Tag Archives: Toxic Waste

New Solar Tech: Less Waste; Lower Cost.

Waste Equals Cost. Less Waste Equals Equals Lower Costs.

1366 Technologies - Standard 4-step, high waste process versus 1366 Direct Wafer process

Standard process versus 1366 Direct Wafer process

 

 

People frequently ask me about waste in Solar PV. Clearly, given that no fuel is consumed, no waste is produced from the use of a solar energy system to generate electricity. PV solar modules are not flammable (below something like around 1,000o C) so even if the building burns down under the modules – which could produce toxics – there is no waste from the solar energy system.

However, there is a carbon footprint in transport and installation, and there is waste associated with the production of solar modules. This is about to be reduced. Continue reading →

Solar Power and Toxic Waste

Ground-mounted solar array in a field of wildflowers

Ground-mounted solar array in a field of wildflowers. Copyright iphotostock.com

If you think there are zero direct emissions from the production of electricity from PV solar modules, YOU’RE ABSOLUTELY CORRECT. There are however, indirect emissions associated with production, transport, installation and refresh / recycle are dependent on the technologies used in those processes. Most are associated with the use of fossil fuels and nuclear power to manufacture and move solar modules.

Three observations stand out David Biello’s article, “Dark Side of Solar Cells Brightens,” Scientific American, Feb. 2008.

  1. Indirect emissions are derived from the fossil fuels used to generate the electricity for PV manufacturing facilities.
  2. Heavy metals, such as cadmium, used to manufacture PV solar modules, can be recovered from mining wastes and coal ash.
  3. Overall toxic emissions are 90 to 300 times lower than those from coal power plants.

Continue reading →

Want Some Mercury With That Slice?

How’s about some arsenic? Whadda ya mean “toxic?” You got a problem wid my pizza pie?

PizzaCheck out the Slice web-site at Serious Eats. Their Coal-Oven Pizzeria map shows about 20 coal-oven pizzerias in the New York City metropolitan area. While a coal fire may produce a perfect heat for baking pizzas, coal fires also produce mercury, arsenic, uranium, thorium, and other toxic heavy metals.

YUM!

No Thank You.

Does one drink red or white wine with mercury, arsenic, uranium, thorium, cadmium, aluminum, sulfur and all those toxins?

In the Mines

In the Mines

Coal. One of the most impure of fuels. A mixture of carbon, with impurities including uranium, thorium, aluminum, iron mercury, arsenic, sulfur, and methane.  Carcinogenic, mutagenic, explosive.  But it burns great. A magic rock.  Just like Pandora’s mythical box.