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Processing & Handling

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Precise degradation control is key to advanced bioresorbable polymers

Bioresorbable polymers — those that degrade naturally over time and can be absorbed by the body — are essential for delivering a number of advanced biomedical technologies to patients, including long-acting injectable or implanted products, regenerative scaffolds, degradable medical devices,…

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Closed-loop CO2-based energy-storage system slated for Wisconsin

Alliant Energy (Madison, Wis.; www.alliantenergy.com) was recently selected to receive a $30-million grant from the U.S. Dept. of Energy’s Office of Clean Energy Demonstrations (OCED; Washington, D.C.; www.energy.gov/oced) for a proposed 200-MWh energy storage system. Alliant Energy’s new battery system,…

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Using waste plastic to simultaneously make graphene and hydrogen

Building off of a process to efficiently manufacture graphene (see Chem. Eng., April 2022, p. 9), a team of researchers from Rice University (Houston, www.rice.edu) have uncovered that the process can be easily altered to also produce a nearly pure…

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Modular Construction Encourages New Applications

The efficiency and cost effectiveness of modularity provides advantages for small- and large-scale projects When the right conditions exist, the benefits of modular construction — from laboratory scale to large scale — are plentiful and allow single-source, cost-effective and efficient…

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Hydrogen Production via Methane Pyrolysis: An Overview of ‘Turquoise’ Hydrogen

‘Turquoise’ hydrogen processes generate H2 without releasing CO2. Presented here are the opportunities and challenges for producing hydrogen by methane pyrolysis Hydrogen-producing processes are classified using a color scheme according to their carbon footprint (Table 1; [1–3]). So-called “turquoise hydrogen”…

Unipar modernizes chlor-alkali plant in Brazil with thyssenkrupp nucera technology

Unipar (São Paulo, Brazil) is modernizing its chlor-alkali plant at the Cubatão plant in Brazil by incorporating electrolyzers from thyssenkrupp nucera AG & Co. KGaA (Dortmund, Germany; ). To modernize the plant, the Brazilian chemical company, a leader in the…

Taking graphene into the next dimension

Graphene has been touted as a “super” material, boasting ultra-high strength, superconductivity and many more superlative properties, but, as a planar two-dimensional material, its commercial use has been limited in terms of reactivity, since reactions can only occur at the…

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Methane Reforming: Solving the Hydrogen Blues

Improved catalysts and reconfigured reformer designs make steam-methane reforming the most scalable, industry-ready source of ‘blue’ H2 For many decades, steam-methane reforming (SMR) has been, and still is, the technology of choice for the large-scale production of synthesis gas (syngas;…

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A new electrolyzer system makes propane from CO2

Electrolyzers are typically associated with the production of “green” hydrogen from water and renewable electricity, but a new device borrows from traditional electrolyzer principles to convert CO2 into propane.  A team of researchers from the Electrochemical Energy Materials and Devices…

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Scaled up facility under construction for single-step, CO2-to-fuels process

Construction is underway by AIR Co. (Brooklyn, N.Y.; www.aircompany.com) for a commercial demonstration plant capable of converting captured carbon dioxide into fuel-grade paraffins, as well as ethanol and methanol, in a single step. The facility will be a larger version…