Can a solar still be built using recycled materials?

Materials Needed

To build a solar still using recycled materials, you will need a few basic items. A large, shallow container such as a plastic tub or bucket can serve as the base of the still. A smaller container or a plastic plate will be needed for the collection of water. Old CDs or plastic sheets can be used to create a wick or a condensation surface. A rock or a metal weight can be used to hold the small container in place.

Step-by-Step Construction

To construct the solar still, start by placing the large container in a shaded area. Add a layer of small rocks or gravel to the bottom of the container. Place a small container or a plastic plate in the center of the large container. Place a few rocks or a metal weight on top of the small container to hold it in place. Place a layer of sand or small rocks over the small container. Add water to the center of the still. Use old CDs or plastic sheets to create a wick or a condensation surface. Place the wick or condensation surface on top of the still. Place a clear plastic sheet or a plastic bag over the top of the still. Weigh down the edges of the plastic sheet with rocks. Use a rock or a stick to create a depression in the center of the plastic sheet. Place the still in direct sunlight and wait for the water to evaporate and condense on the underside of the plastic sheet.

Tips and Variations

One variation of the solar still is to use a plastic bottle as the collection container. Cut the bottom off of the bottle and invert it into the larger container. This will create a more efficient collection system. Another variation is to use a piece of plastic sheeting to create a greenhouse effect around the still. This will help to trap heat and increase the rate of evaporation.