www.chemengonline.com August 2022 Cover Story 26 Scrolling or Pushing? Choosing the Right Type of Filtration Centrifuge Understanding the working principles of scrolling and pushing centrifuges can help when deciding which type to use. Feed properties and other factors also play a role In the News 5 Chementator Hybrid membrane separates CO2 with both high permeability and selectivity; Biodegradable, cornbased adhesive is non-toxic, with tunable properties; A more sensitive way to differentiate chiral compounds; Commercial debut for sand-based energy storage; Upcycling of waste ABS into 3D-printable material with enhanced properties; and more 12 Business News Johnson Matthey to build U.K. gigafactory for H2 fuelcell components; Huntsman starts up MDI splitter in Geismar; BASF doubles its polymer dispersions capacity in Dahej, India; Ineos significantly expanding PAO production; and more 14 Newsfront Achieving Balance in Combustion New hardware combined with monitoring technologies can help optimize combustion now and in the carbon-conscious future Technical and Practical 23 Facts at your Fingertips Heat-Transfer Fluid System Venting This one-page reference provides information on addressing residual water and fluid degradation products in heat-transfer fluid systems 24 Tower Doctor X-raying the Patient: Gamma Scanning Vapor Cross-Flow Channeling Henry Kister shares lessons learned from troubleshooting distillation towers 31 Feature Report Ethernet-APL: The Future of Field Connectivity Ethernet Advanced Physical Layer (APL) provides connectivity between field-generated data and enterprise systems. Presented here is information on the design and operation of this rapidly expanding technology 38 Engineering Practice Magnetic-Drive PositiveDisplacement Pumps for Chemical Processing Applications Advances in sliding-vane and internal-gear seal-less pump technologies can provide many benefits when compared to centrifugal pumps or more well-known positive-displacement pump options CHEMICAL ENGINEERING WWW.CHEMENGONLINE.COM AUGUST 2022 1 31 5 26 Volume 129 | no. 8 38http://www.chemengonline.com http://www.chemengonline.com http://WWW.CHEMENGONLINE.COM