Monthly Archives: October 2012

What is Activated Charcoal, used in Filters?

Charcoal is carbon. Activated charcoal is charcoal that has been treated with oxygen to open up millions of tiny pores between the carbon atoms. The use of special manufacturing techniques results in highly porous charcoals that have surface areas of 300-2,000 square metres per gram. These so-called active, or activated, charcoals are widely used to Continue Reading

Coal Mine Strikes

With no end in sight and the continuation of unprotected strikes spreading across South Africa, the effect on domestic growth for the third quarter will be adverse and also affect the output in 2013. Gross domestic product rose by an annualised rate of 2.7% during the third quarter and 3.2% in the second. But, depending Continue Reading

Renewable Energy

In efforts to supplement fossil fuels, renewable energy—geothermal, wind, and solar—has been the chief beneficiary in much of the world. Most bets for renewable power focus on wind.  But two major constraints still prevent wind from achieving the means of substantially reducing the combustion of coal.  The first is financial: wind, like most renewable energy Continue Reading