Like many buildings of its era, the 47-year-old CHA Flannery Senior Apartments were due for a mechanical retrofit in 2009 when Primera-Hill landed the big Chicago Housing Authority contract. Just one ...

The presence of unburned fuel in a power plant’s ash indicates an inefficient combustion process, as some of the energy in the fuel is being wasted. Unburned fuel also poses a risk to safety; if ...

Nitrogen Oxides (NOx) emissions are regulated not only because they are highly reactive gases, but also due to the fact they react with VOC and Sunlight to form ground level ozone and smog. The ...

The calcium carbonate (CaCO 3) in limestone is only slightly soluble in water, but in the presence of acid, it reacts much more vigorously. It is the acid generated by absorption of the SO 2 into the ...

Many utilities are under pressure to add flue gas desulfurization to their coal-fired units in response to more stringent air emissions regulations. There are a number of multi-pollutant compliance ...