Chemical Engineering
Bulk-Solids Storage and Flow: Silos and Stockpiles
This article provides guidance on the selection and sizing of silos and stockpiles in bulk-solids-handling operations, and clarifies misconceptions surrounding gravity-reclaim storage systems for bulk-solids materials Gravity-reclaim systems for bulk-solids handling rely solely on gravity to withdraw material from storage…
Alignment on worker chemical safety
In the U.S., worker chemical safety is a key concern at a wide range of industrial facilities. The current regulatory framework for worker chemical safety is overseen by two federal agencies: traditionally, by the Occupational Safety and Health Administration (OSHA;…
Refinery-grade crude oils can be made from biogenic waste using this technology
A pre-commercial plant is now providing operational data for eventual scaleup and industrial integration of a technology that generates refinery-grade crude oils from biogenic waste, such as agricultural and forestry waste and sewage sludge. The 12-ton/d demonstration plant (photo), built…
New electrochemical route to critical chemicals is scaling up with significant industrial support
A new electrochemical process developed by French-American startup firm Dioxycle (Paris, France; Menlo Park, Calif.; www.dioxycle.com) produces critical chemicals from industrial by-products and electricity, independent from fossil-fuel imports. Recently, the company announced the deployment of their platform for the conversion…
Printable gel electrolytes support bespoke battery architectures
Unlike conventional liquid electrolytes used in lithium-ion batteries, gel polymer electrolytes (GPEs) are immobilized within a polymer network, which reduces leakage risks, thereby improving mechanical and thermal stability. However, current methods for GPE fabrication result only in two-dimensional planar films,…
Eco-friendly method for making MOF-encapsulated enzymes expands possibilities
Enzyme-based biocatalysts are a key aspect of industrial green-chemistry initiatives, but they often don’t have the required stability to perform in industrial settings. A strategy for allowing enzymes to function longer and under harsher conditions has been to encapsulate them…
Electro-extraction technique unlocks copper in waste streams
Initiatives to increase electrification and build digital infrastructure for artificial intelligence are among the trends increasing demand for copper (and other critical materials), prompting efforts to identify new sources of the metal. The startup company SiTration (Watertown, Mass.; www.sitration.com), a…
A more straightforward condensation route from bioethanol to linear alcohols
Linear alcohols, such as butanol, hexanol and octanol are widely used in coatings, adhesives, surfactants, detergents, lubricants, cosmetics and many other products, as well as fuels. Typical industrial methods for producing these alcohols rely on fossil resources and low-selectivity mechanisms…
Alkaline thermal process generates hydrogen fuel from mixed plastic waste
A team of researchers from the Ewha Women’s University (Seoul, South Korea; www.ewha.ac.kr) and the University of California at Los Angeles (UCLA; www.ucla.edu) have taken a step toward addressing one of the main challenges in plastics recycling — economically processing…
SLB to acquire thermal management firm Kelvion for around $3.4 billion
SLB N.V. (Houston, Tex.) announced it has signed an agreement to acquire Kelvion Holding GmbH (Herne, Germany), a global provider of thermal management and heat exchange technologies. The acquisition strengthens SLB's Data Center Solutions business with critical thermal management technologies…