Activated carbon is a form of carbon that has treated in order to give it small pores, with lower volume, this increases the surface area accessible for adsorption. Adsorption is a procedure where solids are used for taking a soluble contaminate out of water. In this procedure active carbon is the solid that has been mentioned. The reason activated carbon is such a good filter is because of the huge surface area (between 300-2000m2/g), this is because surface area is proportional to adsorption capacity. Several factors can have an effect on activated carbon one factor includes temperature when the temperature increases the adsorption capacity decreases. Pour size is very important in activated carbon the pours have substantial adsorption forces
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One such way of removing caffeine includes distillation, distillation is possible between the two as they have a distance of over 50 degrees Celsius in boiling points. Water has a boiling point of 100 degrees Celsius and caffeine has a boiling point of 178 degrees Celsius. This means if the solution is heated to 100 degrees the water will begin to evaporate but the caffeine will not. The water vapours can then undergo condensation leaving pure water without the contaminate present. This process however can be time consuming and costly also requiring a constant heat source for prolonged periods. Reverse osmosis is capable to remove caffeine from the water this because the caffeine is a larger molecule than the water is so the water can pass through the semipermeable membrane. Tha caffeine molecule cannot pass through the semipermeable membrane as it is too big to fit through any of the pores in the membrane. The water will pass through the semipermeable membrane only leaving water behind. However reverse osmosis tends to waste a large amount of water.
Active transport can also be used to remove caffeine from water this is because activated carbon uses London dispersion forces in order to bond to the caffeine molecule. Active carbon does have its drawback just like the others as it can often be expensive and sometimes it does not stop all contaminates from pass
One such way of removing caffeine includes distillation, distillation is possible between the two as they have a distance of over 50 degrees Celsius in boiling points. Water has a boiling point of 100 degrees Celsius and caffeine has a boiling point of 178 degrees Celsius. This means if the solution is heated to 100 degrees the water will begin to evaporate but the caffeine will not. The water vapours can then undergo condensation leaving pure water without the contaminate present. This process however can be time consuming and costly also requiring a constant heat source for prolonged periods. Reverse osmosis is capable to remove caffeine from the water this because the caffeine is a larger molecule than the water is so the water can pass through the semipermeable membrane. Tha caffeine molecule cannot pass through the semipermeable membrane as it is too big to fit through any of the pores in the membrane. The water will pass through the semipermeable membrane only leaving water behind. However reverse osmosis tends to waste a large amount of water.
Active transport can also be used to remove caffeine from water this is because activated carbon uses London dispersion forces in order to bond to the caffeine molecule. Active carbon does have its drawback just like the others as it can often be expensive and sometimes it does not stop all contaminates from pass