www.chemengonline.com May 2022 Cover Story 31 Vent Away Condensate Pump Frustrations in a Flash The guidance provided here can help to mitigate problems occurring in pumping systems used for condensate recovery In the News 5 Chementator Applying capacitive deionization for critical metals recovery; Reduced fouling when pneumatically conveying lactose products; Catalyst-coated membrane reduces electrolyzer stack cost for H2 production; Commercial debut for a process that makes 'green' pig iron; Growing sulfur batteries from crystals; and more 10 Business News ADM announces significant expansions in the U.S. and Germany; Linde doubles capacity for liquefied gas products at La Porte facility; Encina to build advanced recycling plant in Pennsylvania; Air Products acquires Air Liquide assets in U.A.E and Bahrain; and more 31 12 Newsfront SAF Production Expands for a LowCarbon Future To lower their climate impact, petroleum refiners are increasingly assessing greenhouse-gas-emissions intensities as they consider processing lower-carbon feedstocks. One area of particular activity is sustainable aviation fuel (SAF), where demand growth is accelerating Technical and Practical 28 Facts at your Fingertips Physical Gas-Separation Methods This one-page reference provides information on some of the common methods of physical gas separation 29 Tower Doctor Should the Doctor Believe a Flowmeter? Henry Kister shares lessons learned from troubleshooting distillation towers 38 Feature Report A Primer on pH Measurement Understanding the basic principles of operation and construction designs of glass membrane sensors can help in choosing the right pH sensor 38 50 Environmental Manager Detecting and Preventing Spills and Leaks Comprehensive planning, along with appropriate level-measurement technologies and safety instrumented systems, can empower plant personnel to significantly reduce the likelihood and severity of hazardous chemical spills 12 5 Volume 129 | no. 5 CHEMICAL ENGINEERING WWW.CHEMENGONLINE.COM MAY 2022 1http://www.chemengonline.com http://WWW.CHEMENGONLINE.COM