High Temperature Chlorination Solar Panel Recylcing

Recycling of copper indium gallium diselenide cigs solar cell materials is important to ensure future supply of indium and gallium.

High temperature chlorination solar panel recylcing.

In the proposed chlorination process the residue obtained after the separation of selenium is introduced into a furnace at the required reaction temperatures which are 260 and 340 c for gallium and indium respectively. During the sustainable materials management smm webinar shining the light on solar panel recycling. The international renewable energy agency estimated that there were about 250 000 metric tons of solar panel waste in the world at the end of 2016 and that the figure could reach 78 million metric tons by 2050. From a regulatory aspect pv panel waste still falls under the general waste classification.

The solar panel testing parameters are defined as follows. As no one is offering to pay for old solar panels or even take them off people s hands for free we can be pretty sure no one has worked out how to do this. Trichlorosilane is then heated to a much higher temperature 1150 degrees c 2102 degrees f at which point it decomposes. Most efforts related to solar panel recycling concentrate on si panels and aim to recover and recycle the most important parts.

This comes to a total of 8 15 per panel. Irradiance of 500w m 15 c module temperature zero wind speed and air mass am of 1 5. Recycling solar cells cigs pyrometallurgy hydrometallurgy. Solar photovoltaic panels whose operating life is 20 to 30 years lose productivity over time.

However electrochemical separation and was determined to be the promising separation method for future process development. Another is hydrochloric acid which is recycled back into the process. As stated above there are presently three different types of recycling process applied to solar pv panels which are physical thermal and chemical as illustrated in fig. The lifespan of high quality pv panels may even reach 30 to 40 years and be still functional afterwards though with decreasing efficacy.

5 so to be financially worthwhile the total cost of recycling a stripped solar panel would have to be less than roughly 8. The lifespan of solar panels may thus be much longer than officially stated. Solar panels contain lead cadmium and other toxic chemicals that cannot be removed. By 2050 the united states is expected to have the second largest amount of end of life solar panels after china.

In contrast to high temperature conditions htc testing the low temperature conditions ltc test the performance of solar panels under low irradiance and temperature levels. One of the products of its decomposition is very pure silicon. Industry experts who have been following developments of end of life solar panel management recently provided an update on solar panel recycling in the u s. Download high res image 352kb.

High temperature chlorination and solvent extraction was also tested for separation of copper indium and gallium.