www.che.com August 2014 Volume 121, no. 8 Cover Story 40 Cover Story New Horizons for Dividing Wall Columns How to significantly expand the application window of DWCs, both as a new design to enhance potential benefits and as an energy-saving retrofit option NewS 11 Chementator A sorbent that enhances the water-gas shift reaction; A heavy-metal recovery technique that produces no waste streams or sludge; This chloride leaching process recycles resources; Cobalt: a less expensive and more efficient catalyst than rhodium; and more 17 Newsfront Spotlight on Lithium Lithium producers are developing process technology to supply the anticipated growing demand 22 Newsfront Software for the Human Element New software makes plant personnel more effective by providing quality, actionable information eNgiNeeriNg 32 Facts at Your Fingertips Activated Carbon This one-page reference provides manufacturing and application information on the most widely used industrial sorbent material - activated carbon 33 Technology Profile Extracting 1,3-butadiene from a C4 Stream This one-page profile describes a process for recovering 1,3-butadiene from a stream of mixed C4 compounds 34 Feature Report Advanced Control Methods for Combustion Advanced control techniques can raise efficiency and lower pollutant emissions in industrial combustion. The capabilities and adoption of several methods are discussed 49 Engineering Practice Distillation Column Thermal Optimization: Employing Simulation Software Applying process simulation software in distillationcolumn design and operational analysis can lead to significant reductions in operational and maintenance costs and improved column performance 40 22 17 34 ChemiCal engineering www.Che.Com august 2014 1http://www.che.com http://www.Che.Com