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Showing posts with label sustanable tech. Show all posts
Showing posts with label sustanable tech. Show all posts

Friday, October 21, 2011

How to use banana peel to purify water

Recent study be a team of scientists from Brazil demonstrated the possibility of using banana peels to treat water contaminated by copper, lead and other heavy metal ions.Other natural waste materials such as sugar cane bagasse (the fibrous material left over after sugar cane has been crushed), peanut shells and apple waste could also be used as alternative materials in the treatment process. The principle is based on the affinity of the banana  contents towards retaining heavy metal ions.
More reading....

Banana Peel Applied to the Solid Phase Extraction of Copper and Lead from River Water

Thursday, October 13, 2011

10 new Innovative technologies for developing countries


1. E-Smart Device for Rural Education 
 This innovation tries to reduce illiteracy by using a smart device that is embedded with applications to teach them the basics of education like addition, subtraction, multiplication, etc. More

2. Energy Recovering Stove

Using TEG (ThermoElectric Generators) the radiation heat loss for thermal energy sources is recovered. For instance, the heat passing through the TEG can be used to boil water which is further passed through a radiator producing heat and distilled water. More
  
3. Air Heat with Solar Energy

The new approach in this system is by vacuum evaporation of water, the latent heat of vaporization of water comes from the atmosphere. The vapor is heated further in solar collectors whose size is now reduced because of the vacuum evaporation. This contributes to efficiency and reduced costs. More

4. A Self-sustaining Mosquito Larvae Killer 

The innovation here is to kill mosquito larvae at the source; in the water where they live. Using a