Have you ever been on a hike or a camping trip and nearly died of thirst because you have run out of fresh drinking water and the water in the river or dam is not fit for human consumption? Ever wished you knew how to filter the water so that you could just slake your thirst?

How to Filter 99% of Bacteria Out Of Your Drinking Water in Nature

Fear not, there is a very simple solution to filter water so that you can get water that is pure enough for you to drink and slake your thirst, and it involves just five easy steps:

1. Find a pine tree;

2. Break off a young branch;

3. Peel away the bark;

4. Put the stick in the mouth of a bottle; and

5. Slowly pour the water through the stick

This simple improvised water filter will trap 99% of the bacteria in the water, providing you with fresh uncontaminated drinking water. According to an MIT team, this type of low-tech filtration system is capable of producing around four litres of drinking water per day.

According to a paper published in the journal PLoS ONE, this type of filter can filter out in excess of 99% of the bacteria E. coli due to the size of the pores in the sapwood (the youngest wood of a tree which serves to move water up from the roots).

According to co-author, Rohit Karnik, an associate professor of mechanical engineering at MIT, sapwood is an efficient, low-cost, and very promising type of water filter, especially for rural communities where modern water filtration methods and systems are not easily accessible.

Sapwood is comprised of xylem, a porous tissue that carries sap from a tree’s roots to crown via a system of pores and vessels. Plants have worked out a system whereby they can filter out bubbles but still allow an easy flow of sap; this is akin to filtering out microbes but maintaining a high water flow rate, which is why this tree branch works so well as a water filter.

Source:

www.oregonherald .com/bnews/story.htm?id=869

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