Separation Processes
New membranes for dehydrating organic solvents
Researchers at Asahi Kasei Corp. (Düsseldorf, Germany and Tokyo, Japan; www.asahi-kasei.com) are developing a membrane-based system that dehydrates organic solvents without heat or pressure. The system is targeting pharmaceutical-manufacturing applications, where organic solvents are commonly used in performing reactions, as…
Pilot plant planned for CO2 capture project using carbonate fuel cells
ExxonMobil affiliate Esso Nederland B.V. (Rotterdam, the Netherlands; www.esso.nl) is planning to build a pilot plant at its Rotterdam manufacturing complex to generate performance and operability data for a modular carbon-capture and storage (CCS) technology based on carbonate fuel cells…
This process makes freshwater from brine while capturing CO2
A new electrochemical technology for direct-air capture (DAC) of atmospheric CO2 can also produce freshwater from brackish water or brine waste from desalination or wastewater treatment facilities (diagram). The technology, developed by Capture6 (Berkeley, Calif.; www.capture6.org), splits the salt content…
Reducing CO2 emissions from pig iron production
Researchers of Karlsruhe Institute of Technology (KIT; Germany; www.kit.edu) and the SMS group GmbH (Düsseldorf, Germany; www.sms-group.com) have developed a new process to reduce CO2 emissions from worldwide steel production by several hundred million tons per year. It is based…
Recycle any type of magnet from end-of-life products
A new pilot plant is demonstrating a proprietary technology for recycling magnet materials from end-of-life (EOL) products, such as electric motors, automobile parts and hard-disk drives. Developed by Cyclic Materials Inc. (Toronto, Ont., Canada; www.cyclicmaterials.earth), the Mag-Xtract process is said…
Innovations in Pilot-Plant Distillation Process Design
Small-scale distillation processes have specific concerns that are different than commercial-scale distillation. Presented here are several topics, including column internals and column-sizing software, considered from the perspective of pilot-scale distillation The design and operation of laboratory- and pilot-scale columns are…
A continuous electrochemical process for direct-air CO2 removal
Direct-air capture (DAC) of atmospheric carbon dioxide presents promise for helping to reach global-warming reduction goals. However, many DAC technologies are hindered by high costs and inefficiency. RepAir Carbon (Yokne-am Illit, Israel; www.repair-carbon.com) recently launched a field prototype of its…
Converting natural gas to alcohols using MOFs
Capturing natural gas from petroleum drilling wells is economically challenging, but would have positive environmental impacts because it would eliminate the need for flaring and could allow the hydrocarbons to be converted into useful chemicals. Now, research led by chemists…
Direct molten-salt electroplating cuts battery costs
The extremely high material purity demanded for conventional lithium-ion battery manufacturing creates considerable costs for transporting and refining lithium and other raw materials. Through the development of a single-step electroplating process that uses lower-purity raw materials and a nanostructured-foam electrode…
First commercial DAC facility in the U.S. captures CO2 for concrete
In November 2023, Heirloom Carbon Technologies (Tracy, Calif.; www.heirloomcarbon.com) unveiled the United States’ first commercial direct air capture (DAC) facility, which can capture up to 1,000 ton/yr of CO2. The process first uses renewable energy to remove CO2 from limestone…