Chemical Engineering
Pneumatic Conveying Basics
Pneumatic conveying is a versatile method for transporting powders and other solid materials within chemical process plants. Success depends on understanding science and applying specific experience Undergraduate engineering programs include little instruction about powder handling. While there may be some…
A customized catalyst for solid-state reactions
Chemists at Hokkaido University (Sapporo, Hokkaido, Japan; www.global.hokudai.ac.jp) and the Institute for Chemical Reaction Design and Discovery have developed what is said to be the first high-performance catalyst specifically designed and optimized for solid-state, mechanochemical synthesis. The new approach was…
What Manufacturing Sites Can Learn from Municipalities About Water Loss
Accurate water-monitoring technologies support short- and long-term sustainability goals in both municipalities and the industrial sector In recent years, São Paulo, Cape Town and other major world cities have come dangerously close to running out of water, and the criticality…
Decarbonizing cement production using solar-thermal energy
Last month, the U.S. Dept. of Energy (DOE; Washington, D.C.; www.energy.gov) awarded $3.2 million in funding for the Solar MEAD project, which aims to decarbonize cement production. This joint project is headed by Cemex, S.A.B. de C.V. (Cemex; Monterrey, Mexico;…
Chementator Briefs
P-XYLENE FROM CO2 Last month, a Japanese consortium announced the successful production and purification of p-xylene produced from CO2 at pilot scale. The University of Toyama (www.u-toyama.ac.jp), Chiyoda Corp. (www.chiyodacorp.com) and HighChem Co., Ltd. (www.highchem.co.jp) have been collaborating on producing…
A new milestone for durable fuel-cell membranes
For the first time, a hydrocarbon-based membrane has passed the performance and durability testing standards set by the U.S. Dept. of Energy (DOE; Washington, D.C.; www.energy.gov) for heavy-duty fuel-cell applications. Typically, membranes in fuel cells are made of perfluorinated materials…
Converting waste polyolefins to isoalkanes
Chemical recycling of waste polyolefins is difficult to achieve economically partly because of the stability of carbon-carbon bonds in the plastics. In a new approach, researchers at Pacific Northwest National Laboratory (PNNL; Richland, Wash.; www.pnnl.gov) and the Technical University of…
Electrolysis of seawater — without pre-treatment
Current electrolyzers for producing hydrogen use purified water as feedstock, but in the future, this could exacerbate freshwater shortages in some areas. Seawater is highly abundant, but the ions it contains undergo electrode side reactions, and cause corrosion in proton-exchange…
Quinones power this flow battery
A new flow-battery design is based on quinones — a plentiful material historically derived from coal tar and used in dyestuff manufacturing — rather than traditional battery electrolytes. “Our feedstocks use no critical materials like lithium, cobalt or nickel, and…
Plant Watch: April 2023
Plant Watch Evonik to expand methionine production capacity in Singapore March 9, 2023 — Evonik Industries AG (Essen, Germany; www.evonik.com) is expanding its capacity to produce DL-methionine on Jurong Island, Singapore, by 40,000 metric tons per year (m.t./yr). Following the…