrane. Here, the water is left undisturbed, allowing it to simply sit on the outside. It is then brought into a tank where it is filtered and sent back to its original source. As long as there is no chemical or impurities in the water, there is no need for a filter. In fact, the process reduces the chemical content of the water by leaving the minerals behind, as there is no need to filter out the minerals.
The water treatment industry tries to apply all of these methods, as well as other technologies, to provide the cleanest water possible. The most effective way to purify water is with reverse osmosis. However, with today’s advances in technology, it can be used for other purposes besides the purification of water. For example, it can be used to clean drinking water reservoirs, making them more efficient. It can also be used in industries to treat wastewater.
Osmosis worksheet answers many questions about these three common methods of water purification. There are many other techniques, such as carbon and ceramic filters, and other impurities and minerals can still be removed through other methods, like biological filtration and electrolysis.