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Editor’s page: Welcome to Chemical Engineering
This month’s column gives a brief overview of the Chemical Engineering brand. While long-term readers need no introduction to the magazine, newer readers might be interested in the history of the magazine and what we cover. Perhaps even long-term readers…
Facts At Your Fingertips: Battery Chemistries for Stationary Energy Storage
Storing energy to smooth the intermittency of wind and solar power can be accomplished in a number of ways, including mechanical (pumped hydro, flywheels, compressed air and others), thermochemical (phase-change materials and molten salts, for example), chemical (conversion of electricity…
This process can fully mineralize PFAS with no toxic byproducts
Breaking the stable carbon-fluorine bonds within per- and polyfluoroalkyl substances (PFAS) is one of the most significant challenges in mitigating persistent PFAS pollution. The Hydrothermal Alkaline Technology (HALT; diagram), invented at the Colorado School of Mines (Golden, Colo.; www.mines.edu) and…
Process Analytical Technology and the Role of Raman Spectroscopy
Process analytical technology (PAT) approaches allow continuous monitoring and real-time control of processes. Among the key monitoring technologies is Raman spectroscopy, which offers inline measurement that can reduce personnel time and sampling complexity The chemical industry faces new challenges with…
Air Classification of Powdered Materials
Air classification of powdered materials offers a way to control particle size distribution in solids-handling operations. Information on key performance metrics and operating practices of size classification equipment is presented here The handling and processing of solid particulate materials are…
Valves for use in Sanitary Processes and High-Purity Applications
Sanitary valves are essential for applications that demand product purity, process integrity and regulatory compliance. This article discusses valve types, working principles and components, and provides considerations for selection and specification Sanitary valves are essential components for applications in the…
World’s first grid-connected iron-air battery now operational in the Netherlands
The Netherlands-based startup company Ore Energy (Amsterdam, the Netherlands; www.oreenergy.com) recently announced that it has successfully connected its flagship iron-air battery system to the electric grid in the city of Delft, the Netherlands. It is the first iron-air battery system…
Novel reactor addresses limitations of pyrolysis for plastics recycling
Pyrolysis has received much attention as a technology capable of breaking down waste plastics in recycling processes, but existing pyrolysis approaches often give rise to products with broad molar mass distributions and poor yields. Catalysts can improve yield and selectivity,…
New reactor supports organic-assisted electrolysis for green hydrogen
The production of “green” hydrogen via electrolysis is seen as a key decarbonization pathway for certain industry sectors, but its efficiency can be hampered by a number of factors, including the accumulation of gas bubbles on electrode surfaces within electrolyzers…
Carbon dioxide removal combined with desalination
Most existing carbon-dioxide removal (CDR) approaches have focused on air, but the volumetric concentration of dissolved inorganic CO2 in surface water is much higher (150X) than its concentration in the atmosphere. Removing CO2 from water could prove to be a…