Michael J. K. Pope, Süd-Chemie Inc., Needham, Mass.

Getting particular with particulates

Despite the growing popularity of natural gas, diesel remains the fuel of choice for many engine generating-set specifiers and operators. But pollutants resulting from diesel-fuel combustion are attracting increasing regulatory attention. In fact, between 2012 and 2014, allowable emissions of one of these pollutants—particulate matter—will be reduced by 90%.