http://www.che.com Chemical Engineering en-us 2013 Sun, 26 May 2013 5:35:07 EDT The first commercial application of a newly developed process for the treatment of oxides of nitrogen (NOx) waste gas has been established at a milling operation in Los Angeles, Calif. Developed by Pacific Rim Design and Development (PRDD; Reno, Nev.; prdd.net), along with DuPont (Wilmington, Del.... http://www.che.com/chementator/air_pollution_control/10451.html Wed, 1 May 2013 0:00:00 EDT A new process for removing oxides of nitrogen (NOx) from industrial foul-air and cool combustion exhaust uses ClO2 in a unique way to remove over 99% of both NO and NO2 with a single scrubbing stage. The reaction vessel is considerably smaller than those required by conventional wet-chemistry NOx removal... http://www.che.com/chementator/air_pollution_control/9373.html Fri, 1 Jun 2012 0:00:00 EDT Almost by definition, chemical engineering is a “green” discipline today, as it so often involves efforts to optimize chemical processes in order to reduce the amount of energy and raw materials that are used and the amount of waste that is generated. Today everybody “talks green” but... http://www.che.com/chementator/air_pollution_control/8298.html Mon, 1 Aug 2011 0:00:00 EDT Sulfur dioxide emissions from metals smelters and other process plants are typically treated by converting the SO2 to sulfuric acid, but this may not be convenient, because of the shipping cost for plants located far from an acid market. WorleyParsons (Monrovia, Calif.; www.worleyparsons.com) offers a... http://www.che.com/chementator/air_pollution_control/8172.html Fri, 1 Jul 2011 0:00:00 EDT A system that utilizes existing biological wastewater-treatment facilities for destruction of biodegradable volatile organic compounds (VOCs) and other organic hazardous air pollutants (HAPs) has been demonstrated at three U.S. petroleum-refining and chemical facilities, and the developer has plans to extend... http://www.che.com/chementator/air_pollution_control/8096.html Wed, 1 Jun 2011 0:00:00 EDT Improvements in the design of ethylene oxide (EtO) scrubbers made by The Clean Air Group, Croll Reynolds Co. (Parsippany, N.J.; www.croll.com) have helped users meet increasingly stringent regulations for EtO emissions, as well as meet tower height restrictions. “Our designs have achieved efficiencies... http://www.che.com/chementator/air_pollution_control/6424.html Tue, 1 Mar 2011 0:00:00 EST