www.chemengonline.com September 2023 Cover Story 22 Optimizing Fluidized-Bed Drying Processes Modern control technologies and industrial automation strategies can help processors use fluidized-bed dryers to drive competitiveness and profitability 27 Rotary Drum Maintenance Follow these nine recommendations to establish a strong program for preventive maintenance of rotary drums in drying, cooling and other treatments of bulk solids In the News 5 Chementator Direct air capture of CO2 via a liquid-based, lowtemperature thermochemical system; This electrolysis cell produces high-purity iron; 'Printing' new catalyst candidates onto a chip; A new approach to refrigeration with no global warming potential; Making ammonia with microwaves; and more 22 11 Business News Mitsui Chemicals to increase production capacity for polyurethane dispersions; Covestro starts up new elastomers plant in Shanghai; Sika expands production capacities for macro-fibers at Tennessee plant; Ineos and Sinopec complete formation of petrochemicals joint venture; and more 13 Newsfront The Changing Face of Water Treatment Modern solutions help processors achieve water-related goals in a more proactive, cost-effective way Technical and Practical 21 Facts at your Fingertips Plant Cybersecurity Awareness This one-page reference provides information on cybersecurity threats, as well as defense and response strategies 32 Feature Report Treating Wastewater in Bioprocessing Facilities Bioprocessing facilities can achieve compliance, prevent downstream contamination and increase water reuse by using advanced oxidation processes 37 Engineering Practice Advances in Chlor-Alkali Technologies The products of the chlor-alkali process continue to be essential for many purposes across the global value chain. Modern chlorialkali technologies can vastly improve upon the safety and environmental performance of legacy systems 13 27 Volume 130 | no. 9 32 CHEMICAL ENGINEERING WWW.CHEMENGONLINE.COM SEPTEMBER 2023 1http://www.chemengonline.com http://WWW.CHEMENGONLINE.COM