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Chemical Recycling is Essential for Plastics Circularity, but Faces Challenges

Environmental imperatives drive the development of technologies for the chemical recycling of plastic waste, but significant hurdles – including economic viability, collection logistics and feedstock complexity – need to be addressed for chemical recycling to have a larger impact Plastic…

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Rotary Valves Can Prevent Stem Seal Woes

Consider the potential for stem seal leakage when selecting a valve Experienced process control engineers follow familiar, time-tested steps when presented with a new system to design and specify. Selecting a control valve for a process always requires the same…

Facts At Your Fingertips: Milling for Particle Size Control

Milling is commonly used for particle-size reduction and control of particle-size distribution (PSD) for crystalline solids. Mills are effective for generating consistent solids properties, through size reduction and surface-modification mechanisms [1]. This one-page reference outlines the mechanical forces involved in…

AI-Powered Search Improves Knowledge Transfer at Agricultural Chemicals Site

An artificial intelligence (AI)-based search tool allowed workers to quickly mine historical data to improve operations and respond to emerging problems At the Bayer Crop Science facility in Muttenz, Switzerland, managers and workers wanted to improve communication during shift handovers…

Innovations in ‘green’ chemistry

Striving to make products and processes safer, more efficient, more sustainable, more economical and more environmentally friendly has long been the goal of research and applied scientists and engineers. For the past 28 years, new and innovative “green” chemistry technologies…

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A low-cost method for bio-based production of acrylic acid

Acrylic acid, a commodity chemical used widely in superabsorbent polymers, paints, coatings, adhesives and more, is typically produced from fossil-based propylene at relatively high temperatures. As part of an initiative supported by the U.S. Dept. of Defense, funding was recently…

Coriolis Flowmeters: Insights for Selection and Upgrade

Coriolis mass flowmeters are available with a range of body styles and transmitters, enabling significant functionality improvements without sensor replacement Coriolis meters have long been a mainstay in the chemical process industries (CPI), providing highly accurate mass-flow measurements for raw-material…

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“Frugal” method adsorbs and destroys PFAS with photocatalyst

Removing per- and polyfluoralkyl substances (PFAS) from surface and groundwater has become an environmental and public health imperative, but methods for doing so are often complicated and costly, and may not destroy the molecules. Researchers at the University of British…

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Destroy PFAS while also producing syngas

The destruction of per- and polyfluoroalkyl substances (PFAS) presents unique issues in wastewater treatment, as these substances are persistent in many treatment environments, and PFAS-laden purification media is challenging to dispose of. Now, InEnTec Inc. (Richland, Wash.; www.inentec.com) says that…

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Chementator Briefs – Technology News for Nov. 2024

Electrifying industrial heat Calectra (Oakland, Calif.; www.calectra.com) has received $1.6 million in pre-seed funding and $400,000 in grant funding from the U.S. Government and New York State to support its work on decarbonizing industrial process heat. Heavy industrial processes, like…