Easing concerns about pollution from manufacture of solar cells

Feb 25, 2008

In a finding that could help ease concerns about the potential environmental impact of manufacturing solar cells, scientists report that the manufacture of solar cells produces far fewer air pollutants than conventional fossil fuel technologies. Their report, the first comprehensive study on the pollutants produced during the manufacture of solar cells, is scheduled for the March 15 issue of the ACS' Environmental Science & Technology.

Solar energy has been touted for years as a safer, cleaner alternative to burning fossil fuels to meet rising energy demands.

However, environmentalists and others are increasingly concerned about the potential negative impact of solar cell (photovoltaic) technology. Manufacture of photovoltaic cells requires potentially toxic metals such as lead, mercury and cadmium and produces carbon dioxide, which contributes to global warming.

In the new study, Vasilis M. Fthenakis and colleagues gathered air pollution emissions data from 13 solar cell manufacturers in Europe and the United States from 2004-2006. The solar cells include four major commercial types: multicrystalline silicon, monocrystalline silicon, ribbon silicon, and thin-film cadmium telluride.

The researchers found that producing electricity from solar cells reduces air pollutants by about 90 percent in comparison to using conventional fossil fuel technologies.

Source: ACS

Explore further: Drought may take toll on Congo rainforest, study finds

add to favorites email to friend print save as pdf

Related Stories

Making graphene in your kitchen

Apr 20, 2014

Graphene has been touted as a wonder material—the world's thinnest substance, but super-strong. Now scientists say it is so easy to make you could produce some in your kitchen.

Making 'bucky-balls' in spin-out's sights

Apr 16, 2014

(Phys.org) —A new Oxford spin-out firm is targeting the difficult challenge of manufacturing fullerenes, known as 'bucky-balls' because of their spherical shape, a type of carbon nanomaterial which, like ...

Recommended for you

Drought may take toll on Congo rainforest, study finds

3 hours ago

(Phys.org) —A new analysis of NASA satellite data shows Africa's Congo rainforest, the second-largest tropical rainforest in the world, has undergone a large-scale decline in greenness over the past decade.

User comments : 2

Adjust slider to filter visible comments by rank

Display comments: newest first

Doug_Huffman
not rated yet Feb 25, 2008
Ahh, there are pollutants other than in air. I would not expect to find Pb, Hg, Cd in air at all.

Dilution is the solution to pollution. Each of these is derived from a dilute natural source, return them whence they cam.
Valentiinro
not rated yet Feb 26, 2008
If people were especially concerned about this it probably wouldn't be too hard to develop capturing technologies for these pollutants anyway. Much like the carbon capture ideas for coal power plants.

More news stories