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Chemical Engineering

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Short-loop battery recycling uses vegetable-oil nanoemulsion

Efficient and sustainable recycling of lithium-ion batteries is a crucial element in electrifying transportation. Black mass is a mixture of cathode and anode materials remaining after disassembly and shredding of end-of-life lithium-ion batteries (LIBs). Many valuable materials, including lithium and…

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An integrated process makes valuable mid-chain carboxylic acids from organic waste

A dual process strategy bridging fermentation and electrochemistry is enabling the production of mid-chain carboxylic acids (MCCAs) — important and valuable precursors to a number of products — using inexpensive organic waste streams from breweries, distilleries and dairies. Developed by…

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Selective silica removal makes for better bauxite beneficiation

The extraction of alumina from bauxite is significantly impacted by the silica content of the ore — specifically the presence of silica in kaolinite (Al2Si2O5(OH)4). This is because traditional bauxite-beneficiation methods, such as washing, flotation and particle-size separation, also typically…

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Seawater-derived solids can serve as carbon-negative components of concrete

Aggregate — solid materials like sand, gravel and crushed stone — is combined with cement to make concrete, the world’s most widely used human-made material. But sand is in short supply, so there is a need for alternate materials to…

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New production facility for high-purity graphene announced in Texas

A new facility in Texas to manufacture high-purity graphene powder from acetylene has been announced by HydroGraph Clean Power Inc. (Vancouver, B.C.; www.hydrograph.com). At capacity, the facility will generate thousands of metric tons per year of sp2-bonded powdered graphene with…

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Pilot planned for electrochemical extraction of REEs and other critical metals

Construction is planned for a pilot plant that will demonstrate a modular electrochemical technology for extracting rare-earth elements (REEs) and nickel from industrial wastes, such as coal ash. The startup Blueshift (Boston, Mass.; www.buildblueshift.com) recently announced venture capital funds that…

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SAFs from multiple feedstocks at lower cost

A pilot project completed at the end of last year demonstrated the ability of a technology to convert a range of feedstocks into sustainable aviation fuel (SAF) at lower cost than current ethanol-to-jet (ETJ) processes. Universal Fuel Technologies (UniFuel; Los…

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Facts At Your Fingertips: Valve Actuator Types

Actuators are attached to the control mechanism of a valve to replace a manual lever or handle, and they control the position of a valve (open, closed or specific position) remotely and automatically. In industrial applications, numerous types of actuators…

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Differences of Temperature-control Devices: Heat Exchangers, Coolers and Heaters

Understanding the differences among key temperature-control devices, such as heaters, coolers and heat exchangers, allows users to realize their unique benefits When it comes to temperature control in industrial, commercial and residential settings, three key devices are often considered: heat…

SUEZ commissions one of China’s largest desalination plants

SUEZ (Paris, France) has commissioned China’s largest industrial membrane-based seawater desalination plant for Wanhua Chemical’s Penglai Industrial Park to support industrial needs while conserving scarce water resources A landmark seawater desalination plant, designed and built by SUEZ for Wanhua Chemical…