Is charcoal better than sand for water purification?

Characteristics of Charcoal

Charcoal is an effective medium for water purification due to its high surface area and ability to attract and retain impurities. One gram of activated charcoal can contain a surface area of up to 2,000 square meters, allowing it to absorb and remove impurities efficiently. Compare this to sand, which can only remove larger particles and sediment.

Techniques for Using Charcoal

To effectively use charcoal for water purification, it is recommended to use 100-200 grams of activated charcoal per 10 liters of water. This amount can be adjusted based on the level of contamination and the desired level of purity. It’s also essential to ensure that the charcoal is activated, as regular charcoal may not be as effective.

Comparison to Sand

Using sand for water purification is less effective than charcoal due to its inability to remove dissolved impurities and contaminants. Sand can filter out larger particles and sediment, but it may not be effective in removing bacteria, viruses, and other microorganisms that can cause waterborne illnesses. Activated charcoal, on the other hand, can remove up to 99% of impurities and contaminants, making it a more reliable choice for water purification.