www.chemengonline.com June 2020 Cover Story 26 Part 1 Gas Handling: Process Control for Compressible Flow Controlling flow in gas-handling applications can present challenges because of the fluids' compressibility. This article presents an overview of how compressible gases behave in response to interacting variables 32 Part 2 Rare Noble Gases: Production and Use of Ne, Kr and Xe Rare noble gases neon, krypton and xenon have unique properties and can be obtained from air, but the economics of isolating them at air-separation units depend on demand and pricing. This article provides information on their production and use In the News 7 Chementator This self-sustaining cell makes electrolysis more practical; Thermal energy-storage system using phase-change materials; Filtering out and detoxifying Cr(VI) from water; New process for safer and continuous magnesium production to be piloted; A new tracemoisture analyzer harnesses the power of MOFs; and more 12 Business News Ineos Styrolution donates ABS for safety-glasses production; Sinopec starts up 16th fabric line supporting face-mask production; Arkema manufactures hand sanitizer in New York; Evonik commissions biomaterials production facility in Birmingham; and more 14 Newsfront Adaptability Helps Flow Instrumentation Evolve A common adage says " if you can't measure it, you can't control it. " Now, advances in flow-measurement technologies are increasing the breadth of what it is possible to measure Technical and Practical 24 Facts at your Fingertips Water Treatment: IonExchange Resins This one-page reference provides information on how ion-exchange resins work in treating water in industrial settings 25 Technology Profile Production of Orthophthalic Unsaturated Polyester This column outlines a production process for orthophthalic unsaturated polyester resin, monomers that are used in copolymerizations of thermosetting plastics 38 Feature Report Part 1 Modular Process Design: Chemical and Thermal Recycling of Acids In order to recycle spent acids from different applications, a design approach based on different process modules gives operators the flexibility needed to handle different contaminants ChemiCal engineering www.Chemengonline.Com June 2020 1 38 14 7 26 Volume 127 | no. 6http://www.chemengonline.com http://www.Chemengonline.Com