46 Environmental Manager How a Waste Treatment Plan Can Improve Your Bottom Line Although waste is unavoidable in industrial processes, many companies are turning toward business strategies that seek to treat waste with minimal environmental impact - or even better, prevent waste altogether 50 Engineering Practice Selecting the Right Thermodynamic Models for Process Simulation Software that enables complex processes to be simulated continues to evolve for a wide range of thermodynamic conditions. Selection of the most appropriate models plays a crucial role in adequately representing real-life conditions 24 Equipment and Services 24 Focus on Valves Safe combustible-dust-explosion isolation; More control for this electric valve actuator; This diaphragm valve touts reduced maintenance; NSF lead-free valve family for commercial water applications; This ball valve now has a stemposition indicator disc; and more 29 29 New Products See filter status in real time with this software solution; This power supply has a new IO-Link Communication Module; Decentralized field unit for measuring water parameters; A new volumetric feeder for additive dispensing systems; New technology enables biogas optimization; and more Departments 3 Editor's Page Pursuing the potential of hydrogen A recent surge of projects is aimed at realizing the potential of hydrogen as a " clean " fuel that supports global climate-related goals 152 Economic Indicators Advertisers 56 2020 Chemical Engineering Buyer's Guide 149 Classified 150 Subscription and Sales Representative Information 151 Ad Index Chemical Connections Follow @ChemEngMag on Twitter Join the Chemical Engineering Magazine LinkedIn Group Visit us on www.chemengonline.com for more articles, Latest News, Webinars, Test your Knowledge Quizzes, Bookshelf and more Coming in January Look for: Feature Reports on Sampling for Process Analytics; and Evaporators; A Focus on Motors & Drives; A Facts at your Fingertips on Air-Pollution Control; News Articles on the Kirkpatrick Chemical Engineering Achievement Award; and Particle-Size Control; New Products; and much more Cover design: Rob Hudgins 2 CHEMICAL ENGINEERING WWW.CHEMENGONLINE.COM DECEMBER 2019http://www.chemengonline.com http://WWW.CHEMENGONLINE.COM